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GENERAL: See also (71AJ02) and Table 17.17 [Table of Energy Levels] (in PDF or PS).

Shell and cluster models: (HA70M, EN72B, LE72, DE73E, KU73C, LA73A, RE73G, SM73C, LO74).

Special levels: (WI69G, SE71C, BE72U, EN72B, LE73F, VA74H).

Electromagnetic transitions: (AL70O, HA70M, SI70J, EN72B, SE72I, HA73LL, LE73F, HA74W, LO74, MC74G, SH76B).

Special reactions: (AR71, LI74B, WI75A).

Other topics: (RY70B, SI70J, AU71A, SE71C, VA71C, BA72Z, CA72P, CH72I, LE72, SH72M, DE73E, GO73I, OS73B, RE73G, RO73L, BR74M, RE74, SL74, VA74H, SH75I, SH75J).

Ground state:

See also (AL70O, SI70J, SH71I, TA71G, LE72, VA72H, YO72C, NO73D, RE73G, AN74D, HA74O, MC74G, RE74, WI74B, BE75Q, CH76D).

1. 17F(β+)17O

Qm = 2.762

The half-life of ¹⁷F is 65.2 ± 0.2 sec (WO69H), 64.50 ± 0.25 sec (AL72M). The mean of previous values [see Table 17.18 (in PDF or PS) in (71AJ02)] was 66.0 ± 0.2 sec which was the value reported by (JA60J). We adopt τ_1/2 = 64.50 ± 0.25 sec, log ft = 3.488 ± 0.001 (AL72M) but suggest that another measurement of this half-life is in order. The upper limit for the β⁺ decay to ¹⁷O*(0.87) is < 3.4 x 10^-4 per decay (GA69E) [log ft > 5.6]. See also (KO70L, MC70S, BH71, LI71G, WI71K, WI72I, WI72L, LA73, MU73L, WI73B, WI73D, WI74F, BA75Q, BL75C, KR75C, WI75D; theor.).

2. 12C(12C, 7Li)17F

Qm = -16.861

See (71AJ02).

3. 12C(14N, 9Be)17F

Qm = -10.436

See (ZE75).

4. 14N(3He, γ)17F

Qm = 15.8437

The yield of γ₀₊₁ at 90° shows resonant structures at E(³He) = 4.35 ± 0.05, 5.36 ± 0.05, 5.7 and 6.28 ± 0.05 MeV, corresponding to ¹⁷F*(19.42, 20.25, 20.5, 21.01), respectively. Angular distribution measurements are consistent with J^π = 5/2⁺, 7/2^-, (3/2^-) and 1/2⁺ for these states; the widths of the three highest ones are ~ 350, 210 and 280 keV (MO73H).

5. (a) 14N(3He, n)16F	Qm = -0.969	Eb = 15.8437
(b) 14N(3He, p)16O	Qm = 15.2430
(c) 14N(3He, d)15O	Qm = 1.8037
(d) 14N(3He, np)15O	Qm = -0.4210
(e) 14N(3He, 3He)14N
(f) 14N(3He, α)13N	Qm = 10.025
(g) 14N(3He, 2α)11C	Qm = 2.2955

Excitation functions for p₀ have been measured for E(³He) = 2.5 to 5.5 MeV (GO63), 3.5 to 18 MeV (BI72) and 5.5 to 10.5 MeV (GU71J; also p₁₊₂, p₃, p₄): some large structures are observed. The elastic scattering of ³He (reaction (e)) has been studied for E(³He) = 4 to 7 MeV: there is some evidence in the excitation functions of the resonances reported in (³He, γ) (reaction 4) (MO73H). The yields of α₀, α₁ and α₂₊₃ (reaction (f)) in the range E(³He) = 2.5 to 8.5 MeV show broad un-correlated fluctuations, except for a structure at E(³He) = 4.5 MeV (KN70A). However, a study of α₀ [E(³He) = 3.5 to 7 MeV] shows, at θ = 150°, strong structures corresponding to the resonances at E(³He) = 4.35 and 5.36 MeV reported in (³He, γ): their analysis suggests Γ = 300 and 350 keV (MO73H). For reaction (d) see (AD73B). See also (AD71D), (71AJ02, LO74F), (FA74; theor.), ¹⁶O, ¹⁶F, and ¹³N, ¹⁴N and ¹⁵O in (76AJ04).

6. 14N(α, n)17F

Qm = -4.7347

See ¹⁸F in (72AJ02). See also (DO73F).

7. 14N(6Li, t)17F

Qm = 0.049

At E(⁶Li) = 18 MeV the triton groups in this reaction and the ³He groups in the mirror reaction have been compared. ¹⁷F*(3.86, 5.22, 5.67 + 5.68) are strongly excited. A state at E_x = 5.220 ± 0.010 MeV is identified as the mirror state to ¹⁷O*(5.22): its probable J^π is 9/2^-. ¹⁷F*(0, 0.50, 3.10, 4.70, 5.52, 5.82, 6.04, 6.70) are also populated (BI73A). See also (BA72P).

8. 14N(10B, 7Li)17F

Qm = -1.944

See (HA76B).

9. 15N(3He, n)17F

Qm = 5.0101

Angular distributions have been measured for the neutron groups to ¹⁷F*(0, 0.50, 3.10, 3.86) at E(³He) = 3.8 and 4.8 MeV and to ¹⁷F*(4.70, 5.52, 5.68) at the higher energy. The population of a state at E_x = 5.179 ± 0.020 MeV and of ¹⁷F*(6.04, 6.70, 7.03, 7.36, 8.08) is also reported. ¹⁷F*(5.18) probably has J^π = 3/2⁺ or 9/2⁺ (TH72E, ET73). Neutron groups have also been reported to ¹⁷F states at E_x = 11.195 ± 0.007, 12.540 ± 0.010 and 13.059 MeV, with Γ < 20, < 25 and < 25 keV, respectively. Angular distributions at E(³He) = 10.36 and 11.88 MeV lead to J^π = 1/2^- for ¹⁷F*(11.20) [L = 0], 3/2^- or 5/2^- for ¹⁷F*(12.54) and (3/2^-, 5/2^-) for ¹⁷F*(13.06). These three states are probably the first three T = 3/2 states in ¹⁷F (AD69). The branching ratios for transitions to ¹⁶O*(0, 6.05, 6.13) for ¹⁷F*(11.20) and for the analog T = 3/2 state in ¹⁷O are displayed in Table 17.11 (in PDF or PS): the ratios of the reduced widths are quite different in the two mirror nuclei (MC70B, AD73B).

10. 16O(p, γ)17F	Qm = 0.6007
	Q0 = 600.35 ± 0.28 keV (RO75F).

At low energies the direct capture to ¹⁷F*(0, 0.50) has been observed: see (71AJ02) for a summary of the earlier measurements and (RO73AA: 0.3 - 3.1 MeV), (CH75S: 0.85 - 2.55 MeV). Extrapolation of cross section data leads to S(0) = 9 keV · b (RO73AA), 7.45 keV · b (BA71VV). See also (CH75S, CL73C). An anomaly is observed at E_p = 2.66 MeV [¹⁷F*(3.10)] in the yield of the γ-ray transition to ¹⁷F*(0.50): Γ_γ = 12 ± 2 meV; C²S = 0.90 and 1.00, respectively, for ¹⁷F*(0, 0.50) (RO73AA). Another resonance is observed at E_p = 3.47 MeV [¹⁷F*(3.86)]: angular distributions of the γ-rays are characteristic of an almost pure dipole transition. The data lead to J^π = 5/2^-, Γ < 1.5 keV, Γ_γ = 0.11 ± 0.02 eV, τ_m = 6 ± 1 fsec (SE63E). For ¹⁷F*(0.50), τ_m = 445 ± 22 psec (KA60B).

Five resonances corresponding to T = 3/2 states are observed in the γ₁ and γ₀ + γ₁ yields: see Table 17.18 (in PDF or PS) for the reported parameters (HA75G). The lowest T = 3/2 states of even parity at E_x = 13.27 and 14.02 MeV [J^π = (1/2⁺) and 5/2⁺] (see Table 17.19 (in PDF or PS)) are not observed here: Γ_γ < / = 7 and < / = 11.8 eV, respectively (HA75G). The (E1) values for the T = 3/2 states are in good agreement with shell model 2p - 1h calculations using realistic Kuo-Brown interaction matrix elements (HA75G).

The (γ₀ + γ₁) yield at 90° has been studied for E_p = 15.75 to 31.66 MeV: it shows the giant dipole resonance centered at E_x = 22 MeV with a width of ~ 5 MeV and a pigmy resonance centered at 17.5 MeV. The integrated strength of the, mainly T = 1/2, giant resonance is 10 MeV · mb: the observed strength distribution is in good agreement with odd parity 2p - 1h, 1p excitation calculations. The pigmy resonance is due to f_7/2 --> d_5/2: the main f_7/2 strength lies in two states at E_x = 16.9 and 18.0 MeV (HA75H). See also (JO71D).

11. (a) 16O(p, p)16O		Eb = 0.6007
(b) 16O(p, pα)12C	Qm = -7.1616
(c) 16O(p, pn)15O	Qm = -15.6640

Yield curves for elastic protons, protons scattered to ¹⁶O*(6.05, 6.13, 6.92, 7.12, 8.87) and for γ-rays from ¹⁶O*(6.13, 6.92) have been studied at many energies up to E_p = 46 MeV: see Table 17.19 (in PDF or PS) in (71AJ02) for a listing of the earlier measurements and (CH75S: p₀, 171.5_c.m., E_p = 0.39 to 1.99 MeV), (AU71C: p₁₊₂, p₅; σ_t; E_p = 17.0 to 46.1 MeV) and (BU69J, BU71B: p₀, p₁₊₂, p₅; E_p = 21.3 to 38.5 MeV). The observed resonances are displayed in Table 17.19 (in PDF or PS). Phase-shift analyses of elastic scattering polarization and cross section data have led to an increased understanding of the T = 1/2 states of ¹⁷F (PR71B, HI75) and the work of (SK74, HI76D) has fixed the characteristics of the first seven T = 3/2 states of ¹⁷F. (SK74) has studied the isospin multiplet mass equation by comparing analog T = 3/2 states in A = 17. See also (IK76).

Other polarization measurements are reported at E_p = 3.47 and 6.83 MeV (DA74A; p₀), 20 MeV (PL74B, PL76C; p₃, p₄, p₆, p₇), 30.3 MeV (SW76; p₀, p₂, p₃, p₅), 30.4 MeV (GR72; p₀, p₅), 30.4 to 39.9 MeV (LE76M; p₅) and 49.4 MeV (CL70D; p₀). See also (KL71F). Total reaction cross section measurements are reported at E_p = 18.8 to 47.7 MeV (CA75K), 21 to 43 MeV (SL75A), and 231, 345, 464 and 552 MeV (RE72E). See also (BE71B, CR71, GO73Z, WU76).

For reaction (b) see (EP71B: 46.8 MeV). For reaction (c) see (VA65). For spallation measurements see (BE73CC, LA74C). See also (SH70I, EP71C, ST71L, AM72A, BA73PP).

See also ¹⁶O, (71AJ02, PA71H), (ME75B; astrophys. considerations) and (GE72A, PH72B, CL73, MO73C, RU73A, TH73E, SI74E, BA75A, CA75C, GE75D, SM75, TA75F, TH75, TH75C, CO76A; theor.).

12. 16O(p, n)16F

Qm = -16.212

Eb = 0.6007

See ¹⁶F and (MO74A; theor.).

13. 16O(p, d)15O

Qm = -13.4393

Eb = 0.6007

The excitation function for d₀ at θ = 70° has been measured for E_p = 21 to 38.5 MeV: a strong resonance is observed at E_p ~ 24 MeV (BU69J, BU71B): see Table 17.19 (in PDF or PS). For polarization measurements see (CH67J; 30.3 MeV; d₀, d₃). See also ¹⁵O in (76AJ04) and (DE70R, SA71F; theor.).

14. (a) 16O(p, t)14O	Qm = -20.4064	Eb = 0.6007
(b) 16O(p, 3He)14N	Qm = -15.2430

The excitation function at θ = 70° for tritons (reaction (a)) has been measured for E_p = 32 to 39.5 MeV: no structure is observed (BU69J, BU71B). Differential cross sections and analyzing powers have been studied at E_p = 43.8 MeV for the transitions to ¹⁴O*(0, 5.17, 6.29, 6.59, 7.78, 9.72) and ¹⁴N*(0, 2.31, 3.95, 5.11, 7.03, 9.17): attempts to fit the analyzing powers with zero-range DWBA were only successful for the first pair of analog states [¹⁴O_g.s., ¹⁴N*(2.31)] (MA74C). For other polarization measurements see (NE70M: E_p = 49.5 MeV; t₀, ³He to ¹⁴N*(0, 2.31)). See also (MI75, PL76C), (71AJ02, HA72HH, DA76K) and ¹⁴N and ¹⁴O in (76AJ04).

15. 16O(p, α)13N

Qm = -5.218

Eb = 0.6007

Excitation functions of various α-groups and activation functions have been measured from threshold to E_p = 44 MeV: see Table 17.19 (in PDF or PS) in (71AJ02) for the earlier work and (MC73H, MC73J: 5.6 to 7.7 MeV; σ_t), (NE73I: 5.7 to 10.5 MeV; σ_t for α₀). (GU71K: 19 to 44 MeV; σ_t for α₀, α₁, α₂₊₃, α₄) and (BU69J, BU71B: 21.5 to 38.5 MeV). In addition, the work of (SK74, HI76D) has established the parameters of the first seven T = 3/2 states of ¹⁷F: see Table 17.19 (in PDF or PS). No other resonances corresponding to T = 3/2 states have been observed below E_x = 16.21 MeV (SK74). Resonances corresponding to T = 1/2 states are also reported in Table 17.19 (in PDF or PS). Some broad structures have been reported above E_p ~ 15 MeV: see (71AJ02) and (BU71B, GU71K): particularly strong peaks appear at E_p ~ 22 and 25.5 MeV (BU71B).

This reaction is involved in explosive oxygen burning in stars: cross sections, and reaction rates determined as a function of the temperature of the star are discussed in (NE73I, MC73H, WO73D). See also (AR73O).

16. 16O(d, n)17F

Qm = -1.6239

Slow neutron thresholds have been observed corresponding to the ground and first excited states of ¹⁷F: see (71AJ02). The E_x of ¹⁷F*(0.50) is 495.33 ± 0.10 keV (AL66G; from γ-measurement); τ_m = 407 ± 9 psec (BE64F). Neutron groups have been observed corresponding to ¹⁷F*(0, 0.50, 3.10, 3.86, 4.70). Angular measurements have been obtained for the n₀ and n₁ groups (l_p = 2 and 0; J^π = 5/2⁺ and 1/2⁺, respectively) for E_d < / = 12 MeV: see Table 17.21 (in PDF or PS) in (71AJ02). For polarization measurements see (AN72K; n₀, n₁; E_d = 3 - 4 MeV). See also (TH71H, FR76A), (LO76E; applied) and (DZ72, SH76E; theor.).

17. (a) 16O(3He, d)17F	Qm = -4.8930
(b) 16O(3He, dp)16O	Qm = -5.4938

At E(³He) = 18 MeV, angular distributions of the deuterons to ¹⁷F*(0, 0.50, 3.104 ± 0.003, 3.857 ± 0.004) have been measured. The spectroscopic factors for ¹⁷F*(0, 0.50) are 0.94 and 0.83. Two step processes appear to be involved in the excitation of ¹⁷F*(3.10, 3.86) (FO75J). See also (PR72C). For reaction (b) see (HO67J). See also (71AJ02).

18. 16O(α, t)17F

Qm = -19.2139

See (PR72C). See also (71AJ02).

19. 16O(7Li, 6He)17F

Qm = -9.377

The angular distribution involving ¹⁷F_g.s. has been measured at E(⁷Li) = 36 MeV (SC73M).

20. 16O(10B, 9Be)17F

Qm = -5.985

Angular distributions have been measured at E(¹⁰B) = 100 MeV for the transitions to ¹⁷F*(0 + 0.50, 5.1, 8.1) (NA75J).

21. 16O(11B, 10Be)17F

Qm = -10.629

¹⁷F*(0 + 0.50) are populated at E(¹¹B) = 113 MeV (PO67A). See also (AL71E; theor.).

22. 16O(12C, 11B)17F

Qm = -15.357

See (SC72I). See also (SC71R).

23. 16O(14N, 13C)17F

Qm = -6.950

Angular distributions involving ¹⁷F*(0, 0.50) have been measured at E(¹⁴N) = 79 MeV (MO76) and 155 MeV (NA75J, NA76H).

24. 16O(16O, 15N)17F

Qm = -11.527

See (RO74B).

25. 17O(p, n)17F

Qm = -3.542

Angular distributions of the n₀ and n₁ groups have been obtained for E_p = 6.95 to 13.50 MeV (n₀) and 6.95 to 12.45 MeV (n₁). There appears to be collective enhancement in the L = 2 transition to ¹⁷F*(0.5). A large spin-flip term in the effective two-body force is necessary to account for the strength of the ground state transition (AN69A). See also ¹⁸F in (78AJ03).

26. 17O(3He, t)17F

Qm = -2.778

At E(³He) = 17.3 MeV, angular distributions have been obtained for the tritons corresponding to ¹⁷F*(0, 0.50). The data have been analyzed using DWBA and a two-body interaction between the incident and target nucleons. An exact coupled-channel-equation calculation was also made for the ground state transition (HA68B). See also (71AJ02).

27. 17Ne(β+)17F

Qm = 14.53

See ¹⁷Ne.

28. 19F(γ, 2n)17F

Qm = -19.581

See (OC59, AN76) and ¹⁹F in (78AJ03).

29. 19F(p, t)17F

Qm = -11.099

Angular distributions have been measured for the t₀, t₁, t₂ and t₃ groups at E_p = 22.8 MeV (HO63N), 42.4 MeV (NE74A) and 45 MeV (HU72G). See also (AN68J, PR72C), (71AJ02) and ²⁰Ne in (78AJ03).

30. 20Ne(p, α)17F

Qm = -4.1293

See (71AJ02). See also (CL73C; astrophys. considerations).