DocumentCode :
323168
Title :
Accurate determination of thermal neutron flux via cryogenic calorimetry
Author :
Richardson, J.M. ; Snow, W.M. ; Chowdhuri, Z. ; Greene, G.L.
Author_Institution :
Sci. Res. Lab., Cambridge, MA, USA
fYear :
1997
fDate :
9-15 Nov 1997
Firstpage :
135
Abstract :
Absolute determination of thermal neutron flux is an important capability for several applications including neutron dosimetry, analytical chemistry, oil recovery, nuclear waste clean-up, and the determination of the neutron lifetime. Few methods exist that are calibrated to better than ~0.5% accuracy. As a corollary to this statement, it is also true that few thermal neutron absorption cross sections are known to better than ~0.5% accuracy. Several groups, including one at the National Institute of Standards and Technology (NIST) have worked for many years to develop methods for pushing the accuracy below the 0.1% level. This paper describes a calorimetric technique which avoids many of the problems associated with absolute counting methods. A description of the calorimetric method and results of system tests will be presented
Keywords :
calorimetry; cryogenics; neutron detection; neutron flux; analytical chemistry; cryogenic calorimetry; neutron dosimetry; neutron lifetime; nuclear waste; oil recovery; thermal neutron absorption cross sections; thermal neutron flux; Absorption; Calorimetry; Chemistry; Cryogenics; Detectors; Dosimetry; Laboratories; NIST; Neutrons; Petroleum;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium, 1997. IEEE
Conference_Location :
Albuquerque, NM
ISSN :
1082-3654
Print_ISBN :
0-7803-4258-5
Type :
conf
DOI :
10.1109/NSSMIC.1997.672532
Filename :
672532
Link To Document :
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