| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1824855 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2011 | 8 Pages |
Abstract
A neutron counter designed for assay of radioactive materials has been adapted for beam experiments at TUNL. The cylindrical geometry and 60% maximum efficiency make it well suited for (γ,nγ,n) cross-section measurements near the neutron emission threshold. A high precision characterization of the counter has been made using neutrons from several sources. Using a combination of measurements and simulations, the absolute detection efficiency of the neutron counter was determined to an accuracy of ±3% in the neutron energy range between 0.1 and 1 MeV. It is shown that this efficiency characterization is generally valid for a wide range of targets.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
C.W. Arnold, T.B. Clegg, H.J. Karwowski, G.C. Rich, J.R. Tompkins, C.R. Howell,