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Initial conceptual design study of self-critical nuclear pumped laser systemsAn analytical study of self-critical nuclear pumped laser system concepts was performed. Primary emphasis was placed on reactor concepts employing gaseous uranium hexafluoride (UF6) as the fissionable material. Relationships were developed between the key reactor design parameters including reactor power level, critical mass, neutron flux level, reactor size, operating pressure, and UF6 optical properties. The results were used to select a reference conceptual laser system configuration. In the reference configuration, the 3.2 m cubed lasing volume is surrounded by a graphite internal moderator and a region of heavy water. Results of neutronics calculations yield a critical mass of 4.9 U(235) in the form (235)UF6. The configuration appears capable of operating in a continuous steady-state mode. The average gas temperature in the core is 600 K and the UF6 partial pressure within the lasing volume is 0.34 atm.
Document ID
19790014704
Document Type
Contractor Report (CR)
Authors
Rodgers, R. J. (United Technologies Research Center East Hartford, CT, United States)
Date Acquired
September 3, 2013
Publication Date
April 1, 1979
Subject Category
NUCLEAR AND HIGH-ENERGY PHYSICS
Report/Patent Number
NASA-CR-3128
Funding Number(s)
CONTRACT_GRANT: NAS1-14329
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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