Study on molecular dissociation governed by femtoseconds dynamics of core-excited molecules

核激发分子飞秒动力学控制的分子解离研究

基本信息

  • 批准号:
    15540379
  • 负责人:
  • 金额:
    $ 2.3万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2003
  • 资助国家:
    日本
  • 起止时间:
    2003 至 2004
  • 项目状态:
    已结题

项目摘要

1.We have measured resonant photoemission spectra of the CF_4, CH_3F, and SF_6 molecules after photoexcitation of the F 1s core electron to the lowest unoccupied molecular orbital and found the Auger electron emission from the F atomic fragment. The Doppler energy shifts of the F atomic Auger lines provide experimental evidence that the ultrafast dissociation takes place, where one C-F or S-F bond is elongated along the electric vector of the light and ruptured.2.Replacing the CCD camera of the electron detector in the electron energy analyser (Gammadata-Scienta SES2002) to the delay-line detector and combining it with the ion momentum spectrometer, we have constructed the Auger electron -ion momentum coincidence spectrometer.3.Using the Auger electron -ion momentum coincidence spectrometer, we have investigated ultrafast dissociation after the core excitation of CF_4, CH_3F, and SF_6 molecules and found the following.(1)Kinetic energy of the F ion is less than the half of the available excess energy and the rest goes to the vibrational excitation and further fragmentation of the molecular fragment.(2)Ultrafast dissociation also takes place after C 1s excitation of CH_3F and produces the CH^+ ion.(3)The F 1s atomic Auger electron is scattered by the CF_3 fragment.(4)Before the dissociation is complete, electron migration takes place from the CH_3 fragment to the F atomic fragment in which the Atomic-like Auger decay takes place.
1.测量了CF_4、CH_3F和SF_6分子的共振光电子能谱,发现F原子碎片的俄歇电子发射。F原子俄歇谱线的多普勒能移提供了实验证据,说明发生了超快离解,其中一个C-F或S-F键沿光的电矢量沿着伸长并断裂(Gammadata-Scienta SES 2002)到延迟线检测器并将其与离子动量谱仪组合,3.利用俄歇电子-离子动量符合谱仪研究了CF_4,CH_3F,和SF_6分子,并发现了以下结果。(1)F离子的动能小于可用过剩能量的一半,其余的用于振动激发和分子碎片的进一步碎裂。(2)CH_3F在C1 s激发后也发生超快解离,产生CH^+离子。(3)F_1s原子俄歇电子被CF_3碎片散射。(4)在解离完成之前,电子从CH_3碎片向F原子碎片迁移,在F原子碎片中发生类原子俄歇衰变。

项目成果

期刊论文数量(60)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
High-resolution inner-shell spectroscopies of free atoms and molecules using soft-x-ray beamlines at the third-generation synchrotron radiation sources
  • DOI:
    10.1088/0953-4075/36/4/201
  • 发表时间:
    2003-02
  • 期刊:
  • 影响因子:
    0
  • 作者:
    K. Ueda
  • 通讯作者:
    K. Ueda
Doppler effect in resonant photoemission from SF_6: correlation between Doppler profile and Auger emission anisotropy
SF_6 谐振光发射中的多普勒效应:多普勒轮廓与俄歇发射各向异性之间的相关性
  • DOI:
  • 发表时间:
    2003
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Georg Pruemper;Norio Saito;Georg Pruemper;Georg Pruemper;Kiyoshi Ueda;Georg Pruemper;Georg Pruemper;Kiyoshi Ueda;Kiyoshi Ueda;G.Prumper;G.Prumper;G.Prumper;Alberto De Fanis;Norio Saito;Norio Saito;Norio Saito;N.Saito;N.Saito;Kiyoshi Ueda;上田 潔;Kiyoshi Ueda;Masashi Kitajima
  • 通讯作者:
    Masashi Kitajima
Molecular photodissociation studied by VUV and soft x-ray radiation
Anisotropic ultrafast dissociation probed by the Doppler effect in resonant photoemission from CF4.
  • DOI:
    10.1103/physrevlett.90.233006
  • 发表时间:
    2003-06
  • 期刊:
  • 影响因子:
    8.6
  • 作者:
    K. Ueda;M. Kitajima;A. De Fanis;T. Furuta;H. Shindo;H. Tanaka;K. Okada;R. Feifel;S. Sorensen-S.-Sore
  • 通讯作者:
    K. Ueda;M. Kitajima;A. De Fanis;T. Furuta;H. Shindo;H. Tanaka;K. Okada;R. Feifel;S. Sorensen-S.-Sore
Asymmetric nuclear motion of the F 1s-ionized state in BF_3 probed by quadruple-ion-coincidence momentum imaging
四离子符合动量成像探测BF_3中F 1s电离态的不对称核运动
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Georg Pruemper;Norio Saito;Georg Pruemper;Georg Pruemper;Kiyoshi Ueda;Georg Pruemper;Georg Pruemper;Kiyoshi Ueda;Kiyoshi Ueda;G.Prumper;G.Prumper;G.Prumper;Alberto De Fanis
  • 通讯作者:
    Alberto De Fanis
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

UEDA Kiyoshi其他文献

UEDA Kiyoshi的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('UEDA Kiyoshi', 18)}}的其他基金

Data management method of a session control server continuing communication even at the time of disaster
灾害发生时也能继续通信的会话控制服务器的数据管理方法
  • 批准号:
    26880021
  • 财政年份:
    2014
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Research Activity Start-up
Charge and energy transfer in two-composite clusters following multiple ionization
多次电离后两种复合团簇中的电荷和能量转移
  • 批准号:
    21244062
  • 财政年份:
    2009
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Core level photoelectron spectroscopy of molecules: resonance, quantum interference, nonadiabatic effect and determination of the geometry of core ionized state
分子核心级光电子能谱:共振、量子干涉、非绝热效应和核心电离态几何形状的确定
  • 批准号:
    18340116
  • 财政年份:
    2006
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Nuclear motion and dissociation dynamics of core-excited molecules
核心激发分子的核运动和解离动力学
  • 批准号:
    11440120
  • 财政年份:
    1999
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Anisotropy and relaxation dynamics in core-excited small molecules
核心激发小分子的各向异性和弛豫动力学
  • 批准号:
    08454108
  • 财政年份:
    1996
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study of Acidic Actin of Nuclear Skeleton
核骨架酸性肌动蛋白的研究
  • 批准号:
    61570122
  • 财政年份:
    1986
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了