High-power, pulsed bremsstrahlung source for inducing photofission

D D Hinshelwood,R J Allen,J P Apruzese,R J Commisso,G Cooperstein,S L Jackson,D Mosher,D P Murphy,P F Ottinger,J W Schumer,S B Swanekamp,B V Weber,F C Young,J C Zier,A W Hunt,Zephne Larsen, E S Cardenas,A N Caruso

Pulsed Power Conference（2011）

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摘要

This paper describes the use of intense, pulsed bremsstrahlung for inducing photofission in fissionable material. 8-MV bremsstrahlung triggers photofission in depleted uranium (DU). Particle-in-cell and Monte-Carlo codes model the source, gamma and neutron production and transport, and detector response. A variety of detectors have been fielded successfully to measure fission in DU from delayed-neutron, delayed-gamma, and prompt-neutron signals. This work represents the first clean measurement of prompt photofission neutrons in an intense, pulsed-power environment.

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关键词

monte carlo methods,bremsstrahlung,fission of uranium,gamma-ray production,neutron detection,neutron production,photofission,monte-carlo code model,delayed-gamma signals,delayed-neutron signals,depleted uranium analysis,detector response,fissionable material,gamma production,high-power pulsed bremsstrahlung source,intense pulsed bremsstrahlung,intense pulsed-power environment,neutron transport response,particle-in-cell code model,prompt photofission neutron measurement,prompt-neutron signals,voltage 8 mv,depleted uranium,monte carlo,particle in cell

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