Angular Tunneling Ionization Probability of Fixed-in-Space H2 Molecules in Intense Laser Pulses

被引：124

作者：

Staudte, A. ^{[1
]}

Patchkovskii, S. ^{[1
]}

Pavicic, D. ^{[1
]}

Akagi, H. ^{[1
,3
]}

Smirnova, O. ^{[1
]}

Zeidler, D. ^{[1
]}

Meckel, M. ^{[1
,2
]}

Villeneuve, D. M. ^{[1
]}

Doerner, R. ^{[2
]}

Ivanov, M. Yu. ^{[1
]}

Corkum, P. B. ^{[1
]}

机构：

[1] Natl Res Council Canada, Ottawa, ON K1A 0R6, Canada

[2] Univ Frankfurt, Inst Kernphys, D-60486 Frankfurt, Germany

[3] Japan Atom Energy Agcy, Quantum Beam Sci Directorate, Tokai, Ibaraki 3191195, Japan

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 03期

关键词：

STRONG-FIELD IONIZATION; DISSOCIATION; MOLECULES; DYNAMICS; ANATOMY; WAVE; N-2; H2;

D O I：

10.1103/PhysRevLett.102.033004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a new approach to obtain molecular frame photoelectron angular distributions from molecules ionized by intense laser pulses. With our method we study the angular tunnel ionization probability of H-2 at a wavelength of 800 nm over an intensity range of 2-4.5x10(14) W/cm(2). We find an anisotropy that is stronger than predicted by any existing model. To explain the observed anisotropy and its strong intensity dependence we develop an analytical model in the framework of the strong-field approximation. It expresses molecular ionization as a product of atomic ionization rate and a Fourier transform of the highest occupied molecular orbital filtered by the strong-field ionization process.

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页数：4

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