Intensity dependence of the dissociative ionization of DCl in few-cycle laser fields

被引：11

作者：

Li, H. ^{[1
,2
]}

Tong, X. M. ^{[3
,4
]}

Schirmel, N. ^{[5
]}

Urbasch, G. ^{[5
]}

Betsch, K. J. ^{[1
]}

Zherebtsov, S. ^{[1
]}

Suessmann, F. ^{[1
]}

Kessel, A. ^{[1
]}

Trushin, S. A. ^{[1
]}

Paulus, G. G. ^{[6
,7
]}

Weitzel, K-M ^{[5
]}

Kling, M. F. ^{[1
,2
]}

机构：

[1] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[2] Univ Munich, Fak Phys, D-85748 Garching, Germany

[3] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

[4] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058577, Japan

[5] Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany

[6] Univ Jena, Inst Opt & Quantenelekt, D-07743 Jena, Germany

[7] Helmholtz Inst Jena, D-07743 Jena, Germany

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2016年 / 49卷 / 01期

基金：

日本学术振兴会;

关键词：

CEP control; attosecond physics; molecular dynamics; ENVELOPE-PHASE DEPENDENCE; ELECTRON LOCALIZATION; MOLECULES; BOND;

D O I：

10.1088/0953-4075/49/1/015601

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have studied the dissociative ionization of DCl in 4 fs laser fields at 720 nm central wavelength using intensities in the range (1.3-3.1) x 10(14) W cm(-2). By employing the phase-tagged velocity-map imaging technique, information about the angular distribution of deuterium ions as a function of their kinetic energy and the carrier-envelope phase is obtained. On the basis of the experimental data and semi-classical simulations, three regions are distinguished for the resulting D+ ions with different kinetic energies. The one with the lowest kinetic energy, around 5-7 eV, is from dissociation involving the X-state of DCl+, populated through direct ionization with the laser field. The second region, around 7-11 eV, originates from rescattering induced dissociative ionization. Above 2 x 10(14) W cm(-2) D+ ions with kinetic energies exceeding 15 eV are obtained, which we ascribe to double ionization induced by rescattered electrons.

引用

页数：8

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