Direct mass measurements of neutron-rich <sup>86</sup>Kr projectile fragments and the persistence of neutron magic number <em>N</em>=32 in Sc isotopes

XU Xing; WANG Meng; ZHANG Yu-Hu; et al. (BESⅢ collaboration)

doi:10.1088/1674-1137/39/10/104001

Chinese Physics C> 2015, Vol. 39> Issue(10) : 104001 DOI: 10.1088/1674-1137/39/10/104001

Direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

Abstract
HTML
Reference
Related

PDF

Abstract：
In this paper, we present direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments conducted at the HIRFL-CSR facility in Lanzhou by employing the Isochronous Mass Spectrometry (IMS) method. The new mass excesses of ^52-54Sc nuclides are determined to be -40492(82), -38928(114), -34654(540) keV, which show a significant increase of binding energy compared to the reported ones in the Atomic Mass Evaluation 2012 (AME12). In particular, ⁵³Sc and ⁵⁴Sc are more bound by 0.8 MeV and 1.0 MeV, respectively. The behavior of the two neutron separation energy with neutron numbers indicates a strong sub-shell closure at neutron number N=32 in Sc isotopes.

References

[1]

Elsasser W. J. de Phys. et Rad., 1934, 5: 625[2] Goeppert Mayer M. Phys. Rev. 1949, 75: 1969-1970[3] Blaum K. Phys. Rep., 2006, 425: 1-78[4] Lunney D et al. Rev. Mod. Phys., 2003, 75: 1021[5] Ozawa A et al. Phys. Rev. Lett., 2000, 84: 5493-5495[6] Hoffman C R et al. Phys. Rev. Lett., 2008, 100: 152502[7] Kanungo R et al. Phys. Rev. Lett., 2009, 102: 152501[8] Savajols H et al. Eur. Phys. J. A, 2005, 25: 23[9] Sarazin F et al. Phys. Rev. Lett., 2000, 84: 5062[10] Jurado B et al. Phys. Lett. B, 2007, 649: 43[11] Ringle R et al. Phys. Rev. C, 2009, 80: 064321[12] Otsuka T et al. Phys. Rev. Lett., 2001, 87: 082502[13] Gade A et al. Phys. Rev. C, 2006, 74: 021302(R)[14] Janssens R V F et al. Phys. Lett. B, 2002, 546: 55[15] Prisciandaro J I et al. Phys. Lett. B, 2001, 510: 17[16] Gallant A T et al. Phys. Rev. Lett., 2012, 109: 032206[17] Wienholtz F et al. Nature, 2013, 498: 346-349[18] Audi G, WANG M et al. Chin. Phys. C, 2012, 36: 1287-1602[19] WANG M, Audi G et al. Chin. Phys. C, 2012, 36: 1603-2014[20] ZHAN W L et al. Nucl. Phys. A, 2010, 834: 694c[21] Radon T, Kerscher T, Schlitt B et al. Phys. Rev. Lett., 1997, 78: 4701[22] Hausmann M et al. Nucl. Instrum. Methods in Phys. Res. A, 2002, 488: 11-25[23] Franzke B, Geissel H, Münzenberg. Mass. Spectrom. Rev., 2008, 27: 428-469[24] Bosch F, Litvinov Y A, StHlker T Prog. in Par. and Nucl. Phys, 2013, 73: 84-140[25] XIA J W, ZHAN W L, WEI B W et al. Nucl. Instrum. Methods in Phys. Res. A, 2002, 488: 11-25[26] TU X L, XU H S, WANG M et al. Phys. Rev. Lett., 2011, 106: 112501[27] MEI B, TU X L, WANG M et al. Nucl. Instrum. Methods in Phys. Res. A, 2010, 624: 109-113[28] TU X L, WANG M, Litvinov Y A et al. Nucl. Instrum. Methods in Phys. Res. A, 2011, 654: 213-218[29] XU H S, ZHANG Y H, Litvinov Y A Int. J. Mass Spectrom., 2013, 349-350: 162-171[30] Shuai P et al. arXiv:1407.3459[31] Matos M, Ph.D. thesis, Justus-Liebig-Universitat Giessen, 2004[32] TU X L et al. Z. Phys. A Atomic Nuclei, 1990, 337: 361-366[33] Seifert H L et al. Z. Phys. A Atomic Nuclei, 1994, 349: 25-31[34] BAI Y et al. AIP Conf. Proc, 1998, 455: 90[35] Estrade A et al. Phys. Rev. Lett., 2011, 107: 172503

[1]	Da-Li Zhang , Cheng-Fu Mu . Shape coexistence close to N=50 in the neutron-rich isotope ⁸⁰Ge investigated by IBM-2. Chinese Physics C, 2018, 42(3): 034101. doi: 10.1088/1674-1137/42/3/034101
[2]	Si-Jie Dai , Fu-Rong Xu , Jian-Guo Li , Bai-Shan Hu , Zhong-Hao Sun . Continuum effect in resonance spectra of neutron-rich oxygen isotopes. Chinese Physics C, 2018, 42(11): 114106. doi: 10.1088/1674-1137/42/11/114106
[3]	Fei Niu , Chun-Wang Ma . Pairing-energy coefficients of neutron-rich fragments in spallation reactions. Chinese Physics C, 2018, 42(3): 034102. doi: 10.1088/1674-1137/42/3/034102
[4]	Zhong Xu , Zhi-Pan Li . Microscopic analysis of octupole shape transitions in neutron-rich actinides with relativistic energy density functional. Chinese Physics C, 2017, 41(12): 124107. doi: 10.1088/1674-1137/41/12/124107
[5]	Mian Yu , Hui-Ling Wei , Yi-Dan Song , Chun-Wang Ma . Experimental determination of one-and two-neutron separation energies for neutron-rich copper isotopes. Chinese Physics C, 2017, 41(9): 094001. doi: 10.1088/1674-1137/41/9/094001
[6]	ZHANG Dong-Hong , XIE Wen-Jie , SU Jun , ZHANG Feng-Shou . Production cross section of neutron-rich calcium isotopes in heavy ion collisions. Chinese Physics C, 2015, 39(4): 044103. doi: 10.1088/1674-1137/39/4/044103
[7]	GAO Bing-Shui , ZHOU Xiao-Hong , FANG Yong-De , ZHANG Yu-Hu , LIU Min-Liang , WANG Si-Cheng , WANG Jian-Guo , MA Fei , GUO Ying-Xiang , WU Xiao-Guang , HE Chuang-Ye , ZHENG Yun , WANG Zhi-Min , YAN Xin-Liang , WANG Zhi-Gang , FANG Fang . Identification of a 9/2^-[505] isomer in the neutron-rich ¹⁹³Os nucleus. Chinese Physics C, 2014, 38(6): 064001. doi: 10.1088/1674-1137/38/6/064001
[8]	MA Chun-Wang , SONG Heng-Li , PU Jie , ZHANG Tong-Lin , ZHANG Sha , WANG Shan-Shan , ZHAO Xin-Li , CHEN Li . Symmetry energy from neutron-rich fragments in heavy-ion collisions, and its dependence on incident energy, and impact parameters. Chinese Physics C, 2013, 37(2): 024102. doi: 10.1088/1674-1137/37/2/024102
[9]	BAI Hong-Bo , LI Xiao-Wei . Shape phase transition in neutron-rich even-even light nuclei with Z=20-28. Chinese Physics C, 2011, 35(10): 925-929. doi: 10.1088/1674-1137/35/10/007
[10]	MA Chun-Wang , WANG Shan-Shan . Isospin dependence of projectile fragmentation and neutron-skin thickness of neutron-rich nuclei. Chinese Physics C, 2011, 35(11): 1017-1021. doi: 10.1088/1674-1137/35/11/007
[11]	MA Chun-Wang , WEI Hui-Ling , ZHANG Yan-Fang , LIU Gao-Jie , WANG Jun-Yang , TANG Kai . A revisit to the neutron skin thickness of neutron-rich nuclei in the statistical abrasion ablation model. Chinese Physics C, 2010, 34(9): 1469-1471. doi: 10.1088/1674-1137/34/9/074
[12]	YUAN Cen-Xi , QI Chong , XU Fu-Rong . Shell-model studies of the N=14 and 16 shell closures in neutron-rich nuclei. Chinese Physics C, 2009, 33(S1): 55-57. doi: 10.1088/1674-1137/33/S1/018
[13]	YANG Yun-Yi , ZHU Sheng-Jiang , DING Huai-Bo , WANG Jian-Guo , XU Qiang , GU Long . High-spin states in neutron-rich ¹⁰²Mo nucleus. Chinese Physics C, 2009, 33(S1): 199-201. doi: 10.1088/1674-1137/33/S1/064
[14]	GU Long , ZHU Sheng-Jiang , XU Qiang , CHE Xing-Lai , WANG Jian-Guo , DING Huai-Bo , YANG Yun-Yi . High spin states in neutron-rich ¹⁰⁶Tc nucleus. Chinese Physics C, 2009, 33(S1): 182-184. doi: 10.1088/1674-1137/33/S1/058
[15]	ZHU Sheng-Jiang , WANG Jian-Guo , CHE Xing-Lai , DING Huai-Bo , XU Qiang , GU Long , YANG Yun-Yi . Search for chiral bands in A~110 neutron-rich nuclei. Chinese Physics C, 2009, 33(S1): 145-147. doi: 10.1088/1674-1137/33/S1/046
[16]	DING Huai-Bo , ZHU Sheng-Jiang , WANG Jian-Guo , CHE Xing-Lai , GU Long . Extended collective bands in neutron-rich ¹⁰⁹Ru. Chinese Physics C, 2009, 33(S1): 154-157. doi: 10.1088/1674-1137/33/S1/049
[17]	CHEN Yong-Jing , CHEN Yong-Shou , GAO Zao-Chun , ZHU Sheng-Jiang . Theoretical description of octupole deformed band in neutron-rich even-even Ba isotopes. Chinese Physics C, 2008, 32(S2): 158-161.
[18]	Yang Weifan , Yuan Shuanggui , Zhang Xueqian , Yu Xian , Mou Wantong , Li Zhongwei , Gan Zaiguo , Liu Hongye , Guo Junsheng , Zhong Jiquan , Sun Xiangfu . Synthesis and Gamma Decay of New Heavy Neutron-Rich Isotope ¹⁷⁵Er. Chinese Physics C, 1996, 20(S1): 1-2.
[19]	Zhang Changhua , Gu Jinnan . Shell Model Calculation for Light Neutron-Rich Nuclei. Chinese Physics C, 1996, 20(S2): 165-170.
[20]	Yang Weifan , Yuan Shuanggui , Mou Wantong , Zhang Xueqian , Li Zongwei , Yu Xian , Gan Zaiguo , Liu Hongye , Guo Yingxiang , Zhao Jinhua , Lei Xiangguo , Guo Junsheng , Du Yifei , Zhao Lili , Zhang Xiang . A New Heavy Neutron-Rich Isotope ²³⁹Pa. Chinese Physics C, 1995, 19(S3): 221-222.

Access

Get Citation

XU Xing, WANG Meng, ZHANG Yu-Hu and et al. (BESⅢ collaboration). Direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes[J]. Chinese Physics C, 2015, 39(10): 104001. doi: 10.1088/1674-1137/39/10/104001

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2015-03-19
Revised: 1900-01-01

Article Metric

Article Views(1731)
PDF Downloads(20)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

Corresponding author: WANG Meng,

Corresponding author: ZHANG Yu-Hu,

Received Date: 2015-03-19

Accepted Date: 1900-01-01

Available Online: 2015-10-10

Abstract: In this paper, we present direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments conducted at the HIRFL-CSR facility in Lanzhou by employing the Isochronous Mass Spectrometry (IMS) method. The new mass excesses of ^52-54Sc nuclides are determined to be -40492(82), -38928(114), -34654(540) keV, which show a significant increase of binding energy compared to the reported ones in the Atomic Mass Evaluation 2012 (AME12). In particular, ⁵³Sc and ⁵⁴Sc are more bound by 0.8 MeV and 1.0 MeV, respectively. The behavior of the two neutron separation energy with neutron numbers indicates a strong sub-shell closure at neutron number N=32 in Sc isotopes.

HTML

Reference (1)

Direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

Corresponding author: WANG Meng,

Corresponding author: ZHANG Yu-Hu,

HTML

目录

Direct mass measurements of neutron-rich 86Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Direct mass measurements of neutron-rich 86Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

Corresponding author: WANG Meng,

Corresponding author: ZHANG Yu-Hu,

HTML

目录

Direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

Direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes