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Chinese Physics C> 2001, Vol. 25> Issue(2) : 129-133 

Microscopic Mechanism of the ω Variation in Moments of Inertia for the Series of Yrast SD Bands 192—198Pb(1) and 198Po(1)

  •  Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, ChinaDepartment of Physics, Peking University, Beijing 100871, China

  • The variations in moments of inertia (J(2) and J(1)) with rotational frequency for the series of yrast SD bands in even-even nuclei, 192—198Pb(1) and 198Po(1), are investigated by using the particle-number conserving method for treating the pairing interaction (monopole and quadrupole). The observed co variations of J(2) and J(1) are reproduced quite well in the PNC calculation, particularly the microscopic mechanism (the contributions from each major shell and each cranked Nilsson orbital) is clearly displayed. It is found that the smooth rise of J(2) with ω is attributed to the contribution from the intruder shells (neutron N=7 and proton N=6).
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    [1] Riley M A et al. Nucl. Phys., 1990,A512:178 2 LIU S X,ZENG J Y. Phys. Rev., 1998,C58:3266 3 Ye D et al. Phys. Rev., 1990, C41:R134 LIU Shu–Xin et al. High Energy Phys. and Nucl. Phys.,200l,25:37(in Chinese)(刘树新等. 高能物理与核物理,2001,25:37)5 XIU X B, LEI Y A, LIU S X, ZENG J Y. Chin. Phys. Lett., 2000,17:946 ZENGJ Y, JIN T H, ZHAO ZJ. Phys. Rev., 1994, C50:1388 7 Wakai M, Faessler A. Nucl. Phys., 1978, A295:86 8 Dibel M. Nucl. Phys., 1984, A419:221 9 Bengtsson T, Ragnarsson I. Nucl. Phys., 1985, A436:14 10 Becker J A et al. Nucl. Phys., 1990, A520:187c 11 Cederwell B et al. Phys. Rev. Lett., 1994, 72:3150 12 Hausschild K et al. Phys. Rev., 1997, C55:2819

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YU Lei, LIU Shu-Xin, LEI Yi-An and ZENG Jin-Yan. Microscopic Mechanism of the ω Variation in Moments of Inertia for the Series of Yrast SD Bands 192—198Pb(1) and 198Po(1)[J]. Chinese Physics C, 2001, 25(2): 129-133.
YU Lei, LIU Shu-Xin, LEI Yi-An and ZENG Jin-Yan. Microscopic Mechanism of the ω Variation in Moments of Inertia for the Series of Yrast SD Bands 192—198Pb(1) and 198Po(1)[J]. Chinese Physics C, 2001, 25(2): 129-133. shu
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Received: 2000-01-10
Revised: 1900-01-01
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Microscopic Mechanism of the ω Variation in Moments of Inertia for the Series of Yrast SD Bands 192—198Pb(1) and 198Po(1)

    Corresponding author: YU Lei,
  • Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, ChinaDepartment of Physics, Peking University, Beijing 100871, China
  • Received Date: 2000-01-10
  • Accepted Date: 1900-01-01
  • Available Online: 2001-02-05

Abstract: The variations in moments of inertia (J(2) and J(1)) with rotational frequency for the series of yrast SD bands in even-even nuclei, 192—198Pb(1) and 198Po(1), are investigated by using the particle-number conserving method for treating the pairing interaction (monopole and quadrupole). The observed co variations of J(2) and J(1) are reproduced quite well in the PNC calculation, particularly the microscopic mechanism (the contributions from each major shell and each cranked Nilsson orbital) is clearly displayed. It is found that the smooth rise of J(2) with ω is attributed to the contribution from the intruder shells (neutron N=7 and proton N=6).

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