H2D+与固体的相互作用及H2D+的结构测量

朱洲森; 袁学东; 缪竞威; 师免恭; 廖雪花; 方才进

doi:10.7498/aps.61.209203

摘要

报道了分子离子H2D+与超薄固体膜相互作用的实验研究. 阐述了H2D+对天体物理等领域的重要性,简述了近几年针对H2D+的研究, 分析了在实验室条件下H2D+的形成机理,给出了其与固体膜相互作用产生库仑爆炸的能谱. 进行了辅助实验,使D2+与相同固体膜发生作用,并利用这个结果和其他分析与处理方法, 将H2D+的D+能谱中D2+计数部分做了去除. 实验再次证实了分子离子与固体相互作用时尾流效应的存在, 采用三体尾流效应对比的方法最终确定了H2D+结构形状和键长. 对H2D+库仑爆炸后的较重离子尾流谱形状的反常现象做了讨论和分析.

关键词:

Abstract

The Interaction between molecular ion H2D+ and ultra-thin solid film is reported for the first time. The importance of H2D+ in the areas such as astrophysics is stated and the study on H2D+ of recent years is outlined. The formation mechanism for the H2D+ under laboratory conditions is also analysed. The structural pattern of H2D+ and the mean internuclear separation are determined using Coulomb explosion technique. Once again, the existence of wake effects in the interaction of molecular ions with solid is confirmed and three-body wake effect module is used to determine the geometric structure of H2D+. Finally, the unusual structure of the wake of energy spectrum for the heavier ions in the H2D+ Coulomb explosion is discussed.

Keywords:

作者及机构信息

1.
四川师范大学物理与电子工程学院, 成都 610066;

2.
四川大学原子核科学技术研究所, 辐射物理与技术重点实验室, 成都 610064

基金项目: 国家自然科学基金(批准号: 11125175, 10574095)和四川高校科研创新团队建设计划(批准号: 12TD008)资助的课题.

Authors and contacts

1.
Institute of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610066, China;

2.
Institute of Nuclear and Technology, Sichuan University, Chengdu 610064, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 11125175, 10675087) and the Construction Plan for Scien- tific Research Innovation Teams of Universities in Sichuan Province, China (Grant No. 12TD008).

参考文献

[1]	Mitchell J B, Forand L, Janssen R, McGowan J 1984 J. Phys. B17 909
[2]	Astner G, Mannervik S, Veje E 1982 Phys. Rev. A25 828
[3]	Zhu Z S, Miao J W, Shi M G 2008 Acta Phys. Sin. 57 6240 (in Chinese) [朱洲森, 缪竞威, 师免恭 2008 物理学报 57 6240]
[4]	Miao J W, Yang B F, Shi M G 1986 Nucl. Inst. Meth. B13 181
[5]	Zhu Z S, Miao J W, Shi M G, Yuan X D 2009 Chin. Phys. B 18 4840
[6]	Adams N G, Smith D 1988 Chem. Phys. Lett. 144 11
[7]	Chapillon E, Parise B, Guilloteau S, Du F 2011 Astron. Astrophys. A143 533
[8]	Vastel C 2006 Astrophys. J. 645 1198
[9]	Sochi T, Tennyson J 2010 Astron. Astrophys. 405 2345
[10]	Kokoouline V, Greene C H 2005 Phys. Rev. A72 188
[11]	Strasser D, Lammich L, Kreckel H, Lange M 2004 Phys. Rev. A69 702
[12]	Watson W D 1976 Rev. Mordern Phys. 48 513
[13]	Bordsley J N, Biondi M A 1970 Adv. At. Mol. Phys. 6 1
[14]	Adams N G, Smith D 1987 Astrophys. J. 317 171
[15]	Kevin G, Nigel G A, David S 1992 J. Phys. Chem. 96 7645
[16]	Gaillard M J, Poizat J C, Ratkowski A, Remillieux J 1977 Phys. Rev. A16 2323
[17]	Gemmell D A, Vager Z 1975 Phys. Rev. Lett. 34 1420
[18]	Alvarey I 1992 Phys. Rev. A 45 285

施引文献

[1]	Mitchell J B, Forand L, Janssen R, McGowan J 1984 J. Phys. B17 909
[2]	Astner G, Mannervik S, Veje E 1982 Phys. Rev. A25 828
[3]	Zhu Z S, Miao J W, Shi M G 2008 Acta Phys. Sin. 57 6240 (in Chinese) [朱洲森, 缪竞威, 师免恭 2008 物理学报 57 6240]
[4]	Miao J W, Yang B F, Shi M G 1986 Nucl. Inst. Meth. B13 181
[5]	Zhu Z S, Miao J W, Shi M G, Yuan X D 2009 Chin. Phys. B 18 4840
[6]	Adams N G, Smith D 1988 Chem. Phys. Lett. 144 11
[7]	Chapillon E, Parise B, Guilloteau S, Du F 2011 Astron. Astrophys. A143 533
[8]	Vastel C 2006 Astrophys. J. 645 1198
[9]	Sochi T, Tennyson J 2010 Astron. Astrophys. 405 2345
[10]	Kokoouline V, Greene C H 2005 Phys. Rev. A72 188
[11]	Strasser D, Lammich L, Kreckel H, Lange M 2004 Phys. Rev. A69 702
[12]	Watson W D 1976 Rev. Mordern Phys. 48 513
[13]	Bordsley J N, Biondi M A 1970 Adv. At. Mol. Phys. 6 1
[14]	Adams N G, Smith D 1987 Astrophys. J. 317 171
[15]	Kevin G, Nigel G A, David S 1992 J. Phys. Chem. 96 7645
[16]	Gaillard M J, Poizat J C, Ratkowski A, Remillieux J 1977 Phys. Rev. A16 2323
[17]	Gemmell D A, Vager Z 1975 Phys. Rev. Lett. 34 1420
[18]	Alvarey I 1992 Phys. Rev. A 45 285

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