ANALYSIS OF INTERMEDIATE STRUCTURE IN FISSION CROSS SECTION OF $sup 239$Pu
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Published: 1971
Total Pages:
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Published: 1971
Total Pages:
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DOWNLOAD EBOOKAuthor: Kikuchi Yaskuyuki
Publisher:
Published: 1971
Total Pages: 29
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DOWNLOAD EBOOKAuthor: Kikuchi Yaskuyuki
Publisher:
Published: 1971
Total Pages: 14
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DOWNLOAD EBOOKAuthor:
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Published: 1971
Total Pages:
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DOWNLOAD EBOOKAuthor:
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Published: 1976
Total Pages: 612
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Published: 2009
Total Pages:
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DOWNLOAD EBOOKMore accurate fission cross section calculations in presence of underlying intermediate structure are strongly desired. This paper recalls the common approximations used below the fission threshold and quantifies their impact. In particular, an exact expanded R-matrix Monte Carlo calculation of the intermediate structure, deeply mixed with the fluctuations of the class-I and II decay amplitudes, is shown. This paper also insists on the microscopic structure of the level densities as a function of the nucleus deformation and show preliminary neutron induced fission cross section calculations for 239Pu and 24°Pu using newly calculated combinatorial level densities. Comparisons with recent evaluated and measured fission cross sections are made.
Author: United States. Energy Research and Development Administration
Publisher:
Published: 1977
Total Pages: 900
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DOWNLOAD EBOOKAuthor: United States. Energy Research and Development Administration. Technical Information Center
Publisher:
Published: 1976
Total Pages: 588
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DOWNLOAD EBOOKAuthor: Michel Baranger
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 476
ISBN-13: 1461590418
DOWNLOAD EBOOKIn the present volume and in the preceding one we have stretched our normal pattern of reviews by including articles of more major proportions than any we have published before. As a consequence each of these two vol umes contains only three review articles. From the beginning of this series it has been our aim, as editors, to achieve variation in the scope, style, and length of individual articles sufficient to match the needs of the individual topic, rather than to restrain the authors within rigid limits. We feel that the two major articles of Vols. 5 and 6 are entirely justified and do not repre sent unnecessary exuberance on the part of the authors. The article by Michaudon on fission is the first comprehensive account of the developments in this subject, which have placed it in the center of the stage of nuclear physics during the past few years. The discovery of fission isomerism and its dramatic manifestations in the intermediate structure of the neutron cross sections for fissionable isotopes are among the most im portant and interesting events to occur in nuclear physics. These events came as a surprise, and reaffirmed that the strength of nuclear physics lies in the combination of ingenious experiments with simple ideas.