Reducibility, thermal and mass scaling in angular correlations from multifragmentation reactions

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Intermediate-mass-fragment (IMF, 3 {le} Z {le} 20) emission probabilities and IMF charge distributions were recently shown to be reducible to the corresponding one fragment quantities. Furthermore, a strong thermal scaling was shown to control the energy dependence of the same quantities. The multifragmentation scenario painted by these experimental observations is that of a process controlled by a largely independent emission of individual fragments, which, in turn is dominated by phase space. Fragment-fragment angular correlations have been used to study the space-time extension of the emitting source. In particular, small angle repulsion (the Coulomb hole) has been interpreted in terms of ... continued below

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8 p.

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Phair, L.; Moretto, L.G. & Wozniak, G.J. January 1, 1996.

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Intermediate-mass-fragment (IMF, 3 {le} Z {le} 20) emission probabilities and IMF charge distributions were recently shown to be reducible to the corresponding one fragment quantities. Furthermore, a strong thermal scaling was shown to control the energy dependence of the same quantities. The multifragmentation scenario painted by these experimental observations is that of a process controlled by a largely independent emission of individual fragments, which, in turn is dominated by phase space. Fragment-fragment angular correlations have been used to study the space-time extension of the emitting source. In particular, small angle repulsion (the Coulomb hole) has been interpreted in terms of the Coulomb repulsion of fragments emitted near each other, both in space and time. We will show in this paper that, except at small angles, the particle-particle angular correlations and their dependence on excitation energy are interpretable in terms of nearly independently emitted fragments whose angular distributions are controlled by phase space. Thus we show that the angular correlations are reducible and thermally scalable. A mass scaling of the angular correlations will also be demonstrated and its possible implications discussed.

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8 p.

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INIS; OSTI as DE96008576

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  • 12. winter workshop on nuclear dynamics, Salt Lake City, UT (United States), 5-10 Feb 1996

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  • Other: DE96008576
  • Report No.: LBL--38439
  • Report No.: CONF-960276--6
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 216260
  • Archival Resource Key: ark:/67531/metadc668515

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • June 24, 2016, 1:37 p.m.

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Phair, L.; Moretto, L.G. & Wozniak, G.J. Reducibility, thermal and mass scaling in angular correlations from multifragmentation reactions, article, January 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc668515/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.