Information on mass chains and nuclides

3	4
5	6
7	8
9	10
11	12
13	14
15	16
17	18
19	20
Group Info
Publications
HTML
General Tables
Level Diagrams
Tables of EL's
NSR Key# Retrieval
ENSDF
Excitation Functions
Thermal N Capt.
G.S. Decays
Half-Lives Table
TUNL Dissertations
NuDat at BNL
Useful Links
Citation Examples
Home
Sitemap
Directory
Email Us

WWW TUNL

GENERAL: See (1972AJ02) and Table 19.1 [Table of Energy Levels] (in PDF or PS).

Shell model: (1970MI1K, 1971DE1W, 1972AL33, 1972LE13, 1973CO03, 1973JU1A, 1973LA1D, 1973MC06, 1974CO39, 1975BA81).

Cluster, collective or deformed models: (1973LA27).

Electromagnetic transitions: (1972AL33, 1973LA27, 1974LA1F).

Special states: (1972AL33, 1972LE13, 1973JU1A, 1973MC06, 1975BA81, 1975MI07).

Complex reactions involving ¹⁹O: (1973BA81, 1973WI15, 1974BA89, 1975FO09, 1977AR06).

Reactions involving muons: (1972KH1A, 1973HO1R).

Other topics: (1973CO03, 1973GR11, 1973LA27, 1973SP1A, 1974CO39, 1975BA81, 1977DA10, 1977SH13).

Ground state properties of ¹⁹O: (1973LA27, 1973MC06, 1974CO39, 1975BE31, 1976DU04).

1. 19O(β-)19F

Qm = 4.819

The weighted mean of several reported half-lives is 26.91 ± 0.08 sec: see (1972AJ02). The decay is complex: see ¹⁹F and Table 19.19 (in PDF or PS). See also (1972EY01) and (1973LA03, 1973WI11, 1975NA20, 1975NA21, 1977AZ02; theor.).

2. 9Be(18O, 8Be)19O

Qm = 2.292

See (1971BA68). See also (1971NI04) and (1972AJ02).

3. 13C(7Li, p)19O

Qm = 7.413

Angular distributions have been measured at E(⁷Li) = 16 MeV to the first eight states of ¹⁹O (1973WI08) and to a state at E_x = 3946.8 ± 2.5 keV (1974FO26). Using the (2J_f + 1) relationship (1973WI08) suggest J = 3/2 for ¹⁹O*(3.24) and (1974FO26) set J = 7/2 → 13/2 for ¹⁹O*(3.95). The high spin of this latter state suggests that it is not the same state as the one at the same E_x reported in the ¹⁸O(d, p) reaction (1974FO26). See also (1974FO1J).

4. 17O(t, p)19O

Qm = 3.520

Proton groups corresponding to ¹⁹O states with E_x < 5.6 MeV are displayed in Table 19.3 (in PDF or PS) (1966WI05) as are J^π assignments based in part on DWBA analysis (1972CR06, 1975CR03). See also (1974FO1J). Excitation energies from E_γ and τ_m measurements are reported in Tables 19.3 (in PDF or PS) and 19.2 (in PDF or PS), respectively (1971BR02, 1971HI06).

5. 18O(n, γ)19O

Qm = 3.957

At E_n = 0.0253 eV (ν_n = 2200 m/sec), the capture cross section is 0.16 ± 0.01 mb (1974SH1E). (1976GAYV) shows unpublished cross section data for 0.2 < E_n < 1.0 MeV. See also (1971BL05), (1973CL1E; astrophys. considerations) and (1972AJ02).

6. 18O(n, n)18O

Eb = 3.957

The coherent scattering amplitude (bound) is a = 6.00 ± 0.13 fm (1973MU14). The total cross section measured for E_n = 0.14 to 2.47 MeV shows four resonances at E_n = 0.66, 1.19, 1.26, 1.84 and 2.45 MeV [see Table 19.4 (in PDF or PS)] in addition to a broad maximum at E_n = 1.6 MeV and resonance structure near 2.3 MeV (1965VA03). A phase shift analysis by (1964DO08, 1973DO05) is consistent with the (1965VA03) results and suggests that the two broad structures can each be accounted for in terms of two levels whose parameters are displayed in Table 19.4 (in PDF or PS). At higher energies [E_n = 2.82 to 4.17 MeV (1959SC30), 2.45 to 8.50 MeV and 10.6 to 19.0 MeV (1965SA24)] the total cross section shows additional structures. See also (1973MU14, 1976GAYV).

7. 18O(n, p)18N

Qm = -13.27

Eb = 3.957

See (1972ED01).

8. 18O(n, d)17N

Qm = -13.717

Eb = 3.957

See (1964AM02).

9. 18O(n, α)15C

Qm = -5.010

Eb = 3.957

The total cross sections for the α₀ and α₁ groups have been measured for E_n = 7.5 to 8.6 MeV: resonance structure is reported at E_n = 7.70 ± 0.05 and 8.05 ± 0.05 MeV with Γ_lab = 0.25 and 0.35 MeV, respectively [¹⁹O*(11.25, 11.58)] (1967ST28).

10. 18O(d, p)19O

Qm = 1.732

Angular distributions of proton groups have been measured at E_d = 0.8 MeV to 15 MeV: see (1972AJ02) for the earlier work and (1972FA19; 3 MeV; p₀, p₁, p₂), (1974SE01; E_d-bar = 14.8 MeV; see Table 19.3 (in PDF or PS)). The l_n values and spectroscopic factors derived from these measurements are displayed in Table 19.3 (in PDF or PS). See also (1973ST1B, 1975ST1P).

Branching ratios are shown in Table 19.5 (in PDF or PS) and τ_m measurements in Table 19.2 (in PDF or PS). ¹⁹O*(0.096) has g = -0.48 ± 0.06; its configuration appears to be mainly d³_5/2 and B(M1) = (0.040 ± 0.015)μ²_n (1976GO09). The ΔE value for the 1.47 → 0.096 transition is 1375.3 ± 0.5 keV. Assuming E_x = 96.0 ± 0.5 keV (Table 19.1 (in PDF or PS)), E_x = 1471.4 ± 0.7 keV (1973WA10). Angular correlations are consistent with J^π = 5/2⁺ for the ground state and unambiguously fix J^π = 3/2⁺ and 1/2⁺, respectively, for ¹⁹O*(0.096, 1.47) (1965AL13). They also suggest J = 9/2 for ¹⁹O*(2.37) and 7/2⁺ for ¹⁹O*(2.78) (1971HI06). (1976SO08) find J = 5/2, 7/2 or 9/2, 3/2 or 7/2; and 3/2 or 5/2 for ¹⁹O*(2.37, 2.78, 3.15). See also (1974FO1J, 1976DA1K), (1973DO02; theor.) and ²⁰F.

11. (a) 18O(t, d)19O	Qm = -2.300
(b) 18O(α, 3He)19O	Qm = -16.621

Not reported.

12. (a) 18O(13C, 12C)19O	Qm = -0.989
(b) 18O(14C, 13C)19O	Qm = -4.219
(c) 18O(17O, 16O)19O	Qm = -0.186
(d) 18O(18O, 17O)19O	Qm = -4.087

For reaction (a) see (1971BA68, 1974CH1Q, 1976DU04). For reactions (b) and (d) see (1972EY01). The angular distribution for reaction (c) has been measured at E_cm = 18.52 MeV (1977KA2E; to ¹⁹O*(0, 1.47)): ¹⁰O*(1.47) is populated predominantly by a 1n transfer. The rms radius of the neutron excess distributions is 3.30 ± 0.05 fm (1976DU04).

13. 19N(β-)19O

Qm = 12.48

A report by (1974GU19) regarding delayed neutrons from ¹⁹O following the presumed β-decay of ¹⁹N is incorrect: see (1976FI03). See also ¹⁹N.

14. 19F(n, p)19O

Qm = -4.036

Angular distributions have been reported at E_n = 14.1 and 14.4 MeV for the p₀ → p₂ groups: see (1972AJ02) and ²⁰F.

15. (a) 19F(t, 3He)19O	Qm = -4.800
(b) 21Ne(n, 3He)19O	Qm = -15.924
(c) 22Ne(n, α)19O	Qm = -5.711

These reactions have not been reported.