Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Neutron Irradiation in Activation Analysis: A New Rabbit for the NBSR



Richard M. Lindstrom, Rolf L. Zeisler, Elizabeth A. Mackey, P J. Liposky, Rachel S. Popelka-Filcoff, Robert E. Williams


Elementary activation analysis assumes that the reaction rate is proportional to the number of atoms of analyte present in the sample. On close examination, this is not always true, even within a set of samples irradiated together. For accurate analysis, it is necessary to consider neutron flux gradients in three dimensions, neutron self-shielding, and sometimes changes in neutron spectrum by the sample. Gamma radiation from the reactor core and from neutron activation raises the temperature, induces recoil reactions, and otherwise degrades the sample and its container. These issues are all important in the design and experimental characterization of irradiation facilities, as exemplified in the installation of a new rabbit facility in the NIST reactor.
Journal of Radioanalytical and Nuclear Chemistry


epithermal neutrons, fluence measurement, neutron actiation analysis, neutron irradiation, reactor characterization, thermal neutrons


Lindstrom, R. , Zeisler, R. , Mackey, E. , Liposky, P. , Popelka-Filcoff, R. and Williams, R. (2008), Neutron Irradiation in Activation Analysis: A New Rabbit for the NBSR, Journal of Radioanalytical and Nuclear Chemistry (Accessed April 25, 2024)
Created October 16, 2008