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刘红亮 西安交通大学理学院

Effects of high-order deformation on high-spin structure in the heaviest nuclei accessible by spectroscopy experiments. 刘红亮 西安交通大学理学院. 2012 年 8 月 兰州. Introduction. The heaviest nuclei accessible by spectroscopy experiments.

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刘红亮 西安交通大学理学院

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  1. Effects of high-order deformation on high-spin structure in the heaviest nuclei accessible by spectroscopy experiments 刘红亮 西安交通大学理学院 2012年8月 兰州

  2. Introduction The heaviest nuclei accessible by spectroscopy experiments R.-D. Herzberg and P.T. Greenlees, Prog. Part. Nucl. Phys. 61, 674 (2008).

  3. Introduction 4-qp isomer ANL R.-D. Herzberg et al. Nature 442(2006)896 2-qp isomer S.K. Tandel et al. Phys. Rev. Lett. 97(2006)082502 JYFL LBNL Hessberger et al. Eur. Phys. J. A 43(2010)55 R.M. Clark et al. Phys. Lett. B 690(2010)19 GSI

  4. Introduction 254No 256Rf 252No R.-D. Herzberg et al., Phys. Rev. C 65, 014303 (2001). S. Eeckhaudt et al., Eur. Phys. J. A 26, 227 (2005). P.T. Greenlees et al. Phys. Rev. Lett. 109, 012501 (2012).

  5. Introduction Previous theoretical studies

  6. Introduction Different rotational behaviors observed in 252No and 254No R.-D. Herzberg et al., Phys. Rev. C 65, 014303 (2001). S. Eeckhaudt et al., Eur. Phys. J. A 26, 227 (2005).

  7. Introduction β6 deformations I. Muntian et al., Phys. Lett. B 500, 241 (2001).

  8. Model Nuclear shape parametrization Configuration-constrained calculations of potential-energy surfaces Standard liquid drop model TRIAXIAL Strutinsky shell correction calculated from Woods-Saxon potential and Lipkin-Nogami pairing traced by F.R. Xu et al.,Phys. Lett. B 435, 257 (1998). H.L. Liu et al., Eur. Phys. J. A. 47, 135 (2011). H.L. Liu et al., Phys. Rev. C 83, 011303(R) (2011).

  9. Model Total Routhian surface (TRS) calculation of nuclear rotation A deformation-pairing-frequency self-consistent model W. Satula and R. Wyss, Phys. Scr., T 56, 159 (1995). F.R. Xu et al., Nucl. Phys. A 669, 119 (2000). H.L. Liu et al., Phys. Rev. C 86, 011301(R) (2012).

  10. Calculation of multi-quasiparticle state Increased binding due to β6 deformations Remarkable and stable β6 deformations Solid lines: Cal. with β6 Dashed lines: Cal. without β6 H.L. Liu, F.R. Xu, P.M. Walker, and C.A. Bertulani, Phys. Rev. C 83, 011303(R) (2011).

  11. Calculation of multi-quasiparticle state Comparison between exp. and cal. Single-particle levels H.L. Liu, F.R. Xu, P.M. Walker, and C.A. Bertulani, Phys. Rev. C 83, 011303(R) (2011).

  12. Calculation of collective rotation Calculated kinematic moments of inertia (MOIs) H.L. Liu, F.R. Xu, and P.M. Walker, Phys. Rev. C 86, 011301(R) (2012).

  13. Calculation of collective rotation Proton and neutron components of the calculated MOIs H.L. Liu, F.R. Xu, and P.M. Walker, Phys. Rev. C 86, 011301(R) (2012).

  14. Calculation of collective rotation Shape changes with rotation H.L. Liu, F.R. Xu, and P.M. Walker, Phys. Rev. C 86, 011301(R) (2012).

  15. Summary • Significantly improved description of 254No high-K isomers with β6 deformation • The observed different rotational behaviors of 252No and 254No can be understood in terms of β6 deformation

  16. Thank you!

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