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Partialγ-Ray Cross Sections for the Reaction239Pu(n,2nγi) and the239Pu(n,2n) Cross Section
- Source :
- Journal of Nuclear Science and Technology. 39:620-625
- Publication Year :
- 2002
- Publisher :
- Informa UK Limited, 2002.
-
Abstract
- Absolute partial γ-ray cross sections for discrete γ-ray production in the 239Pu(n,2nγi)238Pu reaction have been measured. The experiments were performed at LANSCE/WNR on the 60R neutron flight path. Reaction γ-rays were measured using the large-scale Compton-suppressed array of Ge detectors, GEANIE. The motivation for this experiment, an overview of the partial γ-ray cross-section measurement, and an introduction to the main experimental issues will be presented. The energy resolution of the Ge detectors allowed identification of reaction γ rays above the background of sample radioactivity and fission γ rays. The use of planar Ge detectors with their reduced sensitivity to neutron interactions and improved line shape was also important to the success of this experiment. Absolute partial γ-ray cross sections are presented for the 61+ → 41+ member of the ground state rotational band in 238Pu, together with miscellaneous other γ-ray partial cross sections. The n,2n reaction cross section shape and magnitude...
- Subjects :
- Nuclear and High Energy Physics
Fission
Chemistry
Astrophysics::High Energy Astrophysical Phenomena
Resolution (electron density)
Nuclear physics
Cross section (physics)
Planar
Nuclear Energy and Engineering
Neutron
Nuclear cross section
Atomic physics
Nuclear Experiment
Ground state
Line (formation)
Subjects
Details
- ISSN :
- 18811248 and 00223131
- Volume :
- 39
- Database :
- OpenAIRE
- Journal :
- Journal of Nuclear Science and Technology
- Accession number :
- edsair.doi...........fcd5bfe67479b13af735254637572015