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Thermonuclear burn of DT and DD fuels using three-temperature model: Non-equilibrium effects

Published online by Cambridge University Press:  01 August 2012

Bishnupriya Nayak*
Affiliation:
Theoretical Physics Division, Bhabha Atomic Research Centre, Mumbai, India
S.V.G. Menon
Affiliation:
Theoretical Physics Division, Bhabha Atomic Research Centre, Mumbai, India
*
Address correspondence and reprint requests to: Bishnupriya Nayak, Theoretical Physics Division, Bhabha Atomic Research Centre, Mumbai-400 085, India. E-mail: [email protected]

Abstract

Conditions for thermonuclear ignition are determined by three parameters: fuel density, temperature and hot-spot size. A simple three temperature model is developed to calculate the critical burn-up parameter or the minimum ρR product. Extensive results obtained are compared with earlier one temperature model for DT and DD fuels. While the two approaches are found to provide similar results for DT fuel except at low temperature regime (~10 keV), three temperature modeling is found to be necessary for DD fuel. This is argued to be due to the lower fusion reactivity and energy production in DD reactions.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2012

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