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

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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.

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[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

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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

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Received: 2015-03-19
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通讯作者: 陈斌, bchen63@163.com

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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.

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

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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,

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

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通讯作者: 陈斌, bchen63@163.com

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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,

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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