Open AccessPreliminary results of a Rossi-alpha experiment in the IPEN/MB-01 research reactor
Author(s) -
Gregory D. Spriggs,
A.L.G. Carneiro,
Alfredo Abe,
Anselmo F. Miranda
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/555235
Subject(s) - research reactor , nuclear engineering , alpha (finance) , beta (programming language) , nuclear physics , physics , neutron , materials science , mathematics , statistics , computer science , engineering , construct validity , programming language , psychometrics
A preliminary set of Rossi-alpha measurements were performed on the IPEN MB-01 research reactor. The intent of the measurements was to determine if the efficiency of the BF{sub 3} detectors placed in the central region of the core was sufficiently high enough to allow an accurate measurement of the effective delayed neutron fraction, {beta}{sub eff}, and the alpha at delayed critical. In addition, a preliminary measurement of the intrinsic source strength was performed to determine the optimum external/intrinsic source strength that would allow the obtainment of sufficient counting statistics in a reasonable length of time without degrading the signal-to-noise ratio