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  • 09월 04일 13시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Dissociative Double Ionization Following Inner Shell Photoexcitation of Br2 and I2 by Electron-Ion and Ion-Ion Coincidence Methods in the Range 88 –1000 eV

등록일
2009년 8월 14일 14시 27분 30초
접수번호
1054
발표코드
34P83포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 <발표Ⅰ>
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
부봉현, 이재광1
충남대학교 화학과, Korea
1Department of Chemistry, University of Akron, United States
Dissociative multiple photoionization processes of Br2 and I2 have been investigated in the valence and inner shell photoexcitation/ photoionization regions by time-of-flight (TOF) mass spectrometry coupled to synchrotron radiation. Several discrete resonances are observed below thresholds of some specific core levels. Also slow rises in the total yield curve are observed beyond the threshold regions. This is caused by centrifugal barrier effects which are increasingly important with increasing angular momentum quantum number l involved. In the whole molecules, various multiply charged ions are detected along with monocations in the whole energy range. For I2 molecule, multiply charged ions of In+ (n=1-3) are observed in the range above 150 eV (above the 4p threshold). Above 650 eV (above the 3d threshold), In+ (n = 4-5) ions begin to play an important role in the total ion yield. Various ion pairs I+-I+, I2+-I2+, I2+-I+, I3+-I2+, I3+-I+, and I4+-I2+ are observed, showing that the PIPICO ratios depend significantly on the core excitation energy involved.

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