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 /spl sim/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 /spl sim/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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
