N=28丰中子核的形变和形状共存研究

支启军

doi:10.7498/aps.60.052101

摘要

利用同位旋依赖的尼尔逊势,在宏观-微观理论框架下,计算了幻数N=28同中子链上原子核的性质,研究了N=28同中子链上原子核的形变和形状共存现象. 研究结果表明,N=28这个幻数在Na,Mg, Al同位素链上有着强的形状共存现象. 此外,计算表明42Si的基态为扁椭球,同时在Si同位素链上的形状共存现象相对较弱.

关键词:

同位旋 /
幻数 /
形变 /
形状共存

With the isospin-dependent Nilsson potential, we calculate the properties of the N=28 nuclei in the framework of macroscopic-microscopic model. The shape and shape coexistence of these nuclei are calculated and discusses. It is shown that strong shape coexistences occur in the ground state of nuclei with N=28 in Na, Mg and Al isotopes. It is pointed out that, the ground state of 42Si is oblate shape and there is no obvious shape coexistence for 42Si.

Keywords:

作者及机构信息

支启军

1.
贵州师范大学物理与电子科学学院,贵阳 550001

基金项目: 国家自然科学基金(批准号:10865004),贵州省科学技术基金(批准号:[2008]2254号),贵州师范大学博士基金资助的课题.

Authors and contacts

Zhi Qi-Jun

1.
School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, China

参考文献

[1]	Ren Z, Zhu Z Y, Cai Y H, Xu G 1996 Phys. Lett. B 380 241
[2]	Li Y, Shen S F,Shi S H, Gu J H, Liu, J Y, Xu H 2005 Chin. Phys. 14 95
[3]	Zhang Y M, Xu F R 2008 Acta. Phys. Sin. 57 4826 (in Chinese) [张玉美、许甫荣 2008 物理学报 57 4826]
[4]	Sheng W Q, Zhan W L, Ye Y L, Liu W P, Jin G M, Zhou X H, Xu S W, Zhu L H, Zhu S J, Liu Z H, Meng J 2001 Nuclear Physics Review 18 206 (in Chinese)[沈文庆、詹文龙、叶沿林、柳卫平、靳根明、周小红、徐树威、竺礼华、朱胜江、刘祖华、孟杰 2001 原子核物理评论 18 206]
[5]	Thibault C, Klapisch R, Rigaud C, Poskanzer A M, Prieels R, Lessard L, Reisdorf W 1975 Phys. Rev. C 12 644
[6]	Werner T R, Sheikh J A, Nazarewicz W, Strayer M R, Umar A S, Misu M 1994 Phys. Lett. B 333 303
[7]	Motobayashi T, Ikeda Y, Ieki K, Inoue M, Iwasa N, Kikuchi T, Kurokawa M, Moriya S, Ogawa S, Murakami H, Shimoura S, Yanagisawa Y, Nakamura T, Watanabe Y, Ishihara M, Teranishi T, Okuno H, Casten R F 1995 Phys. Lett. B 346 9
[8]	Neyens G, Kowalska M, Yordanov D, Blaum K, Himpe P, Lievens P, Mallion S, Neugart R, Vermeulen N, Utsuno Y, Otsuka T 2005 Phys. Rev. Lett. 94 022501
[9]	Schwerdtfeger W, Thirolf P G, Wimmer K, Habs D, Mach H, Rodriguez T R, Bildstein V, Egido J L, Fraile L M, Gernhöuser R, Hertenberger R, Heyde K, Hoff P, Hübel H, Küster U, Kröll T, Krücken R, Lutter R, Morgan T, Ring P 2009 Phys. Rev. Lett. 103 012501
[10]	Grévy S, Angelique J C, Baumann P, Borcea C, Buta A, Canchel G, Catford W N, Courtin S, Daugas J M, Oliveira F, Dessagne P, Dlouhy Z, Knipper A, Kratz K L, Lecolley F R, Lecouey J L, Lehrsenneau G, Lewitowicz M, Lienard E, Lukyanov S, Marechal F, Miehe C, Mrazek J, Negoita F, Orr N A, Pantelica D, Penionzhkevich Y, Peter J, Pffeier B, Pietri S, Poirier E, Sorlin O, Stanoiue M, Stefan I, Stodel C, Timis C 2004 Phys. Lett. B 594 252
[11]	Fridmann J, Wiedenhöover I, Gade A, Baby L T, Bazin D, Brown B A, Campbell C M, Cook J M, Cottle P D, Direnderfer E, Dinca D C, Glasmacher T, Hansen P G, Kemper K W, Lecouey J L, Mueller W F, Olliver H, Rodriguez-Vietez E, Tery J R, Tostevin J A, Yoneda K 2005 Nature 435 922
[12]	Bastin B, Grévy S, Sohler D, Sorlin O, Dombrádi Zs, Achouri N L, Angélique J C, Azaiez F, Baiborodin D, Borcea6 R, Bourgeois C, Buta A, Bürger A, Chapman R, Dalouzy J C , Dlouhy Z, Drouard A, Elekes Z, Franchoo S, Iacob S, Laurent B, Lazar M, Liang X, Liénard E, Mrazek J, Nalpas L, Negoita F, Orr N A, Penionzhkevich Y, Podolyák Zs, Pougheon F, Roussel-Chomaz P, Saint-Laurent M G, Stanoiu M, Stefan I 2007 Phys. Rev. Lett. 99 022503.
[13]	Riley L A, Adrich P, Baugher T R, Bazi D, Brown B A, Cook J M, Cottle P D, Diget C A, Gade A, Garland D A, Glasmacher T, Hosier K E, Kemper K W, Otsuka T, Rae W D M, Ratkiewicz A, Siwek K P, Tostevin J A, Utsuno Y, Weisshaar D 2008 Phys. Rev. C 78 011303
[14]	Caurier E, Nowacki F, Poves A, Retamosa J 1998 Phys. Rev. C 58 2033
[15]	Utsuno Y, Otsuka T, Mizusaki T, Honma M 1999 Phys. Rev. C 60 054315
[16]	Otsuka T, Suzuki T, Honma M, Utsuno Y, Tsunoda N, Tsukiyama K, Hjorth-Jensen M 2010 Phys. Rev. Lett. 104 012501
[17]	Rodriguez-Guzman R, Egido J L, Robledo L M 2000 Phys. Lett. B 474 15
[18]	Nowacki F, Poves A 2009 Phys. Rev. C 79 014310
[19]	Zhi Q J, Ren Z Z 2007 Nucl. Phys. A 794 10
[20]	Ding B G, Lu D H , Zhang D L 2007 Acta. Phys. Sin. 56 6905 (in Chinese) [丁斌刚、鲁定辉、张大立 2007 物理学报 56 6905]
[21]	Ding B G, Zhang D L, Lu D H 2009 Acta. Phys. Sin. 58 865 (in Chinese) [丁斌刚、张大立、鲁定辉 2009 物理学报 58 865]
[22]	Reinhard P G, Dean D J, Nazarewicz W, Dobaczewski J, Maruhn J A, Strayer M 1999 Phys. Rev. C 60 014316

施引文献

[1]	Ren Z, Zhu Z Y, Cai Y H, Xu G 1996 Phys. Lett. B 380 241
[2]	Li Y, Shen S F,Shi S H, Gu J H, Liu, J Y, Xu H 2005 Chin. Phys. 14 95
[3]	Zhang Y M, Xu F R 2008 Acta. Phys. Sin. 57 4826 (in Chinese) [张玉美、许甫荣 2008 物理学报 57 4826]
[4]	Sheng W Q, Zhan W L, Ye Y L, Liu W P, Jin G M, Zhou X H, Xu S W, Zhu L H, Zhu S J, Liu Z H, Meng J 2001 Nuclear Physics Review 18 206 (in Chinese)[沈文庆、詹文龙、叶沿林、柳卫平、靳根明、周小红、徐树威、竺礼华、朱胜江、刘祖华、孟杰 2001 原子核物理评论 18 206]
[5]	Thibault C, Klapisch R, Rigaud C, Poskanzer A M, Prieels R, Lessard L, Reisdorf W 1975 Phys. Rev. C 12 644
[6]	Werner T R, Sheikh J A, Nazarewicz W, Strayer M R, Umar A S, Misu M 1994 Phys. Lett. B 333 303
[7]	Motobayashi T, Ikeda Y, Ieki K, Inoue M, Iwasa N, Kikuchi T, Kurokawa M, Moriya S, Ogawa S, Murakami H, Shimoura S, Yanagisawa Y, Nakamura T, Watanabe Y, Ishihara M, Teranishi T, Okuno H, Casten R F 1995 Phys. Lett. B 346 9
[8]	Neyens G, Kowalska M, Yordanov D, Blaum K, Himpe P, Lievens P, Mallion S, Neugart R, Vermeulen N, Utsuno Y, Otsuka T 2005 Phys. Rev. Lett. 94 022501
[9]	Schwerdtfeger W, Thirolf P G, Wimmer K, Habs D, Mach H, Rodriguez T R, Bildstein V, Egido J L, Fraile L M, Gernhöuser R, Hertenberger R, Heyde K, Hoff P, Hübel H, Küster U, Kröll T, Krücken R, Lutter R, Morgan T, Ring P 2009 Phys. Rev. Lett. 103 012501
[10]	Grévy S, Angelique J C, Baumann P, Borcea C, Buta A, Canchel G, Catford W N, Courtin S, Daugas J M, Oliveira F, Dessagne P, Dlouhy Z, Knipper A, Kratz K L, Lecolley F R, Lecouey J L, Lehrsenneau G, Lewitowicz M, Lienard E, Lukyanov S, Marechal F, Miehe C, Mrazek J, Negoita F, Orr N A, Pantelica D, Penionzhkevich Y, Peter J, Pffeier B, Pietri S, Poirier E, Sorlin O, Stanoiue M, Stefan I, Stodel C, Timis C 2004 Phys. Lett. B 594 252
[11]	Fridmann J, Wiedenhöover I, Gade A, Baby L T, Bazin D, Brown B A, Campbell C M, Cook J M, Cottle P D, Direnderfer E, Dinca D C, Glasmacher T, Hansen P G, Kemper K W, Lecouey J L, Mueller W F, Olliver H, Rodriguez-Vietez E, Tery J R, Tostevin J A, Yoneda K 2005 Nature 435 922
[12]	Bastin B, Grévy S, Sohler D, Sorlin O, Dombrádi Zs, Achouri N L, Angélique J C, Azaiez F, Baiborodin D, Borcea6 R, Bourgeois C, Buta A, Bürger A, Chapman R, Dalouzy J C , Dlouhy Z, Drouard A, Elekes Z, Franchoo S, Iacob S, Laurent B, Lazar M, Liang X, Liénard E, Mrazek J, Nalpas L, Negoita F, Orr N A, Penionzhkevich Y, Podolyák Zs, Pougheon F, Roussel-Chomaz P, Saint-Laurent M G, Stanoiu M, Stefan I 2007 Phys. Rev. Lett. 99 022503.
[13]	Riley L A, Adrich P, Baugher T R, Bazi D, Brown B A, Cook J M, Cottle P D, Diget C A, Gade A, Garland D A, Glasmacher T, Hosier K E, Kemper K W, Otsuka T, Rae W D M, Ratkiewicz A, Siwek K P, Tostevin J A, Utsuno Y, Weisshaar D 2008 Phys. Rev. C 78 011303
[14]	Caurier E, Nowacki F, Poves A, Retamosa J 1998 Phys. Rev. C 58 2033
[15]	Utsuno Y, Otsuka T, Mizusaki T, Honma M 1999 Phys. Rev. C 60 054315
[16]	Otsuka T, Suzuki T, Honma M, Utsuno Y, Tsunoda N, Tsukiyama K, Hjorth-Jensen M 2010 Phys. Rev. Lett. 104 012501
[17]	Rodriguez-Guzman R, Egido J L, Robledo L M 2000 Phys. Lett. B 474 15
[18]	Nowacki F, Poves A 2009 Phys. Rev. C 79 014310
[19]	Zhi Q J, Ren Z Z 2007 Nucl. Phys. A 794 10
[20]	Ding B G, Lu D H , Zhang D L 2007 Acta. Phys. Sin. 56 6905 (in Chinese) [丁斌刚、鲁定辉、张大立 2007 物理学报 56 6905]
[21]	Ding B G, Zhang D L, Lu D H 2009 Acta. Phys. Sin. 58 865 (in Chinese) [丁斌刚、张大立、鲁定辉 2009 物理学报 58 865]
[22]	Reinhard P G, Dean D J, Nazarewicz W, Dobaczewski J, Maruhn J A, Strayer M 1999 Phys. Rev. C 60 014316

计量

文章访问数: 7700
PDF下载量: 767
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

搜索

留言板