Observation of photo-double ionization of carbon monoxide below the adiabatic double-ionization potential by threshold-photoelectron-photoelectron coincidence spectroscopy

被引：8

作者：

Thompson, DB ^{[1
]}

Dawber, G ^{[1
]}

Gulley, N ^{[1
]}

MacDonald, MA ^{[1
]}

King, GC ^{[1
]}

机构：

[1] CCLRC,DARESBURY LAB,WARRINGTON WA4 4AD,CHESHIRE,ENGLAND

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1997年 / 30卷 / 05期

关键词：

D O I：

10.1088/0953-4075/30/5/004

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The production of C+ and O+ ion pairs in carbon monoxide at photon energies below the adiabatic double-ionization threshold of 41.25 eV has been probed in a threshold photoelectron-photoelectron coincidence (TPEPECO) experiment using tunable VUV radiation and a sensitive electron spectrometer. The TPEPECO spectra provide evidence of C+ + O+ production that does not involve creation and dissociation of a molecular dication, but instead results from complete dissociation of a molecular cation followed by autoionization of the atomic oxygen fragment. Furthermore, an electron-electron coincidence signal has been detected at photon energies as low as 36.5 eV, well below the previously measured onset for C+ + O+ production.

引用

页码：L147 / L153

页数：7

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