Momentum-resolved above-threshold ionization of deuterated water

被引：22

作者：

Cheng, Chuan ^{[1
]}

Forbes, Ruaridh ^{[2
,3
]}

Howard, Andrew J. ^{[2
,4
]}

Spanner, Michael ^{[5
,6
]}

Bucksbaum, Philip H. ^{[2
,3
,4
]}

Weinacht, Thomas ^{[1
]}

机构：

[1] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA

[2] Stanford PULSE Inst, SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA

[3] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[4] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[5] Natl Res Council Canada, 100 Sussex Dr, Ottawa, ON K1A 0R6, Canada

[6] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada

来源：

PHYSICAL REVIEW A | 2020年 / 102卷 / 05期

基金：

美国国家科学基金会;

关键词：

Deuterium - Molecular orbitals - Ionization of liquids - Photons - Ions - Photoionization - Photoelectron spectroscopy - Photoelectrons;

D O I：

10.1103/PhysRevA.102.052813

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present momentum-resolved coincidence measurements of strong-field single and double ionization of deuterated water (D2O) using intense few-cycle laser pulses. We measure the vector momentum of electrons and ions resulting from the laser-molecule interaction. This enables us to measure the photoelectron spectrum for electrons in coincidence with fragment ions having different momenta, which can be related to different final states of the cation and dication. The photoelectron spectra for different fragment ion momenta show striking differences, which can be interpreted in terms of the removal of electrons from different molecular orbitals, including the highest occupied molecular orbital (HOMO), as well as more deeply bound ones (e.g., HOMO-2). We discuss our measurements in light of calculations which model the strong-field light matter interaction.

引用

页数：6

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