100% site-selective fragmentation in core-hole-photoexcited methanol by anion-yield spectroscopy

被引：31
作者：
Stolte, WC [1 ]
Öhrwall, G
Sant'Anna, MM
Lopez, ID
Dang, LTN
Piancastelli, MN
Lindle, DW
机构：
[1] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA
[2] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA
[3] Ctr Natl Metrol, Qreretaro 76900, Mexico
[4] Univ Roma Tor Vergata, Dept Chem Sci & Technol, I-00133 Rome, Italy
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2002年 / 35卷 / 12期
关键词：
D O I：
10.1088/0953-4075/35/12/102
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Anion-yield spectroscopy is shown to provide the first experimental demonstration of 100% site selectivity in small-molecule photofragmentation processes. In methanol, CH3OH, creation of the anionic OH- fragment occurs only via resonant excitation below the carbon K edge; the fragment is completely absent near the oxygen K edge. This observation and comparison of all anion and cation partial yields confirm the existence of at least two mechanisms for the creation of anions near the carbon K edge.
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收藏
页码：L253 / L259
页数：7
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