Analysis of the Energy Dependence of the Isomer Ratio in theReaction
- 1 February 1963
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 129 (3), 1302-1307
- https://doi.org/10.1103/physrev.129.1302
Abstract
The method of Huizenga and Vandenbosch for calculating isomer ratios has been extended to reactions that constitute a small fraction of the total cross section. In particular, the method determines the effective distribution in for emission of particles brought about by competition between the emission of neutrons and particles . The method is then applied to the reaction , and values of , the parameter that characterizes the spin distribution, are extracted by comparison with experiment. The values of obtained for proton bombarding energies of 12 and 18 MeV are 2.7 and 4.2, respectively, and do not depend strongly upon the value of chosen for the neutron evaporation, but do depend strongly upon the fractional amount of direct interaction assumed. Similar values for are obtained when competition is not considered. The energy dependence of is discussed in the light of present theory.
Keywords
This publication has 12 references indexed in Scilit:
- Cross Sections for Formation of the Isomeric Pair and in the ReactionPhysical Review B, 1963
- Spectra of () and () Reactions and the Evaporation ModelPhysical Review B, 1961
- Photoalpha Reaction inSb121Physical Review B, 1961
- Interpretation of Isomeric Cross-Section Ratios for () and () ReactionsPhysical Review B, 1960
- () Reactions Induced by Protons in the Energy Range of 9.5-23 MevPhysical Review B, 1960
- () Reactions Induced by 23-Mev ProtonsPhysical Review B, 1958
- Theory of Nuclear Level DensityPhysical Review B, 1954
- The Inelastic Scattering of NeutronsPhysical Review B, 1952
- Conservation of Angular Momentum in the Statistical Theory of Nuclear ReactionsPhysical Review B, 1951
- Nuclear Physics B. Nuclear Dynamics, TheoreticalReviews of Modern Physics, 1937