Fission-γ-Ray Coincidence Studies of ^238U Neutron-Induced Fission in the Range 1 < En < 200 MeV

Details Fission-γ-Ray Coincidence Studies of ^238U Neutron-Induced Fission in the Range 1 < En < 200 MeV Fission-γ-Ray Coincidence Studies of ^238U Neutron-Induced Fission in the Range 1 < En < 200 MeV

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apre13008n&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

Studies of prompt fission-γ-ray coincidences are being carried out using the high-resolution γ-ray detector array GEANIE at the WNR broad-spectrum neutron source at LANSCE. Thin Si solar cells with thin ^238U deposits are used to detect fission products in coincidence with their de-excitation γ rays. Low-energy γ rays and x-rays are detected with planar Ge detectors. Higher-energy γ rays are detected with coaxial Ge detectors. Incident neutron energies are determined by the time-of-flight technique. Recent measurements have recorded both x-rays and γ rays from fission products with a goal of extracting charge and mass distributions. The average total energy released as γ rays from the de-excitation of the fission products can be determined by deconvolution of the fission-γ-ray spectra. Examining the emitted-γ-ray energy as a function of incident-neutron energy provides insight into the evolution of the excitation of the fission products. Preliminary results of these studies and plans for further work will be presented.

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