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A set of efficiencies and response functions for 18 gamma rays in the range from 0.2 to 8.4 MeV has been determined experimentally via a (p, gamma) coincidence method for a neutron capture detection setup. This consists of two cylindrical deuterated hexabenzene liquid scintillators placed symmetrically and normally with respect to the beam and operated in sum mode. A pulse-height weighting function is derived from this data set and applied to the measurement of neutron capture in the 1.15 keV resonance of 56Fe relative to capture in the 5.2 eV resonance of 109 Ag. A value of T(n) = 62.9 +/- 2.1 meV is obtained for the neutron width, in good agreement with the value of T(n) = 61.7 +/- 0.9 meV from transmission measurements. The extension of the validity of this weighting function to samples of different thickness and composition is discussed.

Additional information

Authors: CORVI F, JRC Geel (BE);FIONI G, JRC Geel (BE);GASPERINI F, JRC Geel (BE);SMITH P B, University of Groningen (NL)
Bibliographic Reference: Article: Nuclear Science and Engineering, Vol. 107 (1991) pp. 272-283
Record Number: 199210431 / Last updated on: 1994-12-02
Original language: en
Available languages: en