振动冷 HD+ 和
IF 2.6 2区 物理与天体物理 Q2 OPTICS
F. Grussie, Lukas Berger, Manfred Grieser, Á. Kálosi, D. Müll, Oldřich Novotný, Aigars Znotins, Fabrice Dayou, Xavier Urbain, Holger Kreckel
{"title":"振动冷 HD+ 和 <mml:msubs 反应的绝对速率系数测量值","authors":"F. Grussie, Lukas Berger, Manfred Grieser, Á. Kálosi, D. Müll, Oldřich Novotný, Aigars Znotins, Fabrice Dayou, Xavier Urbain, Holger Kreckel","doi":"10.1103/physreva.109.062804","DOIUrl":null,"url":null,"abstract":"Ion-neutral reactions are driving the formation of small molecules in the gas phase of interstellar clouds, where hydrogen molecules and their ions are by far the most important collision partners for any species in the astrochemical network. Here we present absolute rate coefficient measurements for the reactions HD++C→CH+/CD++D/H and H3++C→CH+/CH2++H2/H obtained using a recently commissioned ion-neutral collision setup at the Cryogenic Storage Ring. Our measurements with vibrationally cold ions result in significantly higher rate coefficients when compared with previous studies using internally excited ions, bringing them in better agreement with classical capture theories. Moreover, we have performed detailed quasiclassical trajectory (QCT) calculations for the HD++C reaction, using new potential energy surfaces. Our experimental results and the QCT calculations show very good agreement for the absolute cross section of the reactions, as well as for the isotope effect. These results have great potential relevance for the chemistry of the interstellar medium and the onset of organic chemistry in space.\n \n \n \n \n Published by the American Physical Society\n 2024\n \n \n","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Absolute rate coefficient measurements of the reactions of vibrationally cold \\n<mml:math xmlns:mml=\\\"http://www.w3.org/1998/Math/MathML\\\"><mml:msup><mml:mrow><mml:mi>HD</mml:mi></mml:mrow><mml:mo>+</mml:mo></mml:msup></mml:math>\\n and \\n<mml:math xmlns:mml=\\\"http://www.w3.org/1998/Math/MathML\\\"><mml:msubs\",\"authors\":\"F. Grussie, Lukas Berger, Manfred Grieser, Á. Kálosi, D. Müll, Oldřich Novotný, Aigars Znotins, Fabrice Dayou, Xavier Urbain, Holger Kreckel\",\"doi\":\"10.1103/physreva.109.062804\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Ion-neutral reactions are driving the formation of small molecules in the gas phase of interstellar clouds, where hydrogen molecules and their ions are by far the most important collision partners for any species in the astrochemical network. Here we present absolute rate coefficient measurements for the reactions HD++C→CH+/CD++D/H and H3++C→CH+/CH2++H2/H obtained using a recently commissioned ion-neutral collision setup at the Cryogenic Storage Ring. Our measurements with vibrationally cold ions result in significantly higher rate coefficients when compared with previous studies using internally excited ions, bringing them in better agreement with classical capture theories. Moreover, we have performed detailed quasiclassical trajectory (QCT) calculations for the HD++C reaction, using new potential energy surfaces. Our experimental results and the QCT calculations show very good agreement for the absolute cross section of the reactions, as well as for the isotope effect. These results have great potential relevance for the chemistry of the interstellar medium and the onset of organic chemistry in space.\\n \\n \\n \\n \\n Published by the American Physical Society\\n 2024\\n \\n \\n\",\"PeriodicalId\":48702,\"journal\":{\"name\":\"Physical Review a\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2024-06-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physical Review a\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1103/physreva.109.062804\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review a","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physreva.109.062804","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 1

摘要

离子中性反应正在星际云气相中推动小分子的形成,其中氢分子及其离子是迄今为止天体化学网络中任何物种最重要的碰撞伙伴。在这里,我们展示了利用最近在低温储存环启用的离子中性碰撞装置测量到的 HD++C→CH+/CD++D/H 和 H3++C→CH+/CH2++H2/H 反应的绝对速率系数。与之前使用内部激发离子进行的研究相比,我们使用振动冷离子进行的测量得出了更高的速率系数,使其与经典俘获理论更加一致。此外,我们还利用新的势能面对 HD++C 反应进行了详细的准经典轨迹(QCT)计算。我们的实验结果和 QCT 计算结果在反应的绝对截面以及同位素效应方面显示出非常好的一致性。这些结果对于星际介质化学和空间有机化学的发生具有巨大的潜在意义。 美国物理学会出版 2024
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Absolute rate coefficient measurements of the reactions of vibrationally cold HD+ and
Ion-neutral reactions are driving the formation of small molecules in the gas phase of interstellar clouds, where hydrogen molecules and their ions are by far the most important collision partners for any species in the astrochemical network. Here we present absolute rate coefficient measurements for the reactions HD++C→CH+/CD++D/H and H3++C→CH+/CH2++H2/H obtained using a recently commissioned ion-neutral collision setup at the Cryogenic Storage Ring. Our measurements with vibrationally cold ions result in significantly higher rate coefficients when compared with previous studies using internally excited ions, bringing them in better agreement with classical capture theories. Moreover, we have performed detailed quasiclassical trajectory (QCT) calculations for the HD++C reaction, using new potential energy surfaces. Our experimental results and the QCT calculations show very good agreement for the absolute cross section of the reactions, as well as for the isotope effect. These results have great potential relevance for the chemistry of the interstellar medium and the onset of organic chemistry in space. Published by the American Physical Society 2024
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Physical Review a
Physical Review a OPTICSPHYSICS, ATOMIC, MOLECULAR & CHEMICA-PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
CiteScore
5.30
自引率
24.10%
发文量
2086
期刊介绍: Physical Review A (PRA) publishes important developments in the rapidly evolving areas of atomic, molecular, and optical (AMO) physics, quantum information, and related fundamental concepts. PRA covers atomic, molecular, and optical physics, foundations of quantum mechanics, and quantum information, including: -Fundamental concepts -Quantum information -Atomic and molecular structure and dynamics; high-precision measurement -Atomic and molecular collisions and interactions -Atomic and molecular processes in external fields, including interactions with strong fields and short pulses -Matter waves and collective properties of cold atoms and molecules -Quantum optics, physics of lasers, nonlinear optics, and classical optics
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享

联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信