相对论平均场理论对Rn同位素链原子核基态性质的研究

陈兴鹏; 王楠

doi:10.7498/aps.60.112101

摘要

在相对论平均场理论的框架下,对Rn同位素链原子核的结合能、形变、同位素位移等若干基态性质进行了较详细的研究.结果表明,理论计算结果与已有的实验数据符合较好.原子核的四极形变主要出现在远离幻数的区域(N=110-124和N=129-142).而在中子数大于幻数的区域(N=127-142),十六级形变也非常明显.对电荷半径的研究显示,Rn同位素链的同位素位移曲线的斜率在中子幻数处出现明显的变化.

关键词:

The ground state properties of Rn isotopes are studied within the framework of relativistic mean field theory. The pairing correlation is treated by the BCS method. The calculation results are in good agreement with the experimental data. The quadrupole deformations can be founded mainly in the regions with neutron number far from magic number (N=110-124) and (N=129-142). In the regions where the neutron number is larger than the magic number(N=127-142), the hexadecapole deformations are also significant. The isotope shift for Rn isotope is also studied and a drastic change in the slope of the curve is found near the magic neutron nuclei.

Keywords:

作者及机构信息

陈兴鹏,
王楠

1.
深圳大学物理科学与技术学院,深圳 518060

基金项目: 国家自然科学基金(批准号:10975100,10979024,11011130216)资助的课题.

Authors and contacts

1.
College of Physics, Shenzhen University, Shenzhen 518060, China

参考文献

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[2]	Sobiczewski A, Muntian I, Patyk Z 2001 Phys. Rev. C 63 034306
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[6]	Sharma M M, Lalazissis G A, Ring P 1993 Phys. Lett. B 317 9
[7]	Gambhir Y K, Ring P, Thimet A 1990 Ann. Phys. 198 132
[8]	Geng L S, Toki H, Meng J 2003 Phys. Rev. C 68 061303
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[10]	Rutz K, Maruhn J A, Reinhard P G, Greiner W 1995 Nucl. Phys. A 590 680
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[12]	Chen J G, Cai X Z, Wang T T, Ma Y G, Ren Z Z, Fang F Q, Zhong C, Wei Y B, Guo W, Zhou X F,Wang K, Ma G L, Tian W D, Chen J H, Yan T Z, Zuo J X, Ma C W, Shen W Q 2005 Chin. Phys. 14 2444
[13]	Zhang H F, Zuo W, Li J Q, Ren X Z, Ma Z Y, Chen B Q 2006 High Energ. Phys. and Nucl. Phys. 30 745(in Chinese) [张鸿飞、左维、李君清、任秀宰、马中玉、陈宝秋 2006 高能物理与核物理 30 745]
[14]	Shen Y S, Ren Z Z 1996 Z. Phys. A 355 247
[15]	Fayans S A, Tolokonnikov S V, Trykov E L, Zawischa D 1994 Phys. Lett. B 1 338
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[17]	Li J Q, Ma Z Y, Chen B Q, Zhou Y 2002 Phys. Rev. C 65 064305
[18]	Lalazissis G A, König J, Ring P 1997 Phys. Rev. C 55 540
[19]	Sharma M M, Nagarajan M A, Ring P 1993 Phys. Lett. B 312 377
[20]	Audi G, Wapstra A H 1995 Nucl. Phys. A 595 409
[21]	Dai N X, Li J Z, Gao L J 1995 Handbook for Subatomic Physics (Beijing: Science Press) p716(in Chinese) [戴能雄、李继周、高良俊 1995 亚原子物理学手册(北京:科学出版社) 第716页]
[22]	Angeli I 2004 Atom. Data and Nucl. Data Tables 87 185

施引文献

[1]	Nazarewicz W, Olanders P, Ragnarsson I, Dudek J, Leander G A, Möller P, Ruchowsa E 1984 Nucl. Phys. A 429 269
[2]	Sobiczewski A, Muntian I, Patyk Z 2001 Phys. Rev. C 63 034306
[3]	Möller P, Nix J R, Myers W D 1995 Atom. Data and Nucl. Data Tables 59 185
[4]	Wu Z Y, Xu F R 2006 High Energ. Phys. and Nucl. Phys. 30 (Supp.Ⅱ) 78(in Chinese) [吴哲英、许甫荣 2006 高能物理与核物理 30 (增刊Ⅱ) 78 ]
[5]	Jiao P, Guo J Y, Fang X Z 2010 Acta Phys. Sin. 59 2369(in Chinese) [焦朋、郭建友方向正 2010 物理学报 59 2369]
[6]	Sharma M M, Lalazissis G A, Ring P 1993 Phys. Lett. B 317 9
[7]	Gambhir Y K, Ring P, Thimet A 1990 Ann. Phys. 198 132
[8]	Geng L S, Toki H, Meng J 2003 Phys. Rev. C 68 061303
[9]	Long W H, Meng J, Giai V N, Zhou S G 2004 Phys. Rev. C 69 034319
[10]	Rutz K, Maruhn J A, Reinhard P G, Greiner W 1995 Nucl. Phys. A 590 680
[11]	Sheng Z Q, Guo J Y 2008 Acta Phys. Sin. 57 1557(in Chinese) [圣宗强、郭建友 2008 物理学报 57 1557]
[12]	Chen J G, Cai X Z, Wang T T, Ma Y G, Ren Z Z, Fang F Q, Zhong C, Wei Y B, Guo W, Zhou X F,Wang K, Ma G L, Tian W D, Chen J H, Yan T Z, Zuo J X, Ma C W, Shen W Q 2005 Chin. Phys. 14 2444
[13]	Zhang H F, Zuo W, Li J Q, Ren X Z, Ma Z Y, Chen B Q 2006 High Energ. Phys. and Nucl. Phys. 30 745(in Chinese) [张鸿飞、左维、李君清、任秀宰、马中玉、陈宝秋 2006 高能物理与核物理 30 745]
[14]	Shen Y S, Ren Z Z 1996 Z. Phys. A 355 247
[15]	Fayans S A, Tolokonnikov S V, Trykov E L, Zawischa D 1994 Phys. Lett. B 1 338
[16]	Sugahara Y, Toki H 1994 Nucl. Phys. A 579 572
[17]	Li J Q, Ma Z Y, Chen B Q, Zhou Y 2002 Phys. Rev. C 65 064305
[18]	Lalazissis G A, König J, Ring P 1997 Phys. Rev. C 55 540
[19]	Sharma M M, Nagarajan M A, Ring P 1993 Phys. Lett. B 312 377
[20]	Audi G, Wapstra A H 1995 Nucl. Phys. A 595 409
[21]	Dai N X, Li J Z, Gao L J 1995 Handbook for Subatomic Physics (Beijing: Science Press) p716(in Chinese) [戴能雄、李继周、高良俊 1995 亚原子物理学手册(北京:科学出版社) 第716页]
[22]	Angeli I 2004 Atom. Data and Nucl. Data Tables 87 185

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