학술논문
Measurements of the Prompt Fission Neutron Spectrum at LANSCE: The Chi-Nu Experiment.
Document Type
Article
Author
Köster, U.; Kelly, Keegan J.; Devlin, Matthew; Gomez, Jaime A.; O'Donnell, John M.; Taddeucci, Terry N.; Haight, Robert C.; Lee, Hye Young; Mosby, Shea M.; Fotiades, Nikolaos; Neudecker, Denise; Talou, Patrick; Rising, Michael E.; White, Morgan C.; Solomon, Clell J.; Wu, Ching-Yen; Bucher, Brian; Buckner, Matthew Q.; Henderson, Roger A.
Source
Subject
*NUCLEAR fission
*NEUTRON spectroscopy
*ACTINIDE elements
*NEUTRON sources
*MOLECULAR interactions
*
*
*
*
Language
ISSN
2101-6275
Abstract
The goal of the Chi-Nu experiment at the Los Alamos Neutron Science Center is to measure the prompt fission neutron spectra from major actinides using a double time-of-flight method with a pulsed, white incoming neutron source. Fission events are detected with a parallel-plate avalanche counter and outgoing neutrons are detected with either a 6Li-glass or liquid scintillator detector array for low- or high-energy neutrons, respectively. A detector response matrix for the interaction of neutrons with the experimental environment for neutrons measured with the Chi-Nu 6Li-glass detector array has been calculated to obtain a full understanding of the measured Chi-Nu data and also to allow for nearly instantaneous production of simulated Chi-Nu data spectra. Prompt fission neutron spectra corresponding to 19 incoming neutron energy ranges from 0.7-20 MeV have been extracted using the ratio-of-ratios method with Chi-Nu 6Li-glass data on the neutron-induced fission of 235U. [ABSTRACT FROM AUTHOR]