Nonadditivity in moments of inertia of high-K multiquasiparticle bands

  • The experimental high-K 2- and 3-quasiparticle bands of well deformed rare-earth nuclei are analyzed. It is found that there exists significant nonadditivity in moments of inertia (MOIs) for these bands. The microscopic mechanism of the rotational bands is investigated by the particle number conserving (PNC) method in the frame of cranked shell model with pairing, in which the blocking effects are taken care of exactly. The experimental rotational frequency dependence of these bands is well reproduced in PNC calculations. The nonadditivity in MOIs originates from the destructive interference between Pauli blocking effects.
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  • [1] . Bohr A, Mottelson B R. Nuclear Structure, Vol.2. New York: M. A. Benjamin, 19752. Nilsson S G, Prior O. Mat. Fys. Medd. Dan. Vid. Selsk.,1960, 32(16): 13. ZENG J Y, CHENG T S. Nucl. Phys. A, 1983, 405: 1-614. Singh S, Malik S S, Jain A K, Singh B. Atomic Data and Nuclear Data Tables, 2006, 92: 1-285. Hayes A B et al. Phys. Rev. Lett., 2002, 89: 242501-46. Richardson R W. Phys. Rev., 1966, 141: 949-9567. Rowe D J. Nuclear Collective Motion. London: Methuen,19748. Molique H, Dudek J. Phys. Rev. C, 1997, 56: 1795-18139. ZENG J Y, JIN T H, ZHAO Z J. Phys. Rev. C, 1994, 50:1388-139710. XIN X B, LIU S X, LEI Y A, ZENG J Y. Phys. Rev. C,2000, 62: 067303-611. WU C S, ZENG J Y. Phys. Rev. C, 1989, 39: 666-67012. LIU S X, ZENG J Y, ZHAO E G. Phys. Rev. C, 2002, 66:024320-413. Nilsson S G et al. Nucl. Phys. A, 1969, 131: 1-6614. Bengtsson R, Frauendorf S, May F R. Data and Nucl. Data Tables, 1986, 35: 15-12215. Baktash C, Garrett J D, Winchell D F, Smith A. Phys.Rev. Lett., 1992, 69: 1500-1503
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ZHANG Zhen-Hua, WU Xi, LEI Yi-An and ZENG Jin-Yan. Nonadditivity in moments of inertia of high-K multiquasiparticle bands[J]. Chinese Physics C, 2008, 32(9): 681-686. doi: 10.1088/1674-1137/32/9/001
ZHANG Zhen-Hua, WU Xi, LEI Yi-An and ZENG Jin-Yan. Nonadditivity in moments of inertia of high-K multiquasiparticle bands[J]. Chinese Physics C, 2008, 32(9): 681-686.  doi: 10.1088/1674-1137/32/9/001 shu
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Received: 2008-04-21
Revised: 2008-05-07
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Nonadditivity in moments of inertia of high-K multiquasiparticle bands

    Corresponding author: LEI Yi-An,

Abstract: The experimental high-K 2- and 3-quasiparticle bands of well deformed rare-earth nuclei are analyzed. It is found that there exists significant nonadditivity in moments of inertia (MOIs) for these bands. The microscopic mechanism of the rotational bands is investigated by the particle number conserving (PNC) method in the frame of cranked shell model with pairing, in which the blocking effects are taken care of exactly. The experimental rotational frequency dependence of these bands is well reproduced in PNC calculations. The nonadditivity in MOIs originates from the destructive interference between Pauli blocking effects.

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