The interaction of excited atoms and few-cycle laser pulses

被引：4

作者：

Calvert, J. E. ^{[1
,2
]}

Xu, Han ^{[1
,2
]}

Palmer, A. J. ^{[1
,2
]}

Glover, R. D. ^{[3
]}

Laban, D. E. ^{[1
,2
]}

Tong, X. M. ^{[4
,5
]}

Kheifets, A. S. ^{[6
]}

Bartschat, K. ^{[1
,2
,7
]}

Litvinyuk, I. V. ^{[1
,2
]}

Kielpinski, D. ^{[1
,2
]}

Sang, R. T. ^{[1
,2
]}

机构：

[1] Griffith Univ, Australian Attosecond Sci Facil, Brisbane, Qld, Australia

[2] Griffith Univ, Ctr Quantum Dynam, Brisbane, Qld 4111, Australia

[3] Univ Liege, Inst Atom & Nucl Phys, B-4000 Liege, Belgium

[4] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan

[5] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058571, Japan

[6] Australian Natl Univ, Res Sch Phys & Engn, Canberra, ACT 0200, Australia

[7] Drake Univ, Dept Phys & Astron, Des Moines, IA 50311 USA

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

DOUBLE-IONIZATION; FIELD; GENERATION; MOLECULES; RATES;

D O I：

10.1038/srep34101

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This work describes the first observations of the ionisation of neon in a metastable atomic state utilising a strong-field, few-cycle light pulse. We compare the observations to theoretical predictions based on the Ammosov-Delone-Krainov (ADK) theory and a solution to the time-dependent Schrodinger equation (TDSE). The TDSE provides better agreement with the experimental data than the ADK theory. We optically pump the target atomic species and measure the ionisation rate as the a function of different steady-state populations in the fine structure of the target state which shows significant ionisation rate dependence on populations of spin-polarised states. The physical mechanism for this effect is unknown.

引用

页数：9

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Han Xu
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K. Bartschat
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