Study of Multiple Election Capture and Electron Emission Processes in slow Collisions of slow Multiply Charged Ions with Atomic and Molecular Targets

多电荷离子与原子和分子靶标慢速碰撞中的多次电子捕获和电子发射过程研究

• 批准号: 04452059
• 负责人: OKUNO Kazuhiko
• 金额: $ 0.51万
• 依托单位: Tokyo Metoropolitan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04452059/
• 关键词: Multiply charged ion; Orbiting effect; Multiple electron capture; Coulomb explosion; Franck-Condon principle; Electron capture cross section; 同時計測; オービティング効果; クーロン解離; 電子捕獲反応; クーロン爆発; フランクコンドン原理

In this study, single- and multiple-election capture cross sections in collisions of multiply charged ions of He^2 ・ C^4 ・ Ar^3 (q=6, 7, 8, 9 and 11) with various targets of He, Ne, Ar, Kr, H_2, N_2, O_2, CH_4, C_2, H_3, C_3, H_3, and n-C_4 H_<10> have been measured at low energies, and also coulomb explosion of (H_2)^3 and (N_2)^2 produced in collisions of He^2 with H _2 and N_2 has been investigated by means of the coincidence experiments detecting pair fragment ions.Low energy collisions of He^2 with H_2 have been first revieled to be dominated by the double election capture reactions. The orbiting effect due to the polarization of targets clearly has been found in single- and double-electron capture cross sections measured for Ar^2 (q=6, 7, 8, 9 and 11) in collision with H_2 and He at lower energies. The measurements of the hinetic energy distribution of pair fragment ions produced in He^2 -H_2 collisions has first demonstrated the validity of the Franck-Condon principle in transitions from H_2 to (H _2)^2 state and from N_2 to (N_2)^2 state even at low energies.

本文测量了多电荷离子He^2 · C^4 · Ar^3（q=6，7，8，9和11）与He，Ne，Ar，Kr，H_2，N_2，O_2，CH_4，C_2，H_3，C_3，H_3和n-C_4 H_的低能碰撞中的单电子和多电子俘获截面<10>。利用对碎片离子的符合实验研究了He^2与H_2和N_2碰撞产生的（H_2）^3和（N_2）^2的库仑爆炸，首次提出He^2与H_2的低能碰撞是由双电子俘获反应控制的。在Ar ^2（q=6，7，8，9和11）与H_2和He碰撞的单电子和双电子俘获截面中，在较低能量下，我们清楚地发现了由于靶的极化而产生的轨道效应。对He^2 -H_2碰撞中产生的成对碎片离子的动能分布的测量，首次证明了在低能下H_2到（H_2）^2态和N_2到（N_2）^2态跃迁的Franck-Condon原理的正确性。

项目成果

奥野和彦: "小型多価イオン源(Mini-EBIS)の開発" 日本物理学会会誌. 47. 285-292 (1992)

Kazuhiko Okuno：“紧凑型多价离子源 (Mini-EBIS) 的开发” 日本物理学会杂志 47. 285-292 (1992)。

Koichi Soejima: "Multi-electron-capture processes by C^4 from CH_2, C_2H_2 and n-C_4H_<10> in the energy range 0.7-400 ev u^<-1>" I.Phys., B : At. Mol. Opt. Phys.28. 344-348 (1993)

Koichi Soejima：“C^4 在 0.7-400 ev u^<-1> 能量范围内从 CH_2、C_2H_2 和 n-C_4H_<10> 进行多电子捕获过程”I.Phys.，B ：At。

Kazuhiko Okuno: "Coulomb explosion of(H_2)^<2+> produced in electron capture collisions of multiply charged ions with H_2 at low energies" Proc.of the Joint International Seminar on Atomic and Molecular Physics.151-155 (1992)

Kazuhiko Okuno：“低能量下多电荷离子与 H_2 的电子捕获碰撞中产生的 (H_2)^<2 > 库仑爆炸”Proc.of the Joint International Seminar on Atomic and MolecularPhys.151-155 (1992)

Hiroki Saitoh: "Measurements of charge transfer cross sections of Ar^3(q6,7, 8, 9 and 11) collision with H_2 and He targets at low energies" At. Coll. Res. in Jpn.19. p19 (1993)

Hiroki Saitoh：“Ar^3(q6,7,8,9 和 11) 与 H_2 和 He 目标在低能量下碰撞的电荷转移截面的测量”。

Kazuhiko Okuno: "Single- and double-electron capture in ^3He^<2+>-H_2 collisions at low energies from 1 to 2000 eV" J.Phys.B:At.Mol.Opt.Phys.25. L105-L108 (1992)

Kazuhiko Okuno：“1 至 2000 eV 低能量下 ^3He^<2 >-H_2 碰撞中的单电子和双电子捕获”J.Phys.B:At.Mol.Opt.Phys.25。