Neutron resonance spectroscopy: Chlorine
Abstract
Results are presented of time of flight total σ vs E measurements for natural Cl to 400 keV. Resonance parameters were obtained for 35 resonances below 200 keV. Of these, 12 resonances were assigned to 35Cl, 6 to 37Cl, with 17 weak resonances for which isotope assignments could not be made. On the basis of our assignments as s or p resonances, 104S0=(0.12+0.23-0.07) for 35Cl and (0.59+0.66-0.28) for 37Cl. For 35Cl, 104S1=(0.77+0.53-0.29) with no S1 determination for 37Cl. The anomalous behavior of σ vs E below ~ 1000 eV for natural Cl, along with previously established thermal cross sections, are fitted by assigning a bound resonance in 35Cl at - 130 eV, having l=0, J=2, Γ0n=0.725 eV, and Γγ=0.378 eV. NUCLEAR REACTIONS 35,37Cl(n,n), (n,γ), E=20eV-400keV; measured σt(E) deduced E0, agΓn, l, J, S0, S1.
- Publication:
-
Physical Review C
- Pub Date:
- December 1974
- DOI:
- 10.1103/PhysRevC.10.2138
- Bibcode:
- 1974PhRvC..10.2138S