Further Investigation of Spectral Temperature Feedbacks

Conference · Sun Nov 16 04:00:00 EST 1997

OSTI ID:292843

Kornreich, Drew E. ^[1]

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1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

This paper serves two purposes: (1) to introduce some new calculations of the temperature coefficients for uranium solutions, and (2) to examine some simplified calculations based on earlier work. Uranium solutions, while never having positive temperature coefficients, show trends in the feedback coefficient as a function of solution concentration that are similar to those seen for plutonium solutions. For both the plutonium and uranium solutions, the feedback coefficient experiences a local minimum near the over/under moderation transition point. The earlier work on the simplified calculations is expanded to include better treatment of cross sections and to include strict numerical integration techniques.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 292843
• Report Number(s): LA-UR--97-2211; CONF-971125--; ON: DE97008622
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
42 ENGINEERING
ALGORITHMS
AQUEOUS SOLUTIONS
CRITICALITY
Calculations
FISSILE MATERIALS
MULTIPLICATION FACTORS
Nuclear Criticality Safety Program (NCSP)
RADIOACTIVE WASTE DISPOSAL
TEMPERATURE COEFFICIENT
TEMPERATURE DEPENDENCE
URANIUM