Evolution of nuclear shapes in /sup 157/-/sup 161/Yb as a function of spin and neutron number

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The population distributions of the entry states, the entry lines <E*> versus multiplicity, the energy spectra and the angular distributions of the continuum ..gamma..-rays as a function of multiplicity in /sup 157/-/sup 161/Yb from the reactions of 136 MeV and 149 MeV /sup 20/Ne with /sup 144/Nd and /sup 146/Nd have been investigated with a 4pi multidetector system gated with a Ge detector. The observed entry lines and ..gamma..-decay modes indicate change for N = 87 - 9l Yb isotopes suggests an evolution of nuclear shapes from prolate at low spins to particle aligned oblate structure for /sup 157/Yb and ... continued below

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Pages: 11

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Jaeaeskelaeinen, M.; Sarantites, D.G.; Dilmanian, F.A.; Woodward, R.; Puchta, H.; Beene, J.R. et al. January 1, 1982.

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The population distributions of the entry states, the entry lines <E*> versus multiplicity, the energy spectra and the angular distributions of the continuum ..gamma..-rays as a function of multiplicity in /sup 157/-/sup 161/Yb from the reactions of 136 MeV and 149 MeV /sup 20/Ne with /sup 144/Nd and /sup 146/Nd have been investigated with a 4pi multidetector system gated with a Ge detector. The observed entry lines and ..gamma..-decay modes indicate change for N = 87 - 9l Yb isotopes suggests an evolution of nuclear shapes from prolate at low spins to particle aligned oblate structure for /sup 157/Yb and /sup 158/Yb followed by the onset of high-K bands built on largely deformed oblate states at increasingly higher spin between 38 and 50 n with increasing neutron number for /sup 157/-/sup 161/Yb. Furthermore evidence for an evolution to triaxial shape at I approx. = 50 for /sup 158/Yb was found. 23 references.

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Pages: 11

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NTIS, PC A02/MF A01.

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  • 9. EPS Nuclear Physics Divisional conference on nuclear structure, Amsterdam, Netherlands, 29 Aug 1982

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  • Other: DE84000410
  • Report No.: CONF-820828-11
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 5769827
  • Archival Resource Key: ark:/67531/metadc1100698

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  • January 1, 1982

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  • Feb. 18, 2018, 3:59 p.m.

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  • March 20, 2018, 8:40 p.m.

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Jaeaeskelaeinen, M.; Sarantites, D.G.; Dilmanian, F.A.; Woodward, R.; Puchta, H.; Beene, J.R. et al. Evolution of nuclear shapes in /sup 157/-/sup 161/Yb as a function of spin and neutron number, article, January 1, 1982; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1100698/: accessed July 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.