Advances in Nuclear Science and Technology by V. Protopopescu (auth.), Jeffery Lewins, Martin Becker

By V. Protopopescu (auth.), Jeffery Lewins, Martin Becker (eds.)

Dur prior quantity 14 was once dedicated to an exposition of the subjects of sensitivity research and uncertainty concept with its improvement and alertness in nuclear reactor physics on the center of the dialogue. during this quantity, we go back to our widely used structure as a variety of subject matters of present curiosity, authored by means of these operating within the box. those issues variety from the theoretical underpinnings of the (linear) Boltzmann delivery equation to a resume of our ex­ pectations in what nonetheless could be regarded as twenty-first century know-how, the world's fusion reactor application. within the first article of this quantity, now we have Protopop­ escu's research of the constitution of the Boltzmann equation and its suggestions for power and space-dependent difficulties of an eigenvalue nature. There lengthy has been a curious "folk historical past" impact during this zone~ Wigner and Weinberg may possibly de­ scribe it as "what used to be usually recognized was once ordinarily untrue". This account of the Boltzmann equation without doubt will convey rigorous foundation for our expectancies of convinced strategies might be well-founded on research. Ely Gelbard's evaluation of the tools of picking out diffusion-type parameters in advanced geometries the place basic diffusion concept will be welcome has required simply as a lot rigor to figure out how such modeling should be made actual, even if to a extra quick and useful objective. the 2 articles will be noticeable as attention-grabbing contrasts, points of an identical underlying challenge exhibiting it appears assorted features of an analogous vital core.

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Sjöstrand, N. , "Deeay Constants for Pu1sed Monoenergetie Neutron Systems with Anisotropie Seattering," Preprint CTH-RF-28, 1975. 5. , Sjöstrand, N. , Journal of Nue1ear Seienee and TeehPage 256, 1975. no1ogy~, 6. Hino, T. , Journal of Nuc1ear Seienee and Teehno1ogy 12, Page 388, 1975. 7. Sjöstrand, N. , Journal of Nue1ear Seienee and Teehno1ogy ~, Page 81, 1976. 8. Sjöstrand, N. , Nue1ear Seienee and Engineering 63, Page 217, 1977. 9. Sjöstrand, N. , "Deeay Constants for Pu1sed Monoenergetie Neutron Systems with Quadratiea11y Anisotropie Seattering," Preprint CTH-RF-30, 1977 10.

Nuclear Science and Engineering 28, Page 247, 1967. 69. Ritchie, A. I. M. and Rainbow, M. , Nuclear Science and Engineering 38, Page 306,1967; Ritchie, A. I. , Journal of Nuclear Energy 22, Pages 371, 717, 1968; Rainbow, M. T. and Ritchie-,-A. I. , Journal of Nuclear Energy ~, Page 735, 1968. 70. Energy~, Q Page , Grösshog, G. , Journal of Nuclear Energy Page 101, 1969. ~, 50 V. PROTOPOPESCU 71. , Nuclear Science and Engineering 42, Page 16, 1970. 72. Grösshog, G. , Journal of Nuclear Energy 25, Page 361, 1971.

Z a cannot be satisfied for cornp1ex A • 29 EIGENVALUE PROBLEMS FOR THE BOLTZMANN OPERATOR B. True Eigenvalues Beyond Continuum We meet situations, nevertheless, in which true eigenvalues appear with the real part less than the continuum edge. Their experimental appearance was first related to the Bragg reflection in crystalline moderators (60,62,69), but we shall show in the following that negative anisotropies or the presence of cavities in moderators also can yield such eigenvalues. A first modeling of such a situation was made by Conn and Corngold who put in evidence in the frame of thee iBr theory, for an energy-dependent model, the possibility of occurrence of proper eigenvalues beyond the sub-Bragg continuum (98).

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