A=17F (1986AJ04)

The half-life of ¹⁷F is 64.49 ± 0.16 sec; log ft = 3.358 ± 0.002. The log ft for the transition to ¹⁷O*(0.87) is > 5.6: see (1982AJ01). See also (1983GO2C, 1983RA29, 1985BR29) and (1981ME1H, 1982OS1C, 1984AR1D, 1984BE11; theor.).

2. ¹²C(¹⁴N, ⁹Be)¹⁷F Q_m = -10.4358

See (1982AJ01).

3. ¹⁴N(³He, γ)¹⁷F Q_m = 15.8432

Excitation functions for γ₀₊₁, γ₂ and γ₃ have been studied for E(³He) ≈ 3 to 18 MeV. Resonances are reported corresponding to ¹⁷F states at 20.1 ± 0.2 (γ₂) [Γ = 1.07 ± 0.16 MeV], 20.4 ± 0.1 (γ₁) [0.7 ± 0.1] and 21.3 ± 0.1 MeV (γ₁) [0.9 ± 0.1] (1983WA05): see Table 17.19 (in PDF or PS) in (1982AJ01). For neutron and charged-particle channels see reaction 6 in (1982AJ01).

4. (a) ¹⁴N(⁶Li, t)¹⁷F Q_m = 0.0476
(b) ¹⁴N(⁶Li, tα)¹³N Q_m = -5.7713

Angular distributions (reaction (a)) have been measured at E(⁶Li) = 36 MeV involving ¹⁷F*(8.43, 10.7, 11.9, 13.51, 14.84). Comparisons are made with the results in the analog reaction (reaction 19) in ¹⁷O (1984ET01). [Comment: compare the experimental resolution with the density of states]. For the earlier work see (1982AJ01).

5. ¹⁵N(³He, n)¹⁷F Q_m = 5.0099

Angular distributions have been reported to most of the states of ¹⁷F with E_x < 8.1 MeV at E(³He) = 3.8 and 4.8 MeV. 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 (1969AD02). 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. See (1977AJ02) for references.

6. ¹⁶O(p, γ)¹⁷F Q_m = 0.6005

At low energies the direct capture to ¹⁷F*(0, 0.50) is observed. Extrapolation of cross-section data leads to S(0) ≈ 8 keV · b: see (1977AJ02). In addition to two T = 1/2 resonances, 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. 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 (1975HA06).

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 (1975HA07). See also (1982AN1D, 1982BE29, 1983RA1G, 1984JEZY), (1982BA80, 1984BO1Q; astrophysics), (1985BL1B, 1986WE1D) and (1982DU1A, 1984PE02; theor.).

7. (a) ¹⁶O(p, p)¹⁶O E_b = 0.6005
(b) ¹⁶O(p, 2p)¹⁵N Q_m = -12.1276
(c) ¹⁶O(p, pn)¹⁵O Q_m = -15.6639
(d) ¹⁶O(p, pα)¹²C Q_m = -7.16195

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 (1971AJ02, 1977AJ02, 1982AJ01). The observed resonances are displayed in Table 17.19 (in PDF or PS). Absolute σ(θ) [θ = 110° to 160°] have been measured for E_p = 0.60 to 2.00 MeV to ± 5% (1983BR11). Cross sections for bremsstrahlung emission are reported in the vicinity of the E_p = 2.66 MeV resonance by (1983TRZZ). The cross sections of the 6.13 MeV γ-ray at E_p = 23.7 and 44.6 MeV have been measured by (1981NA14), and (1979SC07) report the σ_t for E_p = 190 to 558 MeV. See also (1982AJ01).

A_y measurements have beem recently reported at E_{pol. p} = 35 MeV (1986OH1C; to ¹⁶O*(10.96, 12.80)), 65 MeV (1982SA19; p₀), 65 MeV (1984HO17; to ¹⁶O*(10.96, 12.80)), 135 and 180 MeV (1983HYZZ; to ¹⁶O*(8.87)), 180 MeV (1983FIZW; to many states including ¹⁶O*(11.10)) and 200 MeV (1985GL01; p₀). At E_{pol. p} = 318 and 498 MeV (1983LOZW, 1986LO1D) have measured A_y and spin transfer observables for the p₀, p₂, p₃ and p₄ groups. Polarization transfer coefficients have been studied at E_{pol. p} = 200 MeV to the 4^- states ¹⁶O*(17.79, 19.81) [T = 0] and ¹⁶O*(18.98) [T = 1] (1985WIZW, 1986OL1A). The spin rotation parameter Q has been measured for the elastic scattering at E_{pol. p} = 65 MeV by (1986SA1J), at 200 MeV by (1985STZW, 1986ST1G) [see (1986ST1F) for polarization transfer coefficients for ¹⁶O*(17.79, 18.98, 19.81)] and at 800 MeV by (1986FE01). See also (1986GL1G). For the earlier work see (1982AJ01).

For reaction (b) see (1982REZZ). For reaction (c) see (1983WA1C, 1984WA21). See also (1982REZZ). For fragmentation see (1985GU1A, 1985VDZX). See also ¹⁶O and (1982AU1A, 1982BE1A, 1982YA1A, 1983BE1A, 1984GE1A, 1984RE14) and (1981PI11, 1981SH1A, 1982CO17, 1982KO23, 1982NA13, 1982YA07, 1983BE1B, 1983KE1B, 1983KO1B, 1983SH05, 1984GO04, 1984HY01, 1984PH02, 1984PI05, 1984PI17, 1984WO12, 1985AU02, 1985DY03, 1985HY01, 1985KE1A, 1985KO37, 1986DE1G, 1986KU1D, 1986LO1A; theor.).

8. ¹⁶O(p, n)¹⁶F Q_m = -16.199 E_b = 0.6005

The analyzing power for the transition to the 4^- state ¹⁶F*(6.37) has been measured at E_{pol. p} = 135 MeV (1982MA11). See also ¹⁶F.

9. ¹⁶O(p, d)¹⁵O Q_m = -13.4393 E_b = 0.6005

The excitation function for d₀ (θ = 70°) has been measured for E_p = 21 to 38.5 MeV. A strong resonance is observed at E_p = 24 MeV: see Table 17.19 (in PDF or PS). The analyzing power has been measured for the d₀ group at E_{pol. p} = 65 MeV (1980HO18). See (1982AJ01) for the earlier work.

10. (a) ¹⁶O(p, t)¹⁴O Q_m = -20.4045 E_b = 0.6005
(b) ¹⁶O(p, ³He)¹⁴N Q_m = -15.2428

See (1982AJ01) and ¹⁴N, ¹⁴O in (1986AJ01).

11. ¹⁶O(p, α)¹³N Q_m = -5.2184 E_b = 0.6005

Observed resonances are displayed in Table 17.19 (in PDF or PS). Some broad structures have been reported above E_p ≈ 15 MeV; particularly strong peaks appear at E_p ≈ 22 and 25.5 MeV: see (1977AJ02).

This reaction is involved in explosive burning in stars: see (1977AJ02, 1982AJ01) for the earlier work and (1979MO04).

12. ¹⁶O(d, n)¹⁷F Q_m = -1.6241

Parameters of the first excited state of ¹⁷F are E_x = 495.33 ± 0.10 keV, τ_m = 407 ± 9 psec: see (1971AJ02). See also Table 17.21 (in PDF or PS) in (1971AJ02). For polarization measurements see (1981LI23) and ¹⁸F in (1983AJ01). See also (1983CR1A).

13. ¹⁶O(³He, d)¹⁷F Q_m = -4.8931

At E(³He) = 18 MeV, angular distributions of the deuterons to ¹⁷F*(0, 0.50, 3104 ± 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). Angular distributions have also been measured at E(³He) = 30 MeV (to ¹⁷F*(5.1, 5.7)) and at E(pol. ³He) = 33 MeV (d₀, d₁): see (1982AJ01) for references.

14. (a) ¹⁶O(¹⁰B, ⁹Be)¹⁷F Q_m = -5.9855
(b) ¹⁶O(¹¹B, ¹⁰Be)¹⁷F Q_m = -10.6276
(c) ¹⁶O(¹²C, ¹¹B)¹⁷F Q_m = -15.3566
(d) ¹⁶O(¹³C, ¹²B)¹⁷F Q_m = -16.933
(e) ¹⁶O(¹⁴N, ¹³C)¹⁷F Q_m = -6.9502
(f) ¹⁶O(¹⁶O, ¹⁵N)¹⁷F Q_m = -11.5271

See (1982AJ01). See also (1984CL09; theor.) for reaction (f).

15. ¹⁷O(p, n)¹⁷F Q_m = -3.5432

At E_p = 135.2 MeV differential cross sections are reported for the transitions to ¹⁷F*(0, 0.5 ± 0.05, 4.84 ± 0.1, 5.89 ± 0.2, 6.34 ± 0.2, 7.26 ± 0.2, 7.64 ± 0.2, 9.3 ± 0.1, 14.3 ± 0.1). [Note known density of states.] The group to ¹⁷F*(4.84) has Γ = 1.8 ± 0.05 MeV (1985PU1A). For a discussion of Gamow-Teller transition probabilites see (1985WA24). For A_y measurements see (1985PU1A, 1983PUZZ). For the earlier work see (1982AJ01).

16. ¹⁷O(³He, t)¹⁷F Q_m = -2.7794

Angular distributions have been studied at E(³He) = 17.3 MeV [t₀, t₁] and at E(pol. ³He) = 33 MeV [t₀]: see (1982AJ01).

17. ¹⁷Ne(β⁺)¹⁷F Q_m = 14.53

See ¹⁷Ne.

18. ¹⁸O(¹⁸O, ¹⁹N)¹⁷F Q_m = -19.39

See (1983DE1A).

19. ¹⁹F(p, t)¹⁷F Q_m = -11.0998

See (1977AJ02).

20. ²⁶Mg(¹⁸O, ²⁷Na)¹⁷F Q_m = -13.30

See (1985FI08).