Absolute thermal neutron fluence determination by thin film of natural uranium

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 352; no. 3; pp. 588 - 591
• Main Authors: Bigazzi, G., Hadler N., J.C., Iunes, P.J., Oddone, M., Paulo, S.R., Zúñiga G., A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 1995
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/0168-9002(95)90010-1

An absolute monitor of thermal neutron fluence based on the
235U induced fission was developed. This monitor is constituted by a solid state nuclear track detector juxtaposed to a natural uranium film with a negligible self-absorption to fission fragments. In order to perform the calibration of the films, the alpha-activity was measured by using nuclear emulsions. The preparation, calibration and employment procedures of this monitor are presented.