Accession Number : AD0627026

Title :   NUCLEAR-CHARGE DISTRIBUTIONS OF SEVERAL FISSION PRODUCT MASS CHAINS,

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s) : Strom,Peter O. ; Love,Daniel L. ; Greendale,Allan E. ; Delucchi,Arnaldo A. ; Sam,Daniel

Report Date : 05 NOV 1965

Pagination or Media Count : 32

Abstract : New information on the nature of nuclear charge distribution in thermal neutron fission of 235U was obtained from measurements of fission yields of the major constituents in each of three adjacent mass chains. A regular variation in the width of the charge distribution curves with mass number was shown, and values of the most probable nuclear charge were determined. No effects attributable to the 50 proton or 82 neutron closed shells were observed in the charge distribution curves examined. Independent and cumulative fission yield values were determined for the several major constituents in each of the three mass chains 131, 132, and 133. The charge distribution curve for each mass chain was established from the fission yield data. Values of the most probable nuclear charge as given by the Gaussian curves for mass chains 131, 132 and 133 are, respectively: 50.72 plus or minus 0.07, 51.07 plus or minus 0.06, 51.59 plus or minus 0.04. Predicted effects of nuclear shells on charge distribution have been examined in light of the present data.

Descriptors :   (*NUCLEAR STRUCTURE, FISSION PRODUCTS), (*FISSION, RADIOCHEMISTRY), CHARGED PARTICLES, DISTRIBUTION, NUCLEAR SHELL MODELS, MASS NUMBER, HALF LIFE

Subject Categories : Radiation and Nuclear Chemistry
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE