Measurements of double-differential neutron emission cross sections of 6Li, 7Li and 9Be for 11.5 MeV and 18.0 MeV Neutrons

Masanobu Ibaraki, Mamoru Baba, Shigeo Matsuyama, Toshiya Sanami, Than Win, Takako Miura, Naohiro Hirakawa

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15 Citations (Scopus)

Abstract

Double-differential neutron emission cross sections (DDXs) of 6Li, 7Li and 9Be were measured for 18.0 MeV and 11.5 MeV incident neutrons produced by the T(d, n) and 15N(d, n) reactions respectively, using the Tohoku University Dynamitron time-of-flight (TOF) spectrometer. The data were obtained at 13 laboratory angles, and angular-differential cross sections (ADXs) of elastic and inelastic scattering neutrons were derived from the DDXs. For 11.5 MeV neutrons, we obtained the neutron emission spectra over the secondary neutron energies by newly employing the double TOF method as well as the conventional one. In the measurements at 18.0 MeV, we achieved better energy resolution than in our previous studies by using a neutron detector that has a larger solid angle and a thinner tritium target. The experimental results of DDXs and ADXs were compared with our previous results and the evaluated data given in JENDL-3.2, JENDL Fusion File and ENDF/B-VI. It is found that the JENDL data reproduce the experimental ones very well.

Original languageEnglish
Pages (from-to)843-850
Number of pages8
Journaljournal of nuclear science and technology
Volume35
Issue number12
DOIs
Publication statusPublished - 1998 Dec

Keywords

  • Angular distribution
  • Beryllium 9
  • Comparative evaluations
  • Continuum spectra
  • Double-differential CMSS sections
  • Experimental data
  • High energy resolution
  • Lithium 6
  • Lithium 7
  • MeV range 10-100
  • Neutron emission
  • Time-of-flight method

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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