
^{17}N (1977AJ02)(See Energy Level Diagrams for ^{17}N) GENERAL: See also (1971AJ02) and Table 17.1 [Table of Energy Levels] (in PDF or PS). Theory and reviews: (1973PA1F, 1973RE17, 1973TO16, 1973WI15, 1974HA61, 1975BE31). Experimental papers: (1971AR02, 1973KO1D, 1976DE1P).
The halflife of ^{17}N is 4.169 ± 0.008 sec (1972AL42): the mean of earlier values (see (1971AJ02)) was 4.16 ± 0.01 sec. See also (1976FI03). The decay is principally [see Table 17.2 (in PDF or PS)] to the neutron unbound states ^{17}O*(4.55, 5.38, 5.94) [J^{π} = 3/2^{}, 3/2^{} and 1/2^{}, respectively]. The nature of the decay is in agreement with J^{π} = 1/2^{} for ^{17}N_{g.s.} (1973PO11, 1976AL02). For measurements of the neutron energies see (1973PO11). Excitation energies of ^{17}O states have been determined by (1973PO11) from E_{n} [e.g., 4.552 ± 0.004 MeV] and by (1976AL02). From E_{γ} to the first excited state whose E_{x} was taken to be 870.8 ± 0.2 keV, E_{x} for the second excited state of ^{17}O is 3055.2 ± 0.3 keV; the direct ground state decay of that state is < 1.5% (1976AL02). See also (1972SH1F) and (1972TO03; theor.). For a comparison of the ^{17}N and ^{17}Ne decays see Table 17.3 (in PDF or PS) (1976AL02): the large values of δ show the importance of final state nuclear asymmetry in oddA nuclei. See also (1972AL42).
See (1976FI03).
Proton groups and γrays have been studied by several groups: see Tables 17.4 (in PDF or PS) and 17.5 (in PDF or PS). Angular distributions of γrays, branching ratio and lifetime measurements lead to most of the J^{π} shown in these two tables; transition energies have also been very accurately determined (1974RO27, 1974RO28). See also (1971AJ02).
See (1961PE28).
See (1972EY01).
See (1971AJ02).
See ^{18}O in (1978AJ03).
See ^{18}O in (1978AJ03).
See ^{19}O in (1972AJ02).
Angular distributions of eight ^{3}He groups have been measured at E_{d} = 52 MeV; see Table 17.4 (in PDF or PS) (1971HA48).
Alpha particle groups corresponding to ^{17}N states with E_{x} < 4.3 MeV have been studied by (1960JA13): see Table 17.3 (in PDF or PS) in (1971AJ02). (1976GU14: E_{t} = 3.5 MeV) have studied α  γ angular correlations and γbranching ratios for the first six excited states of ^{17}N: see Tables 17.4 (in PDF or PS) and 17.5 (in PDF or PS).
