DocumentCode
826980
Title
Calculated and Measured Efficiency of a Man-Portable 3He Neutron Detector
Author
O´Dell, A. A.
Author_Institution
Lawrence Livermore Laboratory, University of California, Livermore, California 94550
Volume
24
Issue
1
fYear
1977
Firstpage
645
Lastpage
646
Abstract
We have constructed a small man-portable neutron detector using 18 3He proportional counters arranged in three layers within a polyethylene moderator. Each counter is 25 mm in diameter by 340 mm long (sensitive length) and is filled with highly-purified 3He to a pressure of 400 kPa (4 atm). Efficiency measurements were made using a 252Cf neutron source. Detailed calculations of the detector efficiency were done using the TART Monte Carlo transport code. Calculations and measurements were compared for several source/detector configurations.
Keywords
Counting circuits; Detectors; Helium; Laboratories; Monte Carlo methods; Neutrons; Polyethylene; Position measurement; Preamplifiers; Scattering;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/TNS.1977.4328757
Filename
4328757
Link To Document