Improved nuclear level densities via identification of spurious levels.
- Christen M.
An accurate value of the nuclear resonance spacing is crucial for determination of level densities. Level densities are key input for the calculation of nuclear reaction rates and cross sections. This paper discusses various effects that can adversely impact the average level spacing, with a special emphasis on the issue of quantum number assignment. The most striking property of spacings of resonances with the same quantum number is level repulsion. We investigate how a simple test based on level repulsion can be used in the identification of spin misassingment and provide new experimental verification of the proposed test. Proton resonances obtained in the {sup 44}Ca+p reaction are used as an example. In addition, s-wave neutron resonances in the {sup 238}U+n reaction are considered.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 977880
- Report Number(s):
- LA-UR-04-6889; TRN: US1003750
- Resource Relation:
- Journal Volume: 769; Conference: Submitted to: International Conference On Nuclear Data for Science and Technology, Santa Fe, NM, Sept. 27 - Oct. 1, 2004
- Country of Publication:
- United States
- Language:
- English
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