Time-resolved nuclear dynamics in bound and dissociating acetylene

被引：9

作者：

Burger, C. ^{[1
,2
]}

Atia-Tul-Noor, A. ^{[3
,4
]}

Schnappinger, T. ^{[5
]}

Xu, H. ^{[3
,4
]}

Rosenberger, P. ^{[1
,2
]}

Haram, N. ^{[3
,4
]}

Beaulieu, S. ^{[6
,7
]}

Legare, F. ^{[6
]}

Alnaser, A. S. ^{[8
,9
]}

Moshammer, R. ^{[10
]}

Sang, R. T. ^{[3
,4
]}

Bergues, B. ^{[1
,2
]}

Schuurman, M. S. ^{[11
]}

de Vivie-Riedle, R. ^{[5
]}

Litvinyuk, I., V ^{[3
,4
]}

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

机构：

[1] Ludwig Maximilians Univ Munchen, Dept Phys, D-85748 Garching, Germany

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

[3] Griffith Univ, Ctr Quantum Dynam, Nathan, Qld 4111, Australia

[4] Griffith Univ, Australian Attosecond Sci Facil, Nathan, Qld 4111, Australia

[5] Ludwig Maximilians Univ Munchen, Dept Chem & Biochem, D-81377 Munich, Germany

[6] Inst Natl Rech Sci, Energie Mat & Telecommun, Varennes, PQ J3X 1P7, Canada

[7] Univ Bordeaux, CNRS, CEA, CELIA,UMR 5107, F-33405 Talence, France

[8] Amer Univ Sharjah, Dept Phys, POB 26666, Sharjah, U Arab Emirates

[9] Amer Univ Sharjah, Mat Sci & Engn Res Inst, POB 26666, Sharjah, U Arab Emirates

[10] Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany

[11] Natl Res Council Canada, 100 Sussex Dr, Ottawa, ON K1A 0R6, Canada

来源：

STRUCTURAL DYNAMICS-US | 2018年 / 5卷 / 04期

基金：

加拿大自然科学与工程研究理事会; 欧洲研究理事会;

关键词：

MOLECULAR-ORBITAL METHODS; STRONG-FIELD IONIZATION; ULTRAFAST DYNAMICS; ENHANCED IONIZATION; PROGRAM SYSTEM; COLUMBUS; CI;

D O I：

10.1063/1.5037686

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated nuclear dynamics in bound and dissociating acetylene molecular ions in a time-resolved reaction microscopy experiment with a pair of few-cycle pulses. Vibrating bound acetylene cations or dissociating dications are produced by the first pulse. The second pulse probes the nuclear dynamics by ionization to higher charge states and Coulomb explosion of the molecule. For the bound cations, we observed vibrations in acetylene (HCCH) and its isomer vinylidene (CCHH) along the CC-bond with a periodicity of around 26 fs. For dissociating dication molecules, a clear indication of enhanced ionization is found to occur along the CH- and CC-bonds after 10 fs to 40 fs. The time-dependent ionization processes are simulated using semi-classical on-the-fly dynamics revealing the underling mechanisms. (C) 2018 Author(s).

引用

页数：13

共 51 条

[31] Intramolecular electron dynamics in the ionization of acetylene by an intense laser pulse [J].