2004 Fiscal Year Final Research Report Summary
Studies on shape resonance dynamics by photoelectron angular distribution measurements from oriented molecules
| Project/Area Number |
14340126
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
物理学一般
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| Research Institution | High Energy Accelerator Research Organization (2004)
The High Energy Accelerator Research Organization (2002-2003) |
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Principal Investigator |
YAGISHITA Akira High energy accelerator research organization, Institute of materials structure science, Prof., 物質構造科学研究所, 教授 (80157966)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Masahiko Tohoku Univ, Institute of Multidisciplinary Research for Advanced Materials, Associate Prof., 多元物質科学研究所, 助教授 (80241579)
ADACHI Jun-ichi High energy accelerator research organization, Institute of materials structure science, Res. Associate, 物質構造科学研究所, 助手 (10322629)
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| Project Period (FY) |
2002 – 2004
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| Keywords | velocity imaging / angular correlation / inversion symmetry / dissociation channel / triple coincidence / core-hole / 反転対称性 / 分子の構造変形 |
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| Research Abstract |
We have successfully designed and constructed a new apparatus of coincidence velocity imaging spectrometer for the study of angular correlations between photoelectrons and photofragments.
Using this apparatus, we have measured momentum correlation patterns between O1s photoelectrons and photofragments of CO^+ and O^+ at the photon energy above the ionization threshold of O1s of CO_2 molecules. And we have found that the O1s photoelectron angular distribution pattern violate the inversion symmetry.
We have also succeeded in measuring the C1s photoelectron angular distribution patterns of C_2H_2 molecules for each dissociation channel by the triple coincidence. For asymmetric dissociation channels, the C 1s photoelectron angular distribution patterns violate the inversion symmetry. This implies that the core-hole memory is preserved in the photofragments.
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[Journal Article] Double photoionization of helium at an excess energy of 60 eV using left-and right-elliptically-polarized light2002
Author(s)
S.A.Collins, S.Cvejanovic, C.Dawson, T.J.Reddish, D.P.Seccombe, A.Huetz, L.Malegat, P.Selles, A.K.Kazansky, A.Danjo, K.Soejima, K.Okuno, A.Yagishita
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Journal Title
Phys. Rev. A 65
Pages: 052717-1-8
Description
「研究成果報告書概要(欧文)」より
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