SYMPOSIA PAPER Published: 01 January 2007
STP45425S

Characterizing the Time- and Energy-Dependent Reactor /γ Environment

Source

In a reactor pulse, the early radiation has a neutron/gamma component resulting from the prompt fission neutron and gamma radiation and from the neutron-induced secondary gammas. However, after the primary reactor pulse, the radiation environment also includes a time-dependent delayed neutron and gamma component. At even later times, the material activation dominates the source term. When active tests are conducted in the reactor, the radiation environment at a particular time may not be well characterized by the time-integrated spectrum provided by the typical radiation transport calculations. This paper defines the steps that are required to adequately model the time- and energy-dependent radiation environment in the reactor environment. This paper also compares the time-dependent response from a range of active dosimeters in a reactor pulsed environment and shows how the n/γ mixed-field response for the dosimeters and the changing radiation field can influence the interpretation of the dosimetry.

Author Information

Griffin, Patrick, J.
Applied Nuclear Technologies, Sandia National Laboratories, Albuquerque, NM
Luker, S., Michael
Applied Nuclear Technologies, Sandia National Laboratories, Albuquerque, NM
King, Donald, B.
Advanced Nuclear Concepts, Sandia National Laboratories, Albuquerque, NM
DePriest, K., Russell
Applied Nuclear Technologies, Sandia National Laboratories, Albuquerque, NM
Cooper, Philip, J.
Applied Nuclear Technologies, Sandia National Laboratories, Albuquerque, NM
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Details
Developed by Committee: E10
Pages: 43–54
DOI: 10.1520/STP45425S
ISBN-EB: 978-0-8031-6242-6
ISBN-13: 978-0-8031-3412-6