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FPN-BN, solution and single integral formulation of the BFP equation for neutral and charged particles in ICF reactors

 

作者: M. d'Amico,   F. Premuda,  

 

期刊: Transport Theory and Statistical Physics  (Taylor Available online 1997)
卷期: Volume 26, issue 6  

页码: 679-704

 

ISSN:0041-1450

 

年代: 1997

 

DOI:10.1080/00411459708229330

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

In order to develop ICF reactors a model is needed for the anisotropic transport of neutral and charged particles inside a high density hot plasma generated at the centre of a DT pellet by a laser-driven implosion. Two BFF equations in cascade for the F-transformed angular flux(0) (B, E, μ), unperturbed by the continuous deviation tern, and for its correction(1) (B, E, μ), talcing this effect into account, are solved via FPN-BNmethod, once an appropriate closed-form, but of infinite anisotropy order, expression is found for(0) (B, E, μ). The introduction of suitably generalized F-transformed kernel functions, with respect to the classical ones for usual anisotropic transport integral formulation, and of projections, of both FPNand BNequations, onto a suitable sequence of Paley-Wiener spaces, leads finally to FPNrecurrences reducing the two first BNequations to a couple of F-transformed integral equations for the zero-th order moments only of the two unknowns, talcing nevertheless into account the whole flux and scattering anisotropy of the problem. Finally easily computable polynomial series expansions, of such zero-th order moments of the unknowns, with Fourier coefficients solving appropriate infinite algebraic linear systems, are derived, once appropriate relations are found, between boundary angular flux moments, substantially correspondent to the boundary conditions for the problem.

 

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