StrongM1components in3i−→31−transitions in nearly spherical nuclei: Evidence for isovector-octupole excitations

作者: M. Scheck , P. A. Butler , C. Fransen , V. Werner , S. W. Yates

DOI: 10.1103/PHYSREVC.81.064305

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摘要: An evaluation of data obtained in (n,n{sup '}gamma) experiments reveals strong M1 3{sub i}{sup -}->3{sub 1}{sup -} transitions nuclei near the N=50 ({sup 92}Zr, {sup 94}Mo, and 96}Mo), Z=50 112}Cd 114}Cd), N=82 144}Nd) shell closures. The observed matrix elements scale with connecting mixed-symmetric symmetric quadrupole excitations. In accordance a picture mixed two-component quantum system, energy difference between initial state octupole phonon is proportional to | element. possibility assigning 3{sup states interest as isovector discussed.

参考文章(36)
D. Bandyopadhyay, S. R. Lesher, C. Fransen, N. Boukharouba, P. E. Garrett, K. L. Green, M. T. McEllistrem, S. W. Yates, Investigation of phonon excitations in {sup 114}Cd with the (n,n{sup '}{gamma}) reaction Physical Review C. ,vol. 76, pp. 054308- ,(2007) , 10.1103/PHYSREVC.76.054308
P. E. Garrett, K. L. Green, H. Lehmann, J. Jolie, C. A. McGrath, M. Yeh, S. W. Yates, Properties of Cd 112 from the ( n , n ' γ ) reaction: Lifetimes and transition rates Physical Review C. ,vol. 75, pp. 054310- ,(2007) , 10.1103/PHYSREVC.75.054310
A. Arima, F. Iachello, COLLECTIVE NUCLEAR STATES AS REPRESENTATIONS OF A SU(6) GROUP Physical Review Letters. ,vol. 35, pp. 1069- 1072 ,(1975) , 10.1103/PHYSREVLETT.35.1069
R. A. Gatenby, S. W. Yates, G. Molnár, Search for mixed-symmetry states in the O(6) nucleus 134Ba. Physical Review C. ,vol. 37, pp. 898- 901 ,(1988) , 10.1103/PHYSREVC.37.898
Ulrich Kneissl, Norbert Pietralla, Andreas Zilges, Low-lying dipole modes in vibrational nuclei studied by photon scattering Journal of Physics G. ,vol. 32, ,(2006) , 10.1088/0954-3899/32/8/R01
E. Elhami, J. N. Orce, M. Scheck, S. Mukhopadhyay, S. N. Choudry, M. T. McEllistrem, S. W. Yates, C. Angell, M. Boswell, B. Fallin, C. R. Howell, A. Hutcheson, H. J. Karwowski, J. H. Kelley, Y. Parpottas, A. P. Tonchev, W. Tornow, Experimental study of the low-lying structure of Zr 94 with the ( n , n ' γ ) reaction Physical Review C. ,vol. 78, pp. 064303- ,(2008) , 10.1103/PHYSREVC.78.064303
N. Lo Iudice, Ch. Stoyanov, Microscopic structure of low-lying positive parity states in nuclei near shell closure Physical Review C. ,vol. 65, pp. 064304- ,(2002) , 10.1103/PHYSREVC.65.064304
I. Pysmenetska, S. Walter, J. Enders, H. von Garrel, O. Karg, U. Kneissl, C. Kohstall, P. von Neumann-Cosel, H. H. Pitz, V. Yu. Ponomarev, M. Scheck, F. Stedile, S. Volz, Two-phonon 1- state in Sn-112 observed in resonant photon scattering Physical Review C. ,vol. 73, pp. 017302- ,(2006) , 10.1103/PHYSREVC.73.017302
K. Heyde, J. Sau, Symmetric and antisymmetric states: A general feature of two-component systems Physical Review C. ,vol. 33, pp. 1050- 1061 ,(1986) , 10.1103/PHYSREVC.33.1050