XUV ionization of the H2 molecule studied with attosecond angular streaking

被引：4

作者：

Serov, Vladislav V. ^{[1
]}

Kheifets, Anatoli S. ^{[2
]}

机构：

[1] Saratov NG Chernyshevskii State Univ, Gen Theoret & Comp Phys, Saratov 410012, Russia

[2] Australian Natl Univ, Res Sch Phys, Canberra, ACT 2601, Australia

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2023年 / 56卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

molecules; photoionization; time delay; TIME-DELAY; PHOTOIONIZATION; INTERFERENCE; PULSES;

D O I：

10.1088/1361-6455/acaa23

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study orientation and two-center interference effects in attosecond time-resolved photoionization of the H-2 molecule. Time resolution of extreme-ultraviolet ionization of H-2 is gained through the phase retrieval capability of attosecond angular streaking demonstrated earlier by Kheifets et al (2022 Phys. Rev. A 106 033106). Once applied to H-2, this technique delivers an anisotropic phase and time delay which both depend sensitively on the molecular axis orientation. In addition, the photoelectron momentum distribution displays a very clear two-center interference pattern. When the interference formula of Walter and Briggs (1999 J. Phys. B 32 2487) is applied, an effective photoelectron momentum appears to be greater than the asymptotic momentum at the detector. This effect is explained by a molecular potential well surrounding the photoemission center.

引用

页数：10

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