Energy dependence of isospin mixing in compound-statistical reactions
- 1 June 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 9 (6), 2171-2180
- https://doi.org/10.1103/physrevc.9.2171
Abstract
The compound nucleus was formed at excitation energies ranging from 17 to 22 MeV in the reactions and and energy spectra of the emitted protons and particles were measured between 30 and 150°. The extent of isospin mixing between the and states of the compound nucleus was determined by comparison of the quantity with theory and the fractional mixing was found to increase from 0 to 0.3 over the above energy range. The mixing width shows a corresponding increase from 0.2 to 16 keV. The independence hypothesis was verified at all energies by measurements of the and exit channels. The various spectra were compared with the spin-dependent statistical theory. It was not possible to fit the data for various energies with energy-independent parameters in the Fermi gas model level density expression suggesting that this expression is inadequate.
Keywords
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