CALIBRATION OF A LI-GLASS DETECTOR FOR NEUTRON ENERGIES ABOVE 50-KEV BY THE H-1(T,N) HE-3-REACTION

Authors
DROSG M DRAKE DM MASARIK J
Citation
M. Drosg et al., CALIBRATION OF A LI-GLASS DETECTOR FOR NEUTRON ENERGIES ABOVE 50-KEV BY THE H-1(T,N) HE-3-REACTION, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 94(3), 1994, pp. 319-324
Citations number
16
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
94
Issue
3
Year of publication
1994
Pages
319 - 324
Database
ISI
SICI code
0168-583X(1994)94:3<319:COALDF>2.0.ZU;2-O
Abstract
The low energy group of the neutron source H-1(t,n)He-3 was used to ge nerate absolute fluxes of monoenergetic neutrons in the tens of keV ra nge. This way the absolute counting efficiency of a Li-glass detector was determined in this rather difficult energy range in a straightforw ard way. Whereas the efficiency for neutrons with energies below about 2.3 MeV reflects the Li-6(n,t)He-4 cross section, contributions of (n ,n'gamma) reactions which are strongly dependent on the pulse-height t hreshold are observed above that energy. The use of compiled Li-6(n,t) He-4 cross sections to predict the efficiency is discussed.