New Approaches To Nuclear Level Densities Through Particle Emission Measurements
- Los Alamos Neutron Science Center, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)
With the intense spallation neutron source at the Los Alamos Neutron Science Center (LANSCE), new approaches to nuclear level densities are being explored through neutron-induced reactions and measurements of the resultant particle emission. This continuous-in-energy neutron source has been used to study Ericson fluctuations, charged-particle emission cross sections and spectra, gamma-ray production and, recently, neutron emission. Examples of each will be discussed. The FIGARO array of neutron and gamma-ray detectors has been developed in the past year to allow measurement of neutron emission in a 'double time-of-flight' experiment. The incident neutron energy is determined by time-of-flight over a 21-meter flight path with gamma rays from the induced reaction. Neutron emission spectra from this reaction are then measured by time-of-flight over a flight path of typically 1 meter. Data on 28Si(n,n') are presented, and the relevance to determination of nuclear level densities is discussed.
- OSTI ID:
- 20632587
- Journal Information:
- AIP Conference Proceedings, Vol. 680, Issue 1; Conference: 17. international conference on the application of accelerators in research and industry, Denton, TX (United States), 12-16 Nov 2002; Other Information: DOI: 10.1063/1.1619723; (c) 2003 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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