A Precision Measurement of the Dynamics Involved in the Decaying of Molecular Shape Resonance States
分子形状共振态衰变动力学的精确测量
基本信息
- 批准号:16340119
- 负责人:
- 金额:$ 9.73万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2004
- 资助国家:日本
- 起止时间:2004 至 2006
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The resonance condition observed in the collision between a low-energy electron with a molecule can be broadly classified into two forms; shape resonance-whereby the electron is temporarily trapped by the molecular potential, and the Feshback resonance-which proceeds via electronic excitation. Both the core-level absorption spectrum observed in molecular collisions with soft X-ray photons and that observed in the region above the ionization threshold are dominated by shape resonances. This shape resonance observed in the photon-molecule collision is due to a process whereby the photoelectron is temporarily trapped by the molecular potential and later released, that is, ideally the same as the shape resonance phenomenon in low-energy molecular collisions. With the aim of investigating the dynamics involved in shape resonance phenomena, our group has embarked on a research involving systematic studies of shape resonances in low-energy electron collisions and those observed in high resolution core-level photoionization. In comparing the core-level ionization state with the ground state though the Coulomb potentials differ, the valence electronic configurations are identical. While focusing on this point, we studied the shape resonance phenomena for molecules with similar symmetry, energy, vibrational and electronic excitation for both electron collision and core-level photoionization. This not only managed to elucidate on the shape resonance phenomena in a many-body system, but also showed the failure of the adiabatic potential approximation in describing the motion of the electron and nucleus. In order to achieve this goal, some basic molecules were studied; using the low-energy electron collision apparatus at Sophia University, while experiments were carried out at the Spring-8 using the coincidence technique between the core-level photoelectron and the photoelectron-ion. We understood the dynamics involved in the decaying of the molecular shape resonance states.
在低能电子与分子碰撞中观察到的共振条件大致可分为两种形式;形状共振(电子被分子势暂时捕获)和反射共振(通过电子激发进行)。在软x射线光子分子碰撞中观察到的核能级吸收光谱和在电离阈值以上区域观察到的核能级吸收光谱都以形状共振为主。在光子-分子碰撞中观察到的这种形状共振是由于光电子暂时被分子势捕获并随后释放的过程,即理想情况下与低能分子碰撞中的形状共振现象相同。为了研究形状共振现象的动力学,本课题组开展了低能电子碰撞和高分辨率核能级光电离中形状共振的系统研究。在比较核能级电离态和基态时,虽然库仑势不同,但价电子构型是相同的。针对这一点,我们研究了具有相似对称性、能量、振动和电子激发的电子碰撞和核能级光离分子的形状共振现象。这不仅解释了多体系统中的形状共振现象,而且表明了描述电子和原子核运动的绝热势近似的失败。为了实现这一目标,对一些基本分子进行了研究;利用索菲亚大学的低能电子碰撞装置,在Spring-8上利用核能级光电子与光电子-离子之间的重合技术进行了实验。我们了解了分子形状共振态衰减的动力学过程。
项目成果
期刊论文数量(88)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Nuclear dynamics of core-excited and ionized small polyatomic molecules probed by multiple coincidence momentum imaging technique
通过多重符合动量成像技术探测核心激发和电离小多原子分子的核动力学
- 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;Norio Saito;Norio Saito;Norio Saito
- 通讯作者:Norio Saito
Experimental and theoretical elastic cross sections for electron collisions with the C_3 H_6 isomer
电子与C_3 H_6异构体碰撞的实验和理论弹性截面
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:A.Yamane;F.Shimojo;K.Hoshino;C.Makochekanwa他;乾 雅祝;C.Makochekanwa他
- 通讯作者:C.Makochekanwa他
Experimental study of C_3 F_6 electron impact spectroscopy
C_3 F_6电子轰击谱实验研究
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:A.Yamane;F.Shimojo;K.Hoshino;C.Makochekanwa他;乾 雅祝;C.Makochekanwa他;M.Inui;H.Kato他
- 通讯作者:H.Kato他
Experimental and theoretical elastic cross sections for electron collisions with the C3 H6 isomer
电子与 C3 H6 异构体碰撞的实验和理论弹性截面
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:K.Fukao;H.Koizumi;D.Ishikawa;C.Makochekanwa
- 通讯作者:C.Makochekanwa
Interference effects in Auger resonant Raman spectra of CO via selective vibrational excitations across the O 1s→ 2π resonance
通过 O 1s→ 2π 共振选择性振动激发对 CO 俄歇共振拉曼光谱的干扰效应
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:K.Fukao;A.Sakamoto;K.Kubota;Y.Saruyama;A.De Fanis他;T.Tanaka他
- 通讯作者:T.Tanaka他
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10.2220/biomedres.39.105 - 发表时间:
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EU Enlargement and the economics of Transition (in Japanese)
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2005 - 期刊:
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松本 朗;INABA Kazuo;角田 修一;西口 清勝;稲葉 和夫;藤岡 惇;角田 修一;田中 宏;角田 修一;MATSUMOTO Akira;佐藤 卓利;田中 宏;田中 祐二;藤岡 惇;角田 修一;田中 宏;KAKUTA Shuichi;TANAKA Hiroshi - 通讯作者:
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大阪大学における植込み型LVAD装着手術と管理の実際
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2017 - 期刊:
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SEINO Syota;KIMOTO Takeru;YOSHIDA Hidemi;TANJI Kunikazu;MATSUMIYA Tomoh;HAYAKARI Ryo;SEYA Kazuhiko;KAWAGUCHI Shogo;TSURUGA Kazushi;TANAKA Hiroshi;IMAIZUMI Tadaatsu;秦 広樹 - 通讯作者:
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2004 - 期刊:
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松本 朗;INABA Kazuo;角田 修一;西口 清勝;稲葉 和夫;藤岡 惇;角田 修一;田中 宏;角田 修一;MATSUMOTO Akira;佐藤 卓利;田中 宏;田中 祐二;藤岡 惇;角田 修一;田中 宏;KAKUTA Shuichi;TANAKA Hiroshi;NISHIGUCHI Kiyokatsu;FUJIOKA Atsushi;西口 清勝 - 通讯作者:
西口 清勝
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{{ truncateString('TANAKA Hiroshi', 18)}}的其他基金
An Assessment of International Science Education in Japanese Secondary Education and a Consideration of its Direction in the Future
日本中等教育中国际科学教育的评价及其未来发展方向的思考
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19K03180 - 财政年份:2019
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Reconstruction of the Historical Image of Rural Society in Northern China in Modern and Contemporary China Using Village Records
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Comprehensive Study of the Sengaku collated edition of the Manyoshu
万叶集泉乐校勘本综合研究
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25590228 - 财政年份:2013
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25420015 - 财政年份:2013
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24650154 - 财政年份:2012
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