ISSN: 1546-962X
Page Count: 8

Proton Induced Activation in Mercury: Comparison of Measurements and Calculations
Remec, I
S&T Staff Member, Oak Ridge National Laboratory, TN

Glasgow, DC
Research Staff Member, Oak Ridge National Laboratory, TN

Haines, JR
SNS EDF Target Group System Group Member, Oak Ridge National Laboratory, TN

Johnson, JO
Group Leader, Oak Ridge National Laboratory, TN

(Received 20 June 2005; accepted 19 April 2006)

Abstract

Measurements and simulations of the proton beam interaction with the mercury target were performed to support Spallation Neutron Source design. Due to the abundance of isotopes produced in mercury, the long delay between the irradiation and the measurements, and the self-shielding of the mercury sample, the measurements were difficult to perform and the activities of several isotopes have large uncertainties. Calculations predicted the activities of the most reliably measured isotopes within 20%–40%; however, some large discrepancies were observed for some isotopes for which the measurements were considered less reliable. Predicted dose rates were in very good agreement with the measurements.

Keywords:
proton beam, mercury, activation, MCNPX, gamma rays, dose rate

Paper ID: JAI13469
DOI: 10.1520/JAI13469
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