Two-Center Interference in the Photoionization Delays of Kr2

被引：17

作者：

Heck, Saijoscha ^{[1
]}

Han, Meng ^{[1
]}

Jelovina, Denis ^{[1
]}

Ji, Jia-Bao ^{[1
]}

Perry, Conaill ^{[1
]}

Gong, Xiaochun ^{[2
]}

Lucchese, Robert ^{[3
]}

Ueda, Kiyoshi ^{[1
,4
]}

Woerner, Hans Jakob ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Lab Phys Chem, CH-8093 Zurich, Switzerland

[2] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200241, Peoples R China

[3] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[4] Tohoku Univ, Dept Chem, Sendai, Miyagi 9808578, Japan

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 13期

基金：

瑞士国家科学基金会; 欧洲研究理事会;

关键词：

MOMENTUM SPECTROSCOPY; DOUBLE-SLIT; RECOIL-ION;

D O I：

10.1103/PhysRevLett.129.133002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the experimental observation of two-center interference in the ionization time delays of Kr-2. Using attosecond electron-ion-coincidence spectroscopy, we simultaneously measure the photoionization delays of krypton monomer and dimer. The relative time delay is found to oscillate as a function of the electron kinetic energy, an effect that is traced back to constructive and destructive interference of the photoelectron wave packets that are emitted or scattered from the two atomic centers. Our interpretation of the experimental results is supported by solving the time-independent Schrodinger equation of a 1D double-well potential, as well as coupled-channel multiconfigurational quantum-scattering calculations of Kr-2. This work opens the door to the study of a broad class of quantum-interference effects in photoionization delays and demonstrates the potential of attosecond coincidence spectroscopy for studying weakly bound systems.

引用

页数：6

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