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Measurements of Energy Dependence of Average Number of Prompt Neutrons from Neutron-Induced Fission of 235U, 241Am and 243Am From 0.5 to 12 MeV

  • Yu. A. Khokhlov
  • I. A. Ivanin
  • Yu. I. Vinogradov
  • V. I. In’kov
  • L. D. Danilin
  • V. I. Panin
  • V. N. Polynov
Conference paper
Part of the Research Reports in Physics book series (RESREPORTS)

Abstract

The energy dependence measurements results of average number of prompt neutrons from neutron-induced fission of 235U, 241Am, 243Am and total gamma-rays energy for 235U and 243Am from 0.5 to 12 MeV are presented. The measurements were carried out with neutron beam from uranium target of electron linac of All-Union Scientific Research Institute of Experimental Physics using time-of-flight technique on 28.5m flight-path. The neutrons and gamma-rays from fission were detected by a big liquid scintillator detector (BLSD) loaded with gadolinium, events of fission — by parallel plate avalanche detector for fission fragments. Measurements of energy dependence of \( {{\bar{v}}_{p}} \), Eγtot and determination of BLSD efficiency (relative to \( {{\bar{v}}_{p}} \) and Eγtot for 252Cf ) were carried out simultaneously. Least squares fitting results give \( {{\bar{v}}_{p}}{\mkern 1mu} {\mkern 1mu} = {\mkern 1mu} {\mkern 1mu} 3.05{\mkern 1mu} {\mkern 1mu} + {\mkern 1mu} {\mkern 1mu} 0.14^\circ {\mkern 1mu} En \) for 241Am and \( {{\bar{v}}_{p}}{\mkern 1mu} {\mkern 1mu} = {\mkern 1mu} {\mkern 1mu} 3.20{\mkern 1mu} {\mkern 1mu} + {\mkern 1mu} {\mkern 1mu} 0.15^\circ {\mkern 1mu} En \) for 243Am.

Keywords

Electron Linac fast neutrons time-of-flight method fission prompt neutrons parallel plate avalanche detector liquid scintillator detector 235241Am 243Am 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • Yu. A. Khokhlov
    • 1
  • I. A. Ivanin
    • 1
  • Yu. I. Vinogradov
    • 1
  • V. I. In’kov
    • 1
  • L. D. Danilin
    • 1
  • V. I. Panin
    • 1
  • V. N. Polynov
    • 1
  1. 1.All-Union Scientific Research Institute of Experimental PhysicsArzamas-16, Nizhnij Novgorod regionUSSR

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