Energy dependence of pulse height defect with fission fragments in a silicon surface barrier detector

Abstract

Pulse height defect of a surface barrier detector for fission fragments was estimated for each energy respectively. The pulse height defect was obtained from comparison between an integrated curve of a fragment energy spectrum after prompt neutron emission and an integrated curve measured by the surface barrier detector. A discontinuity of pulse height defect was found between the heavy and the light fragment groups. For the heavy fragment group, the pulse height defect has linear relationship with fragment energy. While, for the light fragment group, the pulse height defect increases drastically at the high energy region and no linear relationship has been observed.