Experimental information on mass- and TKE-dependence of the prompt fission γ-ray multiplicity

Abstract

Prompt γ rays from the spontaneous fission of 252Cf were measured with cerium-doped LaBr3 detectors. The average prompt fission γ-ray multiplicity, Mγ, was determined as a function of fragment mass number (A) and total kinetic energy (TKE). High-statistics data, obtained from three detectors of different size at different angles relative to the fission chamber, confirms unequivocally a saw-tooth like shape of the γ multiplicity as a function of fragment mass, in contrast to previously published data. In addition, the TKE-dependence of Mγ was determined experimentally and compared with recent data.

Keywords

• Prompt fission γ rays
• γ multiplicity
• Mass-dependent γ-ray emission
• Mγ(A)
• Total kinetic energy (TKE)
• ν‾(A)