Accession Number : AD0736841

Title :   An Experimental Technique for Investigating Spontaneously Fissioning Isomers.

Descriptive Note : Memorandum rept.,

Corporate Author : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : Temperley,J. K. ; Morrissey,J. A. ; Bacharach,S. L.

Report Date : DEC 1971

Pagination or Media Count : 28

Abstract : An experimental technique has been developed for investigating spontaneously fissioning isomers with half-lives about = or > 100 nsec. The technique uses four surface barrier fission detectors in a parallel configuration. The detectors are shielded from prompt fission events and observe fission fragments from events occurring at a catcher foil which collects heavy nuclei recoiling out of the target. The flexibility of the technique is demonstrated by reporting an experiment in which the half-lives, relative excitation energies, and single-fragment kinetic energy distributions of spontaneously fissioning isomers in 237Pu were determined. (Author)

Descriptors :   (*NUCLEAR ISOMERS, *FISSION), PLUTONIUM, NEUTRON REACTIONS, FISSION PRODUCTS, NEUTRON CROSS SECTIONS, GRAPHICS

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE