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) and¹⁹⁸Po(1)

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

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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).

References

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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.

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Received: 2000-01-10
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Microscopic Mechanism of the ω Variation in Moments of Inertia for the Series of Yrast SD Bands^192—198Pb(1) and¹⁹⁸Po(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) and¹⁹⁸Po(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).