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USNDP

10C (74AJ01)


(See Energy Level Diagrams for 10C)

GENERAL: See also (66LA04) and Table 10.24 [Table of Energy Levels] (in PDF or PS).

Model calculations: (FA68C, SA69K, SO69A, SA73S).

Special reactions: (AU67A, YI69A, AR71).

Pion reactions (See also reaction 3.): (AL73D, CH73O).

Other topics: (FA68A, FA68C, SO69A, SO69D, FO70J, AN72B, CA72P).

Ground-state properties: (KE66C, FA68A, FA68C, GA69O, SA73S).

1. 10C(β+)10B Qm = 3.650

10C decays with a half-life of 19.42 ± 0.06 sec to 10B*(0.7, 1.7): the branching ratios are 98.53 ± 0.02% and 1.465 ± 0.014%, respectively (RO72C): see reaction 39 in 10B and Tables 10.21 (in PDF or PS) and 10.24 (in PDF or PS).

2. 7Be(3He, 2p)4He4He Qm = 11.274 Eb = 14.999

See (PA72L; astrophys.).

3. 9Be(p, π-)10C Qm = -136.634

At Ep = 185 MeV the π- spectrum shows groups corresponding to 10C*(0, 3.36 ± 0.07, 5.28 ± 0.06, 6.63 ± 0.15). Angular distributions have been obtained for the π- corresponding to these four states. The π+/π- intensity ratio is usually >> 1 for analog states in 10Be and 10C (DA73F). See also (DA71A, RO72N, DI73D).

4. 9Be(3He, 2n)10C Qm = -5.566

See (MO73B).

5. 10B(p, n)10C Qm = -4.433

Ethresh. = 4880.0 ± 2.0 keV;

Q0 = -4432.8 ± 1.8 keV (FR66E).

The first excited state of 10C is located at Ex = 3.3527 ± 0.0015 MeV (PA69: from γ-decay), 3.38 ± 0.03 MeV (EA63: neutron threshold), 3.35 ± 0.01 MeV (SE66: from γ-decay). τm for 10C*(3.35) = 155 ± 25 fsec; Γγ = 4.25 ± 0.69 meV (FI68C). Angular distributions have been measured for the n0 and n1 groups and for the neutrons corresponding to 10C*(5.2 ± 0.3) at Ep = 30 and 50 MeV. The excitation of 10C*(6.5 ± 0.3, 8.3 ± 0.3, 8.9 ± 0.3) is also reported (CL70). See also (BR69F, GO73O), (66LA04) and 11C in (75AJ02).

6. 10B(3He, t)10C Qm = -3.669

At E(3He) = 14 MeV the angular distribution of the t0 group has been measured (NU70). At E(3He) = 30.6 and 40 MeV triton groups have been observed to 10C*(0, 3.37 ± 0.03, (5.03 ± 0.06), 5.28 ± 0.06, (5.60 ± 0.06), 6.58 ± 0.06) (MA66H). At E(3He) = 30.3 MeV, the energy of the first excited state is determined to be 3.344 ± 0.008 MeV, and the triton groups corresponding to the two states at Ex = 5.03 and 5.60 MeV suggested by (MA66H) are assigned to 11C (BR68I). See also 13N in (76AJ04).

7. 10B(6Li, 6He)10C Qm = -7.160

Both 10C*(0, 3.35) are strongly populated at E(6Li) = 30 MeV, θ = 16° (LE72H).

8. 12C(γ, 2n)10C Qm = -31.846

See (OC59).

9. 12C(p, t)10C Qm = -23.364

Angular distributions have been reported at Ep = 30.0 to 54.1 MeV (CO67I; t0), 43 MeV (BE67S; t0, t1, and to 10C*(5.3)), 43.7 MeV (CE66F; t0, t1) and 49.5 MeV (NE70M; t0, t1; polarized protons). L = 0, 2 and 2, respectively for 10C*(0, 3.35, 5.3), and therefore Jπ = 0+, 2+ and 2+: see (BE67S). [10C*(5.3) may correspond to several unresolved states: see 10Be.] At Ep = 43 and 52 MeV (BE67S) report the excitation of 10C*(5.29 ± 0.06, 6.61 ± 0.06) [Γc.m. = 300 ± 50 keV for both these states]. The states at Ex = 7.2 ± 0.2 and 10.2 ± 0.2 MeV reported by (BA65O) are not observed. See also (CA65G, TA68) and (KA71; theor.).

10. 12C(12C, 10C)14C Qm = -18.723

See (MO72H, SC73K).

11. 13C(3He, 6He)10C Qm = -15.243

At E(3He) = 70.3 MeV the angular distributions of the 6He ions corresponding to the population of 10C*(0, 3.35) have been measured. The group to 10C*(3.35) is much more intense than the ground state group: multi-step processes may be important (KA73C). Three states of 10C are observed with Ex ~ 10 MeV. One of these [Ex = 10.72 MeV] is very strongly populated. A search for a T = 2 state with Ex ~ 22 MeV was unsuccessful (BE73Y).

12. 14N(3He, 7Li)10C Qm = -12.816

See (DE71U).