Details

Autor(en) / Beteiligte

• Nieschmidt, E. B.
• England, A. C.
• Hendel, H. W.
• Hillis, D. L.
• Isaacson, J. A.
• Ku, L. P.
• Tsang, F. Y.

Titel

Effects of neutron energy spectrum on the efficiency calibration of epithermal neutron detectors

Ist Teil von

• Review of scientific instruments, 1985-05, Vol.56 (5), p.1084-1086

Erscheinungsjahr

1985

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The 2 3 5U epithermal neutron fission detector system at TFTR has been calibrated i n s i t u, using three different neutron sources: 2 5 2Cf, a D‐D, and a D‐T neutron generator. These sources produced a continuous spectrum, a line spectrum at ∼2.5 MeV, and a line spectrum at ∼14 MeV, respectively. The toroidally averaged detection efficiencies are 4.61×10− 9 (2 5 2Cf), 4.80×10− 9 (D‐D), and 5.42×10− 9 (D‐T) counts/neutron for a moderated 1.3‐g 2 3 5U detector placed ∼4 m from the torus centerline. The effects of (n,2n) and (n,n ’γ) reactions are discussed.