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USNDP

10B (1984AJ01)


(See Energy Level Diagrams for 10B)

GENERAL: See also (1979AJ01) and Table 10.5 [Table of Energy Levels] (in PDF or PS).

Shell and deformed models: (1978FU13, 1979FL06, 1979KU05, 1980NI1F, 1981BO1Y, 1981DE2G, 1982BA52).

Cluster and α-particle models: (1979AD1A, 1980FU1G, 1980NI1F, 1980OK1B, 1981KR1J, 1983RO1G).

Special states: (1979FL06, 1980BR21, 1980FU1G, 1980NI1F, 1980OK1B, 1980RI06, 1981BA64, 1981BO1Y, 1981DE2G, 1981KU04, 1981SE06, 1982BA52, 1983GO1R).

Electromagnetic tranisitions and giant resonances: (1978FU13, 1979FL06, 1979KU05, 1980KO1L, 1980NI1F, 1980RI06, 1981BA64, 1981BO1Y, 1981KN06, 1982BA52, 1982RI04, 1982VE11).

Astrophysical questions: (1978BU1B, 1979MO04, 1979RA1C, 1980RE1B, 1981AU1D, 1981AU1G, 1981GU1D).

Applied work: (1979AT01, 1979FL1A, 1979FO1F, 1979JU1B, 1980MU1D, 1983ST1H).

Complex reactions involving 10B: (1978BH03, 1978HE1C, 1979AL22, 1979BO22, 1979JA1C, 1979LO11, 1979SA27, 1979ST1D, 1979VI05, 1980GR10, 1980GU1E, 1980MI01, 1980OL1C, 1980RI06, 1980WI1L, 1981BL1G, 1981ME13, 1981MO20, 1981TA22, 1981VA1D, 1982CH1M, 1982FU04, 1982GO1E, 1982LU01, 1982LY1A, 1982MO1K, 1982VE11, 1983BE02, 1983SA06).

Muon and neutrino capture and reactions: (1979BE1N, 1979DE01, 1979GO1M, 1980MU1B, 1981GI08, 1981MU1E, 1981OL01, 1982NA01).

Pion and kaon capture and reactions (See also reactions 23, 24 and 47.): (1978AN20, 1978DA1A, 1978TS1A, 1979AL1J, 1979AL21, 1979BA16, 1979BE1N, 1979BO1P, 1979BO1N, 1979PI06, 1979TI1A, 1979TR1B, 1980CR03, 1980DE11, 1980LE02, 1980MA1F, 1980NA1B, 1980ST25, 1981BE63, 1981FR17, 1981GE1B, 1981GI15, 1981SI1D, 1981ST05, 1981YA1A, 1982RO04).

Hypernuclei: (1978DA1A, 1978PO1A, 1978SO1A, 1980IW1A, 1981WA1J, 1982ER1E, 1982KO11, 1982RA1L).

Other topics: (1980BR21, 1981AV02, 1981KU04, 1981SE06, 1982BA2G, 1982CH1M, 1982DE1N, 1982NG01, 1982VE02, 1983GO1R).

Ground-state properties of 10B: (1978HE1D, 1979BE1N, 1979SA27, 1980FU1G, 1981AV02, 1981BO1Y, 1981OL01, 1981SE06, 1982BA2G, 1982LO13, 1982NG01).

μ = +1.80065 ± 0.00001 nm: see (1978LEZA).

Q = +84.72 ± 0.56 mb: see (1978LEZA).

Mass of 10B: A.H. Wapstra (private communication) adopts 12050.0 ± 0.39 keV and we shall too. See also (1983CH08).

10B*(0.72): μ = +0.63 ± 0.12 nm: see (1978LEZA). See also (1982VE11).

1. 6Li(α, γ)10B Qm = 4.4603

Observed resonances are displayed in Table 10.8 (in PDF or PS). See also (1981GA1A, 1981MU1F).

2. (a) 6Li(α, n)9B Qm = -3.977 Eb = 4.4603
(b) 6Li(α, p)9Be Qm = -2.1262
(c) 6Li(α, d)8Be Qm = -1.5671

The excitation functions for neutrons [from threshold to Eα = 15.5 MeV] and for deuterons [Eα = 9.5 to 25 MeV; d0, d1 over most of range] do not show resonance structure. See also 9B, 9Be and 8Be. For reaction (a) see also (1979BA48). See (1979AJ01) for references.

3. (a) 6Li(α, α)6Li Eb = 4.4603
(b) 6Li(α, 2α)2H Qm = -1.4753

Excitation functions of α0 and α1 have been reported for Eα ≤ 18.0 MeV and 9.5 to 12.5 MeV, respectively: see (1974AJ01). Reported anomalies are displayed in Table 10.9 (in PDF or PS). Elastic scattering and VAP measurements are reported for Ed-bar = 15.1 to 22.7 MeV (1979EG01). Small anomalies are observed in the excitation function of the magnitude parameter (reaction (b)) corresponding to 10B*(8.67, 9.65, 10.32, 11.65) (1983GO07). See, however, Table 10.5 (in PDF or PS). See also 6Li, (1980SK1A) and (1979NO1C, 1979SU09, 1979SU1F, 1980FU1G, 1982LE10, 1983SH04; theor.).

4. 6Li(6Li, d)10B Qm = 2.985

Angular distributions of deuteron groups have been determined at E(6Li) = 2.4 to 9.0 MeV (d0, d1, d3) and 7.35 and 9.0 MeV (d4, d5). The d2 group is also observed but its intensity is weak: see (1974AJ01) and 12C in (1980AJ01). See also (1979WA13).

5. 6Li(7Li, t)10B Qm = 1.992

Angular distributions of the t0 and t1 groups have been measured at E(6Li) = 3.3 MeV and E(7Li) = 3.78 to 5.95 MeV: see (1974AJ01).

6. 7Li(3He, γ)10B Qm = 17.7880

Capture γ-rays have been observed for E(3He) = 0.8 to 6.0 MeV. The γ0 and γ5 yields [to 10B*(0, 4.77)] show resonances at E(3He) = 1.1 and 2.2 MeV [Eres = 0.92 and 2.1 MeV], the γ1 and γ4 yields [to 10B*(0.72, 3.59)] at 1.4 MeV and the γ4 yield at 3.4 MeV: see Table 10.10 (in PDF or PS). Both the 1.1 and 2.2 MeV resonances [10B*(18.4, 19.3)] appear to result from s-wave capture; the subsequent decay is to two 3+ states [10B*(0, 4.77)]. Therefore the most likely assignment is 2-, T = 1 for both [there appears to be no decay of these states via α2 to 6Li*(3.56) which has Jπ = 0+, T = 1: see reaction 10]. The assignment for 10B*(18.8) [1.4 MeV resonance] is 1+ or 2+ but there apprears to be α2 decay and therefore Jπ = 2+. 10B*(20.2) [3.4 MeV resonance] has an isotropic angular distribution of γ4 and therefore Jπ = 0+, 1-, 2-. The γ2 group resonates at this energy which eliminates 2-, and 0+ is eliminated on the basis of the strength of the transition which is too large for E2. See (1974AJ01) for references.

7. 7Li(3He, n)9B Qm = 9.351 Eb = 17.7880

The excitation curve is smooth up to E(3He) = 1.8 MeV and the n0 yield shows resonance behavior at E(3He) = 2.2 and 3.25 MeV, Γlab = 270 ± 30 and 500 ± 100 keV. No other resonances are observed up to E(3He) = 5.5 MeV. See Table 10.10 (in PDF or PS) and (1974AJ01) for references.

8. 7Li(3He, p)9Be Qm = 11.2015 Eb = 17.7880

The yield of protons has been measured for E(3He) = 0.60 to 4.8 MeV: there is some indication of weak maxima at 1.1, 2.3 and 3.3 MeV. Polarization measurements are reported at E(3He) = 14 MeV, and more recently at E(3He) = 13.6 - 13.7 MeV (1981SL03) and 14.01 MeV (1983RI01). See also (1981VI1B). For the earlier references see (1974AJ01, 1979AJ01).

9. (a) 7Li(3He, d)8Be Qm = 11.7606 Eb = 17.7880
(b) 7Li(3He, t)7Be Qm = -0.881
(c) 7Li(3He, 3He)7Li

Yields of deuterons have been measured for E(3He) = 1.0 to 2.5 MeV (d0) and yields of tritons are reported for 2.0 to 4.2 MeV (t0): a broad peak is reported at E(3He) ≈ 3.5 MeV in the t0 yield. See (1979AJ01) for references. Polarization measurements are reported at E(pol. 3He) = 33.3 MeV for the deuteron groups to 8Be*(16.63, 17.64, 18.15) (1981BA38) and for the triton and 3He groups to 7Be*(0, 0.43) and 7Li*(0, 0.48, 4.63) (1981BA37). See also (1979KA1G).

10. 7Li(3He, α)6Li Qm = 13.328 Eb = 17.7880

Excitation functions have been measured for E(3He) = 1.3 to 18.0 MeV: see (1974AJ01). The α0 group (at 8°) shows a broad maximum at ≈ 2 MeV, a minimum at 3 MeV, followed by a steep rise which flattens off between E(3He) = 4.5 and 5.5 MeV. Integrated α0 and α1 yields rise monotonically to 4 MeV and then tend to decrease. Angular distributions give evidence of the resonances at E(3He) = 1.4 and 2.1 MeV seen in 7Li(3He, γ)10B: Jπ = 2+ or 1-, T = (1) for both [see, however, reaction 6]: Γα is small. The α2 yield [to 6Li*(3.56), Jπ = 0+, T = 1] shows some structure at E(3He) = 1.4 MeV and a broad maximum at ≈ 3.3 MeV: see Table 10.10 (in PDF or PS). Recent (unpublished) excitation studies have been reported at E(3He) = 0.6 to 2.5 MeV for the α0, α1, α2 and α4 groups: the α4 group shows possible resonances at E(3He) = 1.45 and 2.15 MeV. Jπ = 2+; T = 1 is suggested for the lower structure (1979LI1B, 1980LI1F). Polarization measurements are reported at E(pol. 3He) = 33.3 MeV to 6Li*(0, 2.19, 3.56) (1981BA38).

11. 7Li(α, n)10B Qm = -2.7898

Angular distributions have been measured for Eα = 4.78 to 13.9 MeV [see (1974AJ01)] and more recently for Eα = 4.4 to 5.1 MeV (1981SE04). See also (1979AJ01).

12. 9Be(p, γ)10B Qm = 6.5865

Parameters of observed resonances are listed in Tables 10.11 (in PDF or PS) and 10.12 (in PDF or PS). Table 10.6 (in PDF or PS) summarizes the γ-transitions from this and other reactions. For references to the discussion below, see (1974AJ01, 1979AJ01).

The Ep = 0.32 MeV resonance (10B* = 6.87 MeV) is ascribed to s-wave protons because of its comparitively large proton width [see 9Be(p, p)] and because of the isotropy of the γ-radiation. The strong transition to 10B*(1.74) requires E1 and hence Jπ = 1-, T = 0. T = 0 is also indicated by the large deuteron width. On the other hand, the strength of E1 transitions to 10B*(0.7, 2.1) indicates T = 1. The amplitudes for the T = 0 and T = 1 parts of the wave function for 10B*(6.87) are 0.92 and 0.39, respectively. See (1982RI04) for the 5.16 → 1.74 decay (Table 10.6 (in PDF or PS)).

The proton-capture data near Ep = 1 MeV appears to require at least five resonant states, at Ep = 938, (980), 992, 1083 and 1290 keV. The narrow Ep = 1083 keV level (10B*=7.56 MeV) is formed by p-wave protons, Jπ = 0+ [see 9Be(p, p), 9Be(p, α)]. The isotropy of the γ-rays supports this assignment. The strong M1 transitions to Jπ = 1+; T = 0 levels at 0.72, 2.15 and 5.18 MeV (Table 10.12 (in PDF or PS)) indicate T = 1. The width of 10B*(5.18) observed in the decay is 100 ± 10 keV.

The excitation function for the ground-state radiation shows resonance at Ep = 992 (Γ = 80 keV) and 1290 keV (Γ = 230 keV). Elastic scattering studies indicate s-wave formation and Jπ = 2- for both. For the lower level (Ex = 7.48 MeV) the intensity of the g.s. capture radiation, Γγ = 25 eV indicates E1 and T = 1. The angular distribution of γ-rays, 1 + 0.1sin2θ, is consistent with s-wave formation with some d-wave admixture or with some contribution from a nearby p-wave resonance; possibly a Jπ = 2+ level at Ep = 980 keV.

The angular distribution of ground-state radiation at Ep = 1330 keV is isotropic and Γγ = 8.5 eV, supporting E1, T = 1 for this level (Ex = 7.75 MeV).

Transitions to 10B*(0.7) [γ1] show resonances at Ep = 992, 1290 and 938 keV, Γ = 155 keV. The latter is presumably also a resonance for (p, d) and (p, α). An assignment of Jπ = 2-, T = 0 is consistent with the data, although the E1 radiation then seems somewhat too strong for a ΔT = 0 transition.

A resonance for capture radiation at Ep = 2.567 ± 0.003 (Ex = 8.895 MeV) has a width of 40 ± 2 keV and decays mainly via 10B*(0.7) (unpublished Ph.D. thesis). It appears from the width that this resonance corresponds to that observed in 9Be(p, α), Jπ = 2+, T = 1 and not to the 9Be(p, n) resonance at the same energy. A further resonance is reported at Ep = 4.72 ± 0.01 MeV, Γ ≈ 0.5 MeV.

In the range Ep = 4 to 18 MeV, the γ0 yield at 90° shows the resonance at Ep = 4.7 MeV (Ex = 10.7 MeV) and shows fluctuations suggesting states at Ex ≈ 14.6, 15.6 and 19.7 MeV. It is suggested that 10B*(19.7) decays via E1 and therefore Jπ = 2-, 3-, 4-. The other three states presumably decay by M1 and therefore Jπ = 2+, 3+, 4+. These fluctuations appear on a nearly constant γ0 yield with a 90° differential cross section ≈ 1.5 μb/sr. The average yield of γ1 is ≈ 2/3 of the γ0 yield. The broad giant resonance peak is centered at Ex ≈ 14.5 MeV. Fluctuations in the γ1 yield are reported at Ex ≈ 12.6, 13.3 and 14.1 MeV. These states presumably decay by M1 to 10B*(0.7) [Jπ = 1+] and therefor Jπi = 0+, 1+, 2+. The weak γ2 yield (to 10B*(1.74) [Jπ; T = 0+; 1]) seems to exhibit a broad peak centered near Ex = 15 MeV (maximum 90° differential cross section ≈ 0.5 μb/sr) and possibly some structure near Ex = 20 MeV. The γ3 yield (to 10B*(2.15) [Jπ = 1+]) increases to ≈ 0.4 μb/sr at Ex ≈ 16 MeV and seems to remain constant beyond that energy, with some suggestion of a fluctuation corresponding to Ex ≈ 12.9 MeV. 10B*(12.9) appears to have positive parity. Angular distributions of γ0, γ1, γ2 and γ3 are also reported (unpublished Ph.D. thesis).

The magnetic moment of 10B*(0.72) has been studied via γ-γ correlations from 10B*(7.56): g = +0.63 ± 0.12.

13. 9Be(p, n)9B Qm = -1.851 Eb = 6.5865

Resonances in the neutron yield occur at Ep = 2562 ± 6, 4720 ± 10 and, possibly, at 3500 keV with Γc.m. = 84 ± 7, ≈ 500 and ≈ 700 keV. These three resonances correspond to 10B*(8.891, 10.83, 9.7): see Table 10.13 (in PDF or PS) in (1974AJ01). Cross-section measurements for the (p, n) and (p, n0) reactions have been obtained by (1983BY01; Ep = 8.15 to 15.68 MeV) [see also for a review of earlier work]. They indicate possible structure in 10B near 13 - 14 MeV (1983BY01).

The Ep = 2.56 MeV resonances is considerably broader than that observed at the same energy in 9Be(p, α) and 9Be(p, γ) and the two resonances are believed to be distinct. The shape of the resonance and the magnitude of the cross section an be accounted for with Jπ = 3- or 3+; the former assignment is in better accord with 10Be*(7.37). For Jπ = 3-, θ2n = 0.135, θ2p = 0.115 (R = 4.47 fm): see (1974AJ01).

The analyzing power for n0 has been measured for Epol. p = 2.7 to 17 MeV (1980MA33, 1981BY1B, 1981BY1C, 1981MU1D), as has Py near 8.1 MeV. See also (1983BY01). The polarization transfer coefficient has been studied for Epol. p = 3.9 to 15.1 MeV by (1976LI08): negative values of Ky'y(0) are reported near Ep = 7 MeV in a region where several states are known to exist in 10B; a spin-flip mechanism may also be involved. Polarization measurements are also reported at Epol. p = 135 MeV (1981MA1J) and 800 MeV (1981RI06). See also 9B, (1979AJ01), (1979BA68), (1980WA1K, 1981WA1G, 1982BY1A) and (1978BA1F, 1981UL1B; applications).

14. (a) 9Be(p, p)9Be Eb = 6.5865
(b) 9Be(p, pn)8Be Qm = -1.6655

The elastic scattering has been studied for Ep = 0.2 to 9.5 MeV [see (1974AJ01, 1979AJ01)] and (1980BO1L; Ep = 2.31 → 2.73 MeV; p0). Below Ep = 0.7 MeV only s-waves are present exhibiting resonance at Ep = 330 keV [10B*(6.88)], Jπ = 1-. Between Ep = 0.8 to 1.6 MeV polarization and cross-section measurements are well fitted by a phase-shift analysis, using only the 3S1, 5S2, 5P1 and 5P2 phases. Four levels satisfy the data, 1+ and 2- states at Ex = 7.48 MeV, a sharp 0+ state at Ex = 7.56 MeV, and a 1- state at 7.82 MeV: see Table 10.13 (in PDF or PS). Pronounced minima at Ep = 2.48 and 2.55 are observed in the polarization (p0): these are ascribed to T = 1 analogs of the 3- and 2+ states 10Be*(7.37, 7.52). A strong anomaly is observed at Ep = 6.7 MeV: see Table 10.13 (in PDF or PS).

Polarization measurements have been reported at Ep = 0.9 to 49.8 MeV, at 138.2 and 145 MeV, and at 990 MeV [see (1974AJ01, 1979AJ01)] and at Epol. p = 780 MeV (1982RA20) as well as at 1 GeV (1983BE16). See also 9Be. Ay and Kyy have been measured at Epol. p = 225 MeV (1981RO1M; p0). Total reaction cross sections have been measured at eight energies in the range Ep = 225 to 557 MeV (1979SC07. Inclusive cross sections have been measured by (1979FR12, 1979KO21, 1980NI09). Polarization transfer parameters have been measured at Ep = 800 MeV (1981RI06). Hadron multiple production has been studied by (1978AR1J). For pion and kaon production at 400 GeV see (1980NI09). For reaction (b) see 9Be and (1982PE1F). See also (1981BA1R, 1981CO1D, 1981NA05, 1981WA1G, 1982BA2T, 1983SEZW), (1983LE28; astrophysics) and (1978BH1B, 1979BY01, 1979WE1C, 1981BO1C, 1981KR17, 1983BY01; theor.).

15. (a) 9Be(p, t)7Be Qm = -12.082 Eb = 6.5865
(b) 9Be(p, 3He)7Li Qm = -11.201

Polarization measurements (reaction (b)) are reported at Epol. p = 23.06 MeV (1983RI01). See also (1979AR04, 1981BA1R, 1981SL03, 1983SEZW).

16. (a) 9Be(p, d)8Be Qm = 0.5591 Eb = 6.5865
(b) 9Be(p, α)6Li Qm = 2.126

Knowledge of the cross sections of these two reactions at low energies is of importance for power generation and astrophysical considerations. Absolute cross sections for the d0 and α0 groups have been measured for Ep = 28 to 697 keV with ± 5 - 6% uncertainty. The value of Sc.m.(E = 0) for the combined cross sections is estimated to be 35+45-15 MeV · b. At the 0.33 MeV resonance (Jπ = 1-), σα0 = 360 ± 20 mb and σd0 = 470 ± 30 mb. The data (including angular distributions), analyzed by an R-matrix compound nucleus model, were fitted by assuming three states at Ep(c.m.) = -20 keV (Jπ = 2+; 3+ possible) [Ex = 6.57 MeV] [see, however, Table 10.9 (in PDF or PS)], 310 keV (1-) and 410 keV (1+; 2+ or 3+ possible) (1973SI27).

Measurements of excitation functions for deuterons and α-particles have been reported at a number of energies to Ep = 15 MeV: see (1974AJ01, 1979AJ01), Observed resonances are displayed in Table 10.14 (in PDF or PS).

Polarization measurements have been made in the range Ep = 0.30 to 15 MeV and at 185 MeV: see (1974AJ01, 1979AJ01). See also 6Li, 8Be and (1979AR04, 1983SEZW).

17. 9Be(d, n)10B Qm = 4.3620

Neutron groups are observed corresponding to the 10B states listed in Table 10.15 (in PDF or PS). Angular distributions have been measured for Ed = 0.5 to 16 MeV: see (1974AJ01, 1979AJ01). Observed γ-transitions are listed in Table 10.16 (in PDF or PS) of (1979AJ01). See Tables 10.6 (in PDF or PS) and 10.7 (in PDF or PS) here for the parameters of radiative transitions and for τm.

From all the various experiments the following picture emerges: the first five states of 10B have even parity [from lp]. The ground state is known to have J = 3, by direct measurement, and 10B*(1.74) has Jπ = 0+ and is the T = 1 analog of the 10Cg.s. [from the β+ decay of 10C]. Then looking at the branching ratios and lifetimes of the other states, the sequence for 10B*(0, 0.72, 1.74, 2.15, 3.59) is Jπ = 3+, 1+, 0+, 1+, 2+ [see discussion in (1966LA04, 1966WA10)].

For polarization measurements see (1981BR1E) and 11B in (1980AJ01, 1985AJ01). See also (1977BA1L, 1978PL1B) and (1978BA1F, 1979WA1F, 1982OV1A, 1982SM1F; applications).

18. 9Be(3He, d)10B Qm = 1.0930

Deuteron groups have been observed to a number of states of 10B: see Table 10.15 (in PDF or PS). Angular distributions have been reported at E(3He) = 10 to 25 MeV, at E(3He) = 33.3 MeV [see (1974AJ01, 1979AJ01)] and at E(3He) = 18 MeV (1980BL02). Spectroscopic factors obtained in the (d, n) and (3He, d) reactions are not in good agreement: see the discussions in (1974KE06, 1980BL02).

19. 9Be(α, t)10B Qm = -13.2275

Angular distributions have been studied at Eα = 27, 28.3 and 43 MeV [see (1979AJ01)], at Eα = 30.1 MeV (1983VA1H; α0, α1, α3, α4) and at 65 MeV (1980HA33). In the latter experiment DWBA analyses have been made of the distributions to 10B*(0, 0.72, 1.74, 2.15, 3.59, 5.2, 5.92, 6.13, 6.56, 7.00, 7.5, 7.82, 8.9) and spectroscopic factors were derived. The distributions to 10B*(4.77, 6.03) could not be fitted by either DWBA or coupled-channel analyses. In general, coupled-channels calculations give a better fit to the 65 MeV data than does DWBA (1980HA33; see also for a comparison with the (d, n) and (3He, d) results). See also (1978ZE03; theor.).

20. 9Be(7Li, 6He)10B Qm = -3.388

At E(7Li) = 34 MeV angular distributions have been obtained for the 6He ions to the first four states of 10B. Absolute values of the spectroscopic factors are S = 0.88, 1.38 (p1/2 or p3/2), 1.40 and 0.46 (p1/2), 0.54 (p3/2) for 10B*(0, 0.74, 1.74, 2.15) (FRDWBA analysis) (1977KE09).

21. 10Be(β-)10B Qm = 0.5568

See 10Be.

22. (a) 10B(γ, n)9B Qm = -8.437
(b) 10B(γ, p)9Be Qm = -6.5865
(c) 10B(γ, d)8Be Qm = -6.0274
(d) 10B(γ, α)6Li Qm = -4.4603

Absolute measurements have been made of the 10B(γ, Tn) cross section from threshold to 35 MeV with quasimonoenergetic photons; the integrated cross section is 0.54 in units of the classical dipole sum (60 NZ/A MeV · mb). The (γ, 2n) + (γ, 2np) cross section is zero, within statistics, for Eγ = 16 to 35 MeV (1976KN04). The giant resonance is broad with the major structure contained in two peaks at Ex = 20.1 ± 0.1 and 23.1 ± 0.1 MeV (σmax ≈ 5.5 mb for each of the two maxima). For reaction (b) see (1974AJ01); for reactions (c) and (d) see (1959AJ76, 1966LA04). See also (1978DI1A, 1979TA1C) and (1981KE16, 1983GO1T; theor.).

23. (a) 10B(e, e)10B
(b) 10B(e, en)9B Qm = -8.437
(c) 10B(e, ep)9Be Qm = -6.5865
(d) 10B(e, eπ+)10Be Qm = -140.124

Inelastic electron groups are displayed in Table 10.16 (in PDF or PS) (1979AN08). For reactions (b) and (c) see (1978SH14); for reaction (c) see (1978NA05); for reaction (d) see 10Be (1982ZU03). See also (1979AJ01, 1979TI1A, 1979TR1B) and (1978BO09, 1978FU13, 1981KE15; theor.).

24. 10B(π±, π±)10B

See (1981GE1B).

25. 10B(n, n')10B

Angular distributions have been studied for En = 1.5 to 14.1 MeV: see (1974AJ01, 1979AJ01). See also 11B in (1985AJ01), (1979GL1E, 1981DA1K) and (1979GL1D; theor.).

26. (a) 10B(p, p')10B
(b) 10B(p, 2p)9Be Qm = -6.5865

Angular distributions have been measured for Ep = 3.0 to 49.5 MeV [see (1974AJ01, 1979AJ01)] and at 6.0 (1977SA1B) and 800 MeV (1979MO1E). Table 10.17 (in PDF or PS) displays the states observed in this reaction. The earlier γ-decay results are presented in (1979AJ01) and in Table 10.6 (in PDF or PS) here. See also 11C in (1985AJ01), (1980FA07, 1981HO13) and (1979GL1D, 1980KO1V; theor.). For reaction (b) see 9Be and (1974AJ01).

27. 10B(d, d')10B

Angular distributions have been reported at Ed = 4 to 28 MeV: see (1974AJ01, 1979AJ01). Observed deuteron groups are displayed in Table 10.17 (in PDF or PS). The very low intensity of the group to 10B*(1.74) and the absence of the group to 10B*(5.16) is good evidence of their T = 1 character: see (1974AJ01).

28. 10B(t, t)10B

Angular distributions of elastically scattered tritons have been measured at Et = 1.5 to 3.3 MeV: see (1974AJ01).

29. 10B(3He, 3He')10B

Angular distributions have been measured at E(3He) = 4 to 32.5 MeV [see (1974AJ01, 1979AJ01)] and at 41 MeV (1980TR02; elastic) and 46.1 MeV (1979GO07). L = 2 gives a good fot to the distributions of 3He ions to 10B*(0.72, 2.15, 3.59, 6.03): derived βL are shown in Table 10.19 (in PDF or PS) of (1979AJ01). See also Table 10.17 (in PDF or PS) here.

30. (a) 10B(α, α')10B
(b) 10B(α, 2α)6Li Qm = -4.4603

Angular distributions have been measured for Eα = 5 to 56 MeV [see (1974AJ01, 1979AJ01)] and at Eα = 31.2 MeV (1981KO1U; α0). 10B*(1.74) is not observed. Sα for 10Bg.s. = 0.16 (1976WO11).

Reaction (b) has been studied at Eα = 24 MeV [see (1979AJ01)] and at 700 MeV (1979DO04). Using a width parameter of 141 MeV/c, (1979DO04) find that the effective number of α + d clusters for 10Bg.s., neff = 1.19 ± 0.23; the results are very model dependent. See also (1978ZE03, 1981LA13; theor.).

31. (a) 10B(6Li, 6Li)10B
(b) 10B(7Li, 7Li)10B

Elastic scattering angular distributions have been studied at E(6Li) = 5.8 and 30 MeV and at E(7Li) = 24 MeV: see (1979AJ01).

32. 10B(9Be, 9Be)10B

Elastic scattering angular distributions have been reported at E(10B) = 20.1 and 30.0 MeV (1980BO14).

33. (a) 10B(10B, 10B)10B
(b) 10B(11B, 11B)10B

Elastic angular distributions (reaction (a)) have been studied at E(10B) = 8, 13 and 21 MeV. For yields and reaction (b) see (1979AJ01). See also (1979SH22) and (1978TA1B; theor.).

34. (a) 10B(12C, 12C)10B
(b) 10B(13C, 13C)10B

Elastic angular distributions have been measured at E(10B) = 18 and 100 MeV [see (1979AJ01)] for reaction (a) and at 18, 25, 32, 39 and 46 MeV for reaction (b) (1982MA20).For fusion measurements see (1979AJ01) and (1981MA18, 1982MA20). See also (1978VA1A, 1981DE13, 1982HA42; theor.).

35. 10B(14N, 14N)10B

Angular distributions are reported at E(10B) = 100 MeV [see (1979AJ01)] and at E(14N) = 73.9 and 93.6 MeV (1979MO14; to 10B*(0, 0.72, 2.15)). For fusion cross-section measurements see (1979AJ01) and (1980PA19, 1982BE54, HO82F, 1982HO1F, 1982OR02). See also (1978TA1B) and (1981AB1A; theor.).

36. (a) 10B(16O, 16O)10B
(b) 10B(17O, 17O)10B
(c) 10B(18O, 18O)10B

Elastic angular distribution (reaction (a)) have been studied at E(16O) = 15.0 to 32.5 MeV and at E(10B) = 100 MeV [see (1979AJ01)] as well as at E(10B) = 33.7, 41.6, 49.5 MeV 1980PA01 and 65.8 MeV (1977MO1A, 1979MO14). The ground-state quadrupole moment of 10B is observed to influence the scattering (1980PA01). The elastic scattering for reaction (c) has been studied at E(18O) = 20, 24 and 30.5 MeV: see (1974AJ01). For fusion cross-section measurements and excitation functions see (1979GO09, 1981TH1A) for reaction (a) and (1980WI09, 1982CH07) for reaction (b). See also (1981ST1P) and (1979HU1B, 1980VA03, 1981VA1E, 1983CI08; theor.).

37. (a) 10B(19F, 19F)10B
(b) 10B(20Ne, 20Ne)10B

The elastic scattering has been investigated for E(19F) = 20 and 24 MeV [see (1974AJ01)] (reaction (a)) and for E(10B) = 65.9 MeV (1979MO14) (reaction (b)).

38. (a) 10B(24Mg, 24Mg)10B
(b) 10B(25Mg, 25Mg)10B

The elastic scattering for both reactions has been studied at E(10B) = 87.4 MeV (1982FU09).

39. (a) 10B(27Al, 27Al)10B
(b) 10B(28Si, 28Si)10B
(c) 10B(30Si, 30Si)10B

The elastic scattering for all three reactions has been studied at E(10B) = 41.6 and ≈ 50 MeV (1979PA09; also 33.7 MeV for reaction (b)). See also (1980GL03).

40. 10B(40Ca, 40Ca)10B

The elastic scattering angular distribution has been measured for E(10B) = 46.6 MeV (1980GL03).

41. 10C(β+)10B Qm = 3.6488

The half-life of 10C is 19.255 ± 0.53 sec (1975HA45) [and see (1974AJ01, 1979AJ01)]: the decay is to 10B*(0.72, 1.74) with branching ratios of (98.53 ± 0.02)% and (1.465 ± 0.014)% and log ft = 3.047 for the transition to 10B*(0.72) and 3.492 ± 0.005 for that to the analog state, 10B*(1.74): see Table 10.20 (in PDF or PS) in (1979AJ01). The excitation energies of the two states are 718.32 ± 0.09 and 1740.16 ± 0.17 keV [Eγ = 718.29 ± 0.09 and 1021.78 ± 0.14 keV] (1969FR02). See (1979AJ01) for a further discussion of the decay. See also (1979DE15, 1979FE02, 1979KU05; theor.).

42. 11B(γ, n)10B Qm = -11.454

The intensities of the transitions to 10B*(3.59, 5.16) [T = 0 and 1, respectively] depend on the region of the giant dipole resonances in 11B from which the decay takes place: it is suggested that the lower-energy region consists mainly of T = 1/2 states and the higher-energy region of T = 3/2 states: see 11B in (1980AJ01). (1979BR1D) report observation of the 1.02 MeV line from the decay of 10B*(1.74). See also 11B in (1985AJ01) and (1982GO03, 1983GO1T; theor.).

43. 11B(p, d)10B Qm = -9.230

Angular distributions of deuteron groups have been measured at several energies in the range Ep = 17.7 to 154.8 MeV: see (1979AJ01). The population of the first five states of 10B and 10B*(5.18(u), 6.04(u), 6.56, 7.5, 11.4 ± 0.2, 14.1 ± 0.2) is reported. For VAP measurements see (1982BU03) in 12C (1985AJ01).

44. 11B(d, t)10B Qm = -5.197

Angular distributions have been measured at Ed = 11.8 MeV (t0 → t3; l = 1; S = 1.88, 0.94, 1.35, 1.35, respectively): see (1974AJ01).

45. (a) 11B(3He, α)10B Qm = 9.124
(b) 11B(3He, 2α)6Li Qm = 4.663

Reported levels are displayed in Table 10.18 (in PDF or PS). Angular distributions have been measured at a number of energies between E(3He) = 1.0 and 33 MeV: see (1974AJ01). For the decay of observed states see Table 10.6 (in PDF or PS).

The αα angular correlations (reaction (b)) have been measured for the transitions via 10B*(5.92, 6.03, 6.13, 6.56, 7.00). The results are consistent with Jπ = 2+ and 4+ for 10B*(5.92, 6.03) and require Jπ = 3- for 10B*(6.13). There is substantial interference between levels of opposite parity for the α-particles due to 10B*(6.56, 7.00): the data are fitted by Jπ = 3+ for 10B*(7.00) and (3, 4)- for 10B*(6.56) [the 6Li(α, α) results then require Jπ = 4-]. See however reaction 16, and see (1974AJ01) for the references.

46. 12C(γ, pn)10B Qm = -27.4104

See (1982DO08), 12C in (1985AJ01) and (1981KH08; theor.).

47. 12C(π±, π±d)10B Qm = -25.1858

At Eπ+ = 180 MeV and Eπ- = 220 MeV, 10B*(0.72, 2.15) are populated (1981ST05). See also (1979EL12, 1982EL07).

48. (a) 12C(p, 3He)10B Qm = -19.6923
(b) 12C(p, pd)10B Qm = -25.1858

Angular distributions of 3He ions have been measured for Ep = 39.8, 51.9 and 185 MeV: see (1979AJ01). 10B*(0, 0.72, 1.74, 2.15, 3.59, 4.77, 5.16, 5.92, 6.56, 7.50, 8.90) are populated. For reaction (b) see (1981ER10; 670 MeV) and (1979AJ01). See also (1978GO14; theor.).

49. 12C(d, α)10B Qm = -1.3391

Alpha groups have been observed to most of the known states of 10B below Ex = 7.1 MeV: see Table 10.23 (in PDF or PS) in (1974AJ01). Angular distributions have been measured for Ed = 5.0 to 40 MeV: see (1979AJ01). Single-particle S-values are 1.5, 0.5, 0.1, 0.1 and 0.3 for 10B*(0, 0.72, 2.15, 3.59, 4.77) (1976VA07; ZRDWBA). A study of the ms = 0 yield at Ed-bar = 14.5 MeV (θ = 0°) leads to assignments of 3+, 2- and (3+, 4-) for 10B*(4.77, 5.11, 6.56) (1975KU15). VAP measurements are reported at Ed-bar = 52 MeV (1982MA25): see 14N in (1986AJ01).

The population of the isospin forbidden group to 10B*(1.74) [α2] has been studied with Ed up to 30 MeV: see 14N in (1976AJ04). See also (1981JO02, 1982BA24; theor.).

50. 12C(α, 6Li)10B Qm = -23.7105

Angular distributions have been reported at Eα = 42 and 46 MeV: see (1979AJ01). At Eα = 65 MeV, an investigation of the 6Li breakup shows that 10B*(0, 0.72, 2.16, 3.57, 4.77, 5.2, 5.9, 6.0) are involved (1978SA26).

51. 12C(10B, 3α)10B Qm = -7.2747

See (1978BE1G).

52. (a) 12C(12C, 14N)10B Qm = -14.9134
(b) 12C(14N, 16O)10B Qm = -4.4495

Angular distributions (reaction (a)) involving 10B*(0, 0.7) have been studied at E(12C) = 49.0 to 75.5 MeV (1979CL06, 1980CO10) and 93.8 MeV (1979FU04). Angular distributions (reaction (b)) involving 10B*(0, 0.72, 2.15, 3.59) have been measured at E(14N) = 53 MeV [see (1979AJ01)] and 78.8 MeV (1979MO14; not to 10B*(3.59)).

53. 13C(p, α)10B Qm = -4.0609

Angular distributions have been measured for Ep = 5.8 to 18 MeV and 43.7 and 50.5 MeV: see (1979AJ01). Polarization measurements are reported at Epol. p = 65 MeV (1980KA03; p0): see 14N in (1986AJ01).

54. 14N(p, pα)10B Qm = -11.6115

See (1978GO14; theor.).

55. 14N(d, 6Li)10B Qm = -10.136

At Ed = 80 MeV angular distributions are reported to 10B*(0, 0.72, 2.15, 3.59, 4.8, 6.04, 7.05, 8.68) (1979OE01; see for Sα).

56. 14N(3He, 7Be)10B Qm = -10.024

At E(3He) = 41 MeV groups to 10B*(0, 0.72, 2.15, 3.59, 6.1) have been observed. The transition to 10B*(1.74) is very weak: see (1979AJ01).

57. 16O(14N, 20Ne)10B Qm = -6.877

At E(14N) = 76.2 MeV angular distributions involving 10B*(0, 0.7) are presented by (1979MO14).