等时性质量谱仪中<em>N</em>=<em>Z</em>核质量测量的方法探索

葛壮; 王茜; 王猛; 上坂友洋

doi:10.11804/NuclPhysRev.36.03.294

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等时性质量谱仪中N=Z核质量测量的方法探索

葛壮, 王茜, 王猛, 上坂友洋

文章导航 > 原子核物理评论 > 2019 > 36(3): 294-304

葛壮, 王茜, 王猛, 上坂友洋. 等时性质量谱仪中N=Z核质量测量的方法探索[J]. 原子核物理评论, 2019, 36(3): 294-304. doi: 10.11804/NuclPhysRev.36.03.294

引用本文:

葛壮, 王茜, 王猛, 上坂友洋. 等时性质量谱仪中N=Z核质量测量的方法探索[J]. 原子核物理评论, 2019, 36(3): 294-304. doi: 10.11804/NuclPhysRev.36.03.294

GE Zhuang, WANG Qian, WANG Meng, UESAKA Tomohiro. Study of Mass-measurement Method for N=Z Nuclei with Isochronous Mass Spectrometry[J]. Nuclear Physics Review, 2019, 36(3): 294-304. doi: 10.11804/NuclPhysRev.36.03.294

Citation:

GE Zhuang, WANG Qian, WANG Meng, UESAKA Tomohiro. Study of Mass-measurement Method for N=Z Nuclei with Isochronous Mass Spectrometry[J]. Nuclear Physics Review, 2019, 36(3): 294-304. doi: 10.11804/NuclPhysRev.36.03.294

等时性质量谱仪中N=Z核质量测量的方法探索

doi: 10.11804/NuclPhysRev.36.03.294

葛壮^1,2,3,
王茜^1,2,
王猛^1,2,
上坂友洋³

1.
中国科学院近代物理研究所, 兰州 730000;
2.
中国科学院大学核科学与技术学院, 北京 100049;
3.
日本理化学研究所, 日本和光 351-0198

基金项目: 国家自然科学基金资助项目（11605248，11605249，11605267，11805032）

详细信息

作者简介:
葛壮(1988-),男,湖北孝感人,博士研究生,从事粒子物理与原子核物理研究;E-mail:gezhuang@impcas.ac.cn。

中图分类号: TL67

Study of Mass-measurement Method for N=Z Nuclei with Isochronous Mass Spectrometry

1.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
2.
School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China;
3.
RIKEN, Wako 351-0198, Japan

Funds: National Natural Science Foundation of China(11605248, 11605249, 11605267, 11805032)

摘要: N=Z核的质量数据对于研究rp-和νp-过程至关重要。此外，N=Z原子核的质量数据将会帮助我们解决与核结构有关的许多关键问题。结合碎片分离器的等时性质谱仪（Isochronous mass spectrometry，IMS）是十分快速有效而且高分辨的质量测量工具。由于N=Z核的m/q值非常接近，目前国际上的储存环质量谱仪CSRe/IMP和ESR/GSI还无法实现对N=Z核运用飞行时间谱进行鉴别，因而无法对它们进行质量测量。在日本理化学研究所的仁科加速器中心新建了专用的等时性质谱仪（IMS），即稀有放射性同位素储存环"Rare-RI Ring"（R3），以确定短寿命的放射性原子核的质量，其目标质量相对精度为10^-6。R3质谱仪与高分辨的碎片分离器BigRIPS的组合，运用束流线的高分辨的离子鉴别，使得R3上的IMS方法对N=Z核进行质量测量成为可能。本文设计了专用的等时性束流光学设置，模拟了¹²⁴Xe的主束经过碎裂反应产生的N=Z核在束流线中穿过各焦平面的径迹、能量、速度等信息，同时检验了这些次级束在环内的飞行时间相对于动量的变化关系。模拟的结果表明：当储存环的等时性光学设置在某一个N=Z核时，所有其它N=Z核在环内的回旋时间也与动量弥散无关，说明了这些核也满足等时性条件。基于N=Z核的这种等时性的特点，本文对R3上刻度N=Z核的方法也进行了讨论。
- 起量测量 /
- 储存环 /
- 模拟 /
- 束流光学 /
- 等时性质量谱仪 /
- N=Z原子核
Abstract: Nuclear mass data of N=Z nuclei is crucial for the investigation of the rp-and the νp-processes. In addition, access to the nuclei on the N=Z line will help us solve key questions relating to many open questions of nuclear structure. Isochronous mass spectrometry (IMS) combined with a fragment separator is a very fast, efficient and high resolution mass measurement tool. Since the m/q values of the N=Z nuclei are very close, the current storage ring mass spectrometers CSRe/IMP and ESR/GSI cannot realize the identification of the N=Z ions of different species via revolution time spectrum, so it is impossible to realize mass measurements on them. An IMS using a newly constructed storage ring named the ‘Rare-RI Ring’ (R3) has been implemented at the RIKEN Nishina Center to determine the masses of short-lived rare nuclei with a relative precision of the order of 10^-6. With the R3 operated as an IMS coupled to the high-resolution beam-line BigRIPS employed as a fragment separator, high-resolution particle identification of the N=Z nuclei on an event-by-event basis with the beam-line before their injection to R3 makes the mass measurements possible. Monte Carlo simulation studies of beam tracking, high-resolution particle identification and selection of the secondary beams have been carried out with a dedicated ion-optics design. The results show that the revolution time of all the N=Z nuclei are independent of momentum dispersion in the storage ring when we set one species of N=Z nucleus in an isochronous condition. The mass calibration method for the N=Z nuclei has also been discussed in this report based on the simulation.
- Mass measurement /
- Storage ring /
- Simulation /
- Ion-optics /
- Isochronous mass spectrometry /
- N=Z nuclei

[1]	LUNNEY D, PEARSON J M, THIBAULT C. Review of Modern Physics, 2003, 75:1021.
[2]	BLAUM K. Physics Reports, 2006, 425:1.
[3]	BOSCH F, LITVINOV Y A, STOHLKER T. Prog Part Nucl Phys, 2013, 73:84.
[4]	XU H S, ZHANG Y H, LITVINOV Y A. International Journal of Mass Spectrometry, 2013, 349-350:162.
[5]	MEI B, TU X L, WANG M, et al. Nucl Instr Meth Phys Res A, 2010, 624:109.
[6]	TU X L, WANG M, LITVINOV Y A.et al. Nucl Instr and Met A, 2011, 654:213.
[7]	ZHANG W, TU X L, WANG M, et al. Nucl Instr and Meth A, 2014, 756:1.
[8]	FRANZKE B, GEISSEL H, MÜNZENBERG G. Mass Spectrom Rev, 2008, 27(5):428.
[9]	YANO Y. Nucl Instr and Meth B, 2007, 261:1009.
[10]	KUBO T, KAMEDA D, SUZAKI H, et al. Prog Theor Exp Phys, 2012, 2012:03C003.
[11]	OZAWA A, UESAKA T, WAKASUGI M, et al. Prog Theor Exp Phys, 2012, 2012:03C009.
[12]	UESAKA T, SHIMOURA S, SAKAI H, et al. Prog Theor Exp Phys, 2012, 2012:03C007.
[13]	YAMAGUCHI Y, WAKASUGI M, UESAKA T, et al. Nucl Instr and Meth Pl B, 2013, 317:629.
[14]	FRANZKE B. Nucl Instr and Meth B, 1987, 24:18-25.
[15]	XIA J W, ZHAN W L, WEI B W, et al. Nucl Instr and Meth A, 2002, 488(1-2):11.
[16]	MAKINO K and BERZ M. Nucl Instr and Meth A, 2006, 558:346.
[17]	IWASA N, WEICK H, and GEISSEL H. Nucl Instr and Metho B, 2011, 269:752.
[18]	GROTE H and SCHMIDT F. Particle Accelerator Conference 2003. Proceedings of the. IEEE, 2003:3497.
[19]	KUMAGAI H, OZAWA A, FUKUDA N,et al. Nucl Instr and Meth A, 2001, 470:562.
[20]	KIMURA K, IZUMIKAWAB T, KOYAMA R, et al. Nucl Instr and Meth A, 2005538:608.
[21]	MEISEL Z, GEORGE S. International Journal of Mass Spectrometry, 2013, 349-350:145.
[22]	MICHIMASA S, KOBAYASHI M, KIYOKAWA Y, et al. Phys Rev Lett, 2018, 121:022506.
[23]	GEISSEL H, LITVINOV Y A. J Phys G:Nucl Part Phys, 2005, 31(10):S1779.
[24]	ZHUANG W, TU X L, WANG M, et al. Nucl Instr and Meth A, 2014, 756:1.
[25]	XING Y M, WANG M, ZHANG Y H, et al. Phys Scr, 2015, T166:014010..
[26]	XU X, WANG M, SHUAI P, et al. Chin Phys C, 2015, 39(10):106201.
[27]	SHUAI P, XU X, ZHANG Y H, et al. Nucl Instr and Meth B, 2016, 376:311.
[28]	XU X, WANG M, ZHANG Y H, et al. Nuclear Physics Review, 2016, 33(2):156.
[29]	SHUAI P, TU X, ZHANG Y H, et al. Nuclear Physics Review, 2016, 33(2):173.
[30]	ZHANG Y H, WANG M, LITVINOV Y A, et al. Nuclear Physics Review, 2016, 33(2):122.
[31]	WANG M. Nuclear Physics Review, 2017, 34(3):380.
[32]	AUDI G, KONDEV F G, WANG M, et al. Chin Phys C, 2012, 36(12):1157.
[33]	AUDI G, WANG M, WAPSTRA A H, et al. Chin Phys C, 2012, 36(12):1287.
[34]	WANG M, AUDI G, WAPSTRA A H, et al. Chin Phys C, 2012, 36(12):1603.

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等时性质量谱仪中N=Z核质量测量的方法探索

doi: 10.11804/NuclPhysRev.36.03.294

1. 中国科学院近代物理研究所, 兰州 730000;

2. 中国科学院大学核科学与技术学院, 北京 100049;

3. 日本理化学研究所, 日本和光 351-0198

基金项目: 国家自然科学基金资助项目（11605248，11605249，11605267，11805032）

作者简介:
葛壮(1988-),男,湖北孝感人,博士研究生,从事粒子物理与原子核物理研究;E-mail:gezhuang@impcas.ac.cn。

收稿日期: 2019-03-30
修回日期: 2019-04-20
刊出日期: 2019-09-20

中图分类号: TL67

关键词:

起量测量 /

储存环 /

模拟 /

束流光学 /

等时性质量谱仪 /

N=Z原子核

摘要: N=Z核的质量数据对于研究rp-和νp-过程至关重要。此外，N=Z原子核的质量数据将会帮助我们解决与核结构有关的许多关键问题。结合碎片分离器的等时性质谱仪（Isochronous mass spectrometry，IMS）是十分快速有效而且高分辨的质量测量工具。由于N=Z核的m/q值非常接近，目前国际上的储存环质量谱仪CSRe/IMP和ESR/GSI还无法实现对N=Z核运用飞行时间谱进行鉴别，因而无法对它们进行质量测量。在日本理化学研究所的仁科加速器中心新建了专用的等时性质谱仪（IMS），即稀有放射性同位素储存环"Rare-RI Ring"（R3），以确定短寿命的放射性原子核的质量，其目标质量相对精度为10^-6。R3质谱仪与高分辨的碎片分离器BigRIPS的组合，运用束流线的高分辨的离子鉴别，使得R3上的IMS方法对N=Z核进行质量测量成为可能。本文设计了专用的等时性束流光学设置，模拟了¹²⁴Xe的主束经过碎裂反应产生的N=Z核在束流线中穿过各焦平面的径迹、能量、速度等信息，同时检验了这些次级束在环内的飞行时间相对于动量的变化关系。模拟的结果表明：当储存环的等时性光学设置在某一个N=Z核时，所有其它N=Z核在环内的回旋时间也与动量弥散无关，说明了这些核也满足等时性条件。基于N=Z核的这种等时性的特点，本文对R3上刻度N=Z核的方法也进行了讨论。

English Abstract

Study of Mass-measurement Method for N=Z Nuclei with Isochronous Mass Spectrometry

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China;

3. RIKEN, Wako 351-0198, Japan

Funds: National Natural Science Foundation of China(11605248, 11605249, 11605267, 11805032)

Received Date: 2019-03-30
Rev Recd Date: 2019-04-20
Publish Date: 2019-09-20

Keywords:

Abstract: Nuclear mass data of N=Z nuclei is crucial for the investigation of the rp-and the νp-processes. In addition, access to the nuclei on the N=Z line will help us solve key questions relating to many open questions of nuclear structure. Isochronous mass spectrometry (IMS) combined with a fragment separator is a very fast, efficient and high resolution mass measurement tool. Since the m/q values of the N=Z nuclei are very close, the current storage ring mass spectrometers CSRe/IMP and ESR/GSI cannot realize the identification of the N=Z ions of different species via revolution time spectrum, so it is impossible to realize mass measurements on them. An IMS using a newly constructed storage ring named the ‘Rare-RI Ring’ (R3) has been implemented at the RIKEN Nishina Center to determine the masses of short-lived rare nuclei with a relative precision of the order of 10^-6. With the R3 operated as an IMS coupled to the high-resolution beam-line BigRIPS employed as a fragment separator, high-resolution particle identification of the N=Z nuclei on an event-by-event basis with the beam-line before their injection to R3 makes the mass measurements possible. Monte Carlo simulation studies of beam tracking, high-resolution particle identification and selection of the secondary beams have been carried out with a dedicated ion-optics design. The results show that the revolution time of all the N=Z nuclei are independent of momentum dispersion in the storage ring when we set one species of N=Z nucleus in an isochronous condition. The mass calibration method for the N=Z nuclei has also been discussed in this report based on the simulation.

葛壮, 王茜, 王猛, 上坂友洋. 等时性质量谱仪中N=Z核质量测量的方法探索[J]. 原子核物理评论, 2019, 36(3): 294-304. doi: 10.11804/NuclPhysRev.36.03.294

引用本文:

葛壮, 王茜, 王猛, 上坂友洋. 等时性质量谱仪中N=Z核质量测量的方法探索[J]. 原子核物理评论, 2019, 36(3): 294-304. doi: 10.11804/NuclPhysRev.36.03.294

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等时性质量谱仪中N=Z核质量测量的方法探索

doi: 10.11804/NuclPhysRev.36.03.294

作者简介: 葛壮(1988-),男,湖北孝感人,博士研究生,从事粒子物理与原子核物理研究;E-mail:gezhuang@impcas.ac.cn。

Study of Mass-measurement Method for N=Z Nuclei with Isochronous Mass Spectrometry

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等时性质量谱仪中N=Z核质量测量的方法探索

doi: 10.11804/NuclPhysRev.36.03.294

1. 中国科学院近代物理研究所, 兰州 730000; 2. 中国科学院大学核科学与技术学院, 北京 100049; 3. 日本理化学研究所, 日本 和光 351-0198

作者简介: 葛壮(1988-),男,湖北孝感人,博士研究生,从事粒子物理与原子核物理研究;E-mail:gezhuang@impcas.ac.cn。

English Abstract

Study of Mass-measurement Method for N=Z Nuclei with Isochronous Mass Spectrometry

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; 2. School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China; 3. RIKEN, Wako 351-0198, Japan

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作者简介:
葛壮(1988-),男,湖北孝感人,博士研究生,从事粒子物理与原子核物理研究;E-mail:gezhuang@impcas.ac.cn。

1. 中国科学院近代物理研究所, 兰州 730000;

2. 中国科学院大学核科学与技术学院, 北京 100049;

3. 日本理化学研究所, 日本和光 351-0198

作者简介:
葛壮(1988-),男,湖北孝感人,博士研究生,从事粒子物理与原子核物理研究;E-mail:gezhuang@impcas.ac.cn。

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China;

3. RIKEN, Wako 351-0198, Japan