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.

引用

页码：L253 / L259

页数：7

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