Dissociation of Molecules in Slow Collisions of Highly Charged Ions with Molecules

高电荷离子与分子缓慢碰撞时分子的解离

• 批准号: 11640389
• 负责人: DANJO Atsunori
• 金额: $ 2.18万
• 依托单位: NIIGATA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11640389/
• 关键词: Charge Transfer; Dissociation; Coulomb Explosion; 多価イオン; 電荷移行; 多電子励起; 同時計測

Single and multiple electron capture processes are studied in slow collisions between Ar^<q+> (q=6-9) ions and N_2 and CO molecules. The contribution of dissociative and non-dissociative channels are determined as well as the kinetic energies of the fragments of the molecular ions.We present experimental results of multiple electron capture processes in 1.75q keV Ar^<q+> (q=6-9) collisions with N_2 and CO molecules. The charge state of the scattered ions Ar^<(q-1)+> (j=1,2,3) are analyzed in coincidence with the recoil molecular ions extracted from the collision region by an electric field (10V/cn - 50V/cm) and analyzed by a time-of-flight method (TOF).In the present TOF spectrometer, the ions with kinetic energies greater than a certain value, which depends on the extraction field, can not reach the detector. This causes a splitting of the TOF spectrum into one 'forward' and the other 'backward' peak.

本文研究了Ar^<q+>（q=6-9）离子与N_2和CO分子慢碰撞中的单电子和多电子俘获过程。给出了1.75qkeV Ar^<q+>（q=6-9）与N_2和CO分子碰撞中多电子俘获过程的实验结果。分析了散射离子Ar^<（q-1）+>（j= 1，2，3）的电荷态，与电场从碰撞区引出的反冲分子离子的电荷态一致（10 V/cm-50 V/cm），并通过飞行时间法（TOF）进行分析。在目前的TOF谱仪中，动能大于一定值的离子，这取决于提取场，无法到达探测器。这导致TOF谱分裂成一个“前向”峰和另一个“后向”峰。

项目成果

小熊好弘 他: "Dissociation of N_2 and CO Molecules in Slow Collisions of Ar^<q+>(q=6,7,8,9)"Abstracts of Papers XXIICPEAC, Sendai. Vol.2. 634 (1999)

Yoshihiro Oguma 等人：“Ar^<q+>(q=6,7,8,9) 缓慢碰撞中 N_2 和 CO 分子的解离”，论文摘要 XXIICPEAC，第 634 卷（1999 年）。