基于(p,)-(,p)平衡近似的快质子俘获过程模型及其应用

张珈铭; 徐晓栋; 孙保华

doi:10.7498/aps.62.132501

摘要

在(p,)-(,p)平衡近似下,本文建立了简化的快质子俘获(rp)过程模型, 讨论了天体物理条件输入量 (即质子辐照时间、质子数密度及温度) 对rp过程的影响. 结合中国科学院近代物理研究所等时性质谱仪 (IMS) 上的最新实验数据, 本文进而分析了新测的缺中子原子核质量对rp过程的影响; 发现利用新测的41Ti质量, A=41处的丰度相较之前的计算结果增大了两个数量级, 而计算的相对丰度误差减小了近两个量级.

关键词:

Abstract

Many of the stable nuclei at the neutron-deficient side of the beta-stability valley cannot be synthesized in the neutron-capture processes. The origin of the so-called p-nuclei has been a long standing question in the nuclear astrophysics. The rapid-proton capture process (rp-process) proposed in the 1980s was one of the possible mechanisms to be responsible for some light p-nuclei. In this work, a model for rapid-proton capture process (rp-process), within the (p,)-(,p) equilibrium approximation, is established. In the framework of this model, the influence of astrophysical conditions (i.e., proton number density, temperature, and proton irradiation time) on the rp-abundance pattern is investigated. In addition, the recent-measured mass data of neutron-deficient atomic nuclei by using the storage ring mass spectrometry at IMP, Lanzhou, are employed in our calculation. It is found that the abundance at A=41 is increased by two orders of magnitude when using the new by determined mass of 41Ti, while the uncertainty of the computed abundance is reduced by almost two orders of magnitude.

Keywords:

作者及机构信息

1.
北京航空航天大学物理科学与核能工程学院, 北京 100191;

2.
北京师范大学物理学系, 北京 100875;

3.
宇宙中的原子核物理和粒子物理国际研究中心, 北京 100191

基金项目: 新世纪优秀人才支持计划(批准号: NCET-09-0031);国家重点基础研究发展计划(973 项目)(批准号: 2013CB834400);国家自然科学基金(批准号: 10975008, 11035007, 11105010, 11128510, 11235002)和软件开发环境国家重点实验室自主研究课题资助(批准号: SKLSDE-2011ZX-18)资助的课题.

Authors and contacts

1.
School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China;

2.
Department of Physics, Beijing Normal University, Beijing 100875, China;

3.
International Research Center for Nuclei and Particles in the Cosmos, Beijing 100191, China

Funds: Project supported by the Program for New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-09-0031), the National Basearch Program of China (Grant No. 2013CB834400), the National Natural Science Foundation of China (Grant Nos. 10975008, 11035007, 11105010, 11128510, 11235002), and the Research Fund of State Key Laboratory of Software Development Environment, China (Grant No. SKLSDE-2011ZX-18).

参考文献

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[2]	Burbidge E M, Burbidge G R, Fowler W A, Hoyle F 1957 Rev. Mod. Phys. 29 547
[3]	Cameron A G W 1957 Chalk River Report CRL-41
[4]	Lambert D L 1992 Astron. Astrophys. 3 201
[5]	Woosley S E, Howard W M 1978 Astrophys. J. (Suppl.) 36 285
[6]	Howard W M, Meyer B S, Woosley S E 1991 Astrophys. J. 373 L5
[7]	Arnould M, Goriely S 2003 Phys. Rep. 384 1
[8]	Jose J, Iliadis C 2011 Rep. Prog. Phys. 74 096901
[9]	Wallace R K, Woosley S E 1981 Astrophys. J. (Suppl.) 45 389
[10]	Schatz H, Aprahamian A, Gorres J, Wiescher M, Rauscher T, Rembges J F, Thielemann F K, Pfeiffer B, Möller P, Kratz K L, Herndl H, Brown B A, Rebel H 1998 Phys. Rep. 294 167
[11]	Champagne A E, Wiescher M 1992 Annu. Rev. Nucl. Part. Sci. 42 39
[12]	Haettner E, Ackermann D, Audi G, Blaum K, Block M, Eliseev S, Fleckenstein T, Herfurth F, Hebberger F P, Hofmann S, Ketelaer J, Ketter J, Kluge H J, Marx G, Mazzocco M, Novikov Yu N, Plab W R, Rahaman S, Rauscher T, Rodríguez D, Schatz H, Scheidenberger C, Schweikhard L, Sun B, Thirolf P G, Vorobjev G, Wang M, Weber C 2011 Phys. Rev. Lett. 106 122501
[13]	Schatz H, Aprahamian A, Barnard V, Bildsten L, Cumming A, Ouellette M, Rauscher T, Thielemann F K, Wiescher M 2001 Phys. Rev. Lett. 86 3471
[14]	Ayasli S, Joss P C 1982 Astrophys. J. 256 637
[15]	Taam R E, Woosley S E, Weaver T A, Lamb D Q 1993 Astrophys. J. 413 324
[16]	Van Wormer L, Gorres J, Iliadis C, Wiescher M 1994 Astrophys. J. 432 326
[17]	Schatz H, Rehm K E 2006 Nucl. Phys. A 777 601
[18]	Sun B, Montes F, Geng L S, Geissel H, Litvinov Y A, Meng J 2008 Phys. Rev. C 78 025806
[19]	Sun B H, Meng J 2008 Chin. Phys. Lett. 25 2429
[20]	Niu Z M, Sun B H, Meng J 2009 Phys. Rev. C 80 065806
[21]	Li Z, Niu Z M, Sun B H, Wang N, Meng J 2012 Acta Phys. Sin. 61 072601 (in Chinese) [李竹, 牛中明, 孙保华, 王宁, 孟杰 2012 61 072601]
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[25]	Xu H S, Tu X L, Yuan Y J, Xia J W, Zang Y D, Wang M, Mao R S, Hu Z G, Mei B, Shuai P, Zhu Z C, Tang S W, Geng P, Liu Yong, Zhao T C, Zhang HANG X Y, Yang J C, Mao L J, Zhang Y H, Zhou X H, Huang W X, Xiao G Q, Zhao H W, Zhan W L 2009 Chin. Sci. Bull. 54 4749
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[27]	Tu X L, Wang M, Litvinov Yu A, Zhang Y H, Xua H S, Sun Z Y, Audi G, Blaum K, Du C M, Huang W X, Hu Z G, Geng P, Jin S L, Liu L X, Liu Y, Mei B, Mao R S, Ma X W, Suzuki H, Shuai P, Sun Y, Tang S W, Wang J S, Wang S T, Xiao G Q, Xu X, Xia J W, Yang J C, Ye R P, Yamaguchi T, Yan X L, Yuan Y J, Yamaguchi Y, Zang Y D, Zhao H W, Zhao T C, Zhang X Y, Zhou X H, Zhan W L 2011 Nucl. Instrum. Methods Phys. Res. Sect. A 654 213
[28]	Zhang Y H, Xu H S, Litvinov Yu A, Tu X L, Yan X L, Typel S, Blaum K, Wang M, Zhou X H, Sun Y, Brown B A, Yuan Y J, Xia J W, Yang J C, Audi G, Chen X C, Jia G B, Hu Z G, Ma X W, Mao R S, Mei B, Shuai P, Sun Z Y, Wang S T, Xiao G Q, Xu X, Yamaguchi T, Yamaguchi Y, Zhang Y D, Zhao H W, Zhao T C, Zhang W, Zhan W L 2012 Phys. Rev. Lett. 109 102501
[29]	Yan X L, Xu H S, Litvinov Yu A, Zhang Y H, Schatz H, Tu X L, Blaum K, Zhou X H, Sun B H, He J J, Sun Y, Wang M, Yuan Y J, Xia J W, Yang J C, Audi G, Jia G B, Hu Z G, Ma X W, Mao R S, Mei B, Shuai P, Sun Z Y, Wang S T, Xiao G Q, Xu X, Yamaguchi T, Yamaguchi Y, Zang Y D, Zhao H W, Zhao T C, Zhang W, Zhan W L 2013 APJ 766 L8
[30]	Zhou Xiao-Hong, Yan Xin-Liang, Tu Xiao-Lin, Wang Meng 2010 Precise mass measurement of nuclides. Physics 39 659 (in Chinese) [周小红, 颜鑫亮, 涂小林, 王猛 2010 物理 39 659]
[31]	Sun Bao-Hua, Meng Jie 2010 Progress in precision mass measurements of atomic nuclei. Physics 39 666 (in Chinese) [孙保华, 孟杰 2010 物理 39 666]

施引文献

[1]	Suess H E, Urey H C 1956 Rev. Mod. Phys. 28 53
[2]	Burbidge E M, Burbidge G R, Fowler W A, Hoyle F 1957 Rev. Mod. Phys. 29 547
[3]	Cameron A G W 1957 Chalk River Report CRL-41
[4]	Lambert D L 1992 Astron. Astrophys. 3 201
[5]	Woosley S E, Howard W M 1978 Astrophys. J. (Suppl.) 36 285
[6]	Howard W M, Meyer B S, Woosley S E 1991 Astrophys. J. 373 L5
[7]	Arnould M, Goriely S 2003 Phys. Rep. 384 1
[8]	Jose J, Iliadis C 2011 Rep. Prog. Phys. 74 096901
[9]	Wallace R K, Woosley S E 1981 Astrophys. J. (Suppl.) 45 389
[10]	Schatz H, Aprahamian A, Gorres J, Wiescher M, Rauscher T, Rembges J F, Thielemann F K, Pfeiffer B, Möller P, Kratz K L, Herndl H, Brown B A, Rebel H 1998 Phys. Rep. 294 167
[11]	Champagne A E, Wiescher M 1992 Annu. Rev. Nucl. Part. Sci. 42 39
[12]	Haettner E, Ackermann D, Audi G, Blaum K, Block M, Eliseev S, Fleckenstein T, Herfurth F, Hebberger F P, Hofmann S, Ketelaer J, Ketter J, Kluge H J, Marx G, Mazzocco M, Novikov Yu N, Plab W R, Rahaman S, Rauscher T, Rodríguez D, Schatz H, Scheidenberger C, Schweikhard L, Sun B, Thirolf P G, Vorobjev G, Wang M, Weber C 2011 Phys. Rev. Lett. 106 122501
[13]	Schatz H, Aprahamian A, Barnard V, Bildsten L, Cumming A, Ouellette M, Rauscher T, Thielemann F K, Wiescher M 2001 Phys. Rev. Lett. 86 3471
[14]	Ayasli S, Joss P C 1982 Astrophys. J. 256 637
[15]	Taam R E, Woosley S E, Weaver T A, Lamb D Q 1993 Astrophys. J. 413 324
[16]	Van Wormer L, Gorres J, Iliadis C, Wiescher M 1994 Astrophys. J. 432 326
[17]	Schatz H, Rehm K E 2006 Nucl. Phys. A 777 601
[18]	Sun B, Montes F, Geng L S, Geissel H, Litvinov Y A, Meng J 2008 Phys. Rev. C 78 025806
[19]	Sun B H, Meng J 2008 Chin. Phys. Lett. 25 2429
[20]	Niu Z M, Sun B H, Meng J 2009 Phys. Rev. C 80 065806
[21]	Li Z, Niu Z M, Sun B H, Wang N, Meng J 2012 Acta Phys. Sin. 61 072601 (in Chinese) [李竹, 牛中明, 孙保华, 王宁, 孟杰 2012 61 072601]
[22]	Zhang W H, Niu Z M, Wang F, Gong X B, Sun B H 2012 Acta Phys. Sin. 61 112601 (in Chinese) [张蔚泓, 牛中明, 王枫, 龚孝波, 孙保华 2012 61 112601]
[23]	Xu X D, Sun B H, Niu Z M, Li Z, Qian Y Z, Meng J 2013 Phys. Rev. C 87 015805
[24]	JINA Reaclib Database Cyburt R H, Amthor A M, Ferguson R, Meisel Z, Smith K, Warren S, Heger A, Hoffman R D, Rauscher T, Sakharuk A, Schatz H, Thielemann F K, Wiescher M https://groups.nscl.msu.edu/jina/reaclib/db/[2012.3.30]
[25]	Xu H S, Tu X L, Yuan Y J, Xia J W, Zang Y D, Wang M, Mao R S, Hu Z G, Mei B, Shuai P, Zhu Z C, Tang S W, Geng P, Liu Yong, Zhao T C, Zhang HANG X Y, Yang J C, Mao L J, Zhang Y H, Zhou X H, Huang W X, Xiao G Q, Zhao H W, Zhan W L 2009 Chin. Sci. Bull. 54 4749
[26]	Tu X L, Xu H S, Wang M, Zhang Y H, Litvinov Yu A, Sun Y, Schatz H, Zhou X H, Yuan Y J, Xia J W, Audi G, Blaum K, Du C M, Geng P, Hu Z G, Huang W X, Jin S L, Liu L X, Liu Y, Ma X, Mao R S, Mei B, Shuai P, Sun Z Y, Suzuki H,Tang J S, Xiao G Q, Xu X, Yamaguchi T, Yamaguchi Y, Yan X L, Yang J C, Ye R P, Zang Y D, Zhao H W, Zhao T C, Zhang X Y, Zhan W L 2011 Phys. Rev. Lett. 106 112501
[27]	Tu X L, Wang M, Litvinov Yu A, Zhang Y H, Xua H S, Sun Z Y, Audi G, Blaum K, Du C M, Huang W X, Hu Z G, Geng P, Jin S L, Liu L X, Liu Y, Mei B, Mao R S, Ma X W, Suzuki H, Shuai P, Sun Y, Tang S W, Wang J S, Wang S T, Xiao G Q, Xu X, Xia J W, Yang J C, Ye R P, Yamaguchi T, Yan X L, Yuan Y J, Yamaguchi Y, Zang Y D, Zhao H W, Zhao T C, Zhang X Y, Zhou X H, Zhan W L 2011 Nucl. Instrum. Methods Phys. Res. Sect. A 654 213
[28]	Zhang Y H, Xu H S, Litvinov Yu A, Tu X L, Yan X L, Typel S, Blaum K, Wang M, Zhou X H, Sun Y, Brown B A, Yuan Y J, Xia J W, Yang J C, Audi G, Chen X C, Jia G B, Hu Z G, Ma X W, Mao R S, Mei B, Shuai P, Sun Z Y, Wang S T, Xiao G Q, Xu X, Yamaguchi T, Yamaguchi Y, Zhang Y D, Zhao H W, Zhao T C, Zhang W, Zhan W L 2012 Phys. Rev. Lett. 109 102501
[29]	Yan X L, Xu H S, Litvinov Yu A, Zhang Y H, Schatz H, Tu X L, Blaum K, Zhou X H, Sun B H, He J J, Sun Y, Wang M, Yuan Y J, Xia J W, Yang J C, Audi G, Jia G B, Hu Z G, Ma X W, Mao R S, Mei B, Shuai P, Sun Z Y, Wang S T, Xiao G Q, Xu X, Yamaguchi T, Yamaguchi Y, Zang Y D, Zhao H W, Zhao T C, Zhang W, Zhan W L 2013 APJ 766 L8
[30]	Zhou Xiao-Hong, Yan Xin-Liang, Tu Xiao-Lin, Wang Meng 2010 Precise mass measurement of nuclides. Physics 39 659 (in Chinese) [周小红, 颜鑫亮, 涂小林, 王猛 2010 物理 39 659]
[31]	Sun Bao-Hua, Meng Jie 2010 Progress in precision mass measurements of atomic nuclei. Physics 39 666 (in Chinese) [孙保华, 孟杰 2010 物理 39 666]

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