Reflection Asymmetric Shapes in the Neutron-Rich 140,143Ba Isotopes
ZHU Sheng-jiang1, WANG Mu-ge1, J. H. Hamilton2, A. V. Ramayya2, B. R. S. Babu2, W. C. Ma3, LONG Gui-lu1, DENG Jing-kang1, ZHU Ling-yan1, LI Ming1, T. N. Ginter2, J. Komicki2, J. D. Cole4, R. Aryaeinejadv4, Y. K. Dardenne4, M. W. Drigert4, J. O. Rasmussen5, Yu. Ts. Oganessian5, M. A. Stoyer5, S. Y. Chu5, K. E. Gregorich5, M. F. Mohar5, S. G. Prussin5, I. Y. Lee5, N. R. Johnson6, F. K. McGowan6
1Department of Physics, Tsinghua University, Beijing 100084
2Department of Physics, Vanderbilt University, Nashville, TN 37235, U.S.A.
3Department of Physics, Mississippi State University; MS 39762, U.S.A.
41daho National Engineering Laboratory, Idaho Falls, ID 83415, U.S.A.
5Lawrence Berkeley Laboratory, Berkeley, CA 94720, U.S.A.
6Oak Ridge National Laboratory, Oak Ridge, TN 37831, U. S, A.
Reflection Asymmetric Shapes in the Neutron-Rich 140,143Ba Isotopes
ZHU Sheng-jiang1;WANG Mu-ge1;J. H. Hamilton2;A. V. Ramayya2;B. R. S. Babu2;W. C. Ma3;LONG Gui-lu1;DENG Jing-kang1;ZHU Ling-yan1;LI Ming1;T. N. Ginter2;J. Komicki2;J. D. Cole4;R. Aryaeinejadv4;Y. K. Dardenne4;M. W. Drigert4;J. O. Rasmussen5;Yu. Ts. Oganessian5;M. A. Stoyer5;S. Y. Chu5;K. E. Gregorich5;M. F. Mohar5;S. G. Prussin5;I. Y. Lee5;N. R. Johnson6;F. K. McGowan6
1Department of Physics, Tsinghua University, Beijing 100084
2Department of Physics, Vanderbilt University, Nashville, TN 37235, U.S.A.
3Department of Physics, Mississippi State University; MS 39762, U.S.A.
41daho National Engineering Laboratory, Idaho Falls, ID 83415, U.S.A.
5Lawrence Berkeley Laboratory, Berkeley, CA 94720, U.S.A.
6Oak Ridge National Laboratory, Oak Ridge, TN 37831, U. S, A.
Abstract： Level schemes for the neutron-rich 140,143Ba nuclei have been determined by study of prompt γ-rays in spontaneous fission of 252Cf. The level pattern and enhanced E1 transitions between π = + and π = - bands show reflection asymmetric shapes with simplex quantum number s = +1 in 140Ba and s = ±i in 143Ba, respectively. The octupole deformation stability with spin variation has been discussed.
ZHU Sheng-jiang;WANG Mu-ge;J. H. Hamilton;A. V. Ramayya;B. R. S. Babu;W. C. Ma;LONG Gui-lu;DENG Jing-kang;ZHU Ling-yan;LI Ming;T. N. Ginter;J. Komicki;J. D. Cole;R. Aryaeinejadv;Y. K. Dardenne;M. W. Drigert;J. O. Rasmussen;Yu. Ts. Oganessian;M. A. Stoyer;S. Y. Chu;K. E. Gregorich;M. F. Mohar;S. G. Prussin;I. Y. Lee;N. R. Johnson;F. K. McGowan. Reflection Asymmetric Shapes in the Neutron-Rich 140,143Ba Isotopes[J]. 中国物理快报, 1997, 14(8): 569-572.
ZHU Sheng-jiang, WANG Mu-ge, J. H. Hamilton, A. V. Ramayya, B. R. S. Babu, W. C. Ma, LONG Gui-lu, DENG Jing-kang, ZHU Ling-yan, LI Ming, T. N. Ginter, J. Komicki, J. D. Cole, R. Aryaeinejadv, Y. K. Dardenne, M. W. Drigert, J. O. Rasmussen, Yu. Ts. Oganessian, M. A. Stoyer, S. Y. Chu, K. E. Gregorich, M. F. Mohar, S. G. Prussin, I. Y. Lee, N. R. Johnson, F. K. McGowan. Reflection Asymmetric Shapes in the Neutron-Rich 140,143Ba Isotopes. Chin. Phys. Lett., 1997, 14(8): 569-572.
MA Long;ZHOU Xiao-Hong;XING Ye-Bing;ZHANG Yu-Hu;GUO Ying-Xing;LEI Xiang-Guo;XIE Chen-Ying;Oshima M.;Toh Y.;Koizumi M.;Osa A.;Hatsukawa Y.;Sugawara M.. Properties of the πh9/2 otimes νi13/2 Oblate Band in 188Tl[J]. 中国物理快报, 2006, 23(7): 1727-1730.
CHE Xing-Lai;ZHU Sheng-Jiang;J. H. Hamilton;A. V. Ramayya;J. K. Hwang;J. O. Rasmussen;Y. X. Luo;CHEN Yong-Jing;LI Ming-Liang;DING Huai-Bo;U Yong-Nam;I. Y. Lee;W. C. Ma. High Spin Band Structure in 112Ru[J]. 中国物理快报, 2006, 23(2): 328-331.
1997, Vol. 14 
