Ultrafast Imaging of Electronic Relaxation in Ortho-xylene: New Features from Fragmentation-Ion Spectroscopy

被引：7

作者：

Liu Yu-Zhu ^{[1
]}

Knopp Gregor ^{[2
]}

Xiao Shao-Rong ^{[1
]}

Gerber Thomas ^{[2
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Coll Phys & Optoelect Engn, Nanjing 210044, Jiangsu, Peoples R China

[2] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

来源：

CHINESE PHYSICS LETTERS | 2014年 / 31卷 / 12期

基金：

中国国家自然科学基金;

关键词：

INTERNAL-CONVERSION; PHOTOELECTRON; 1-NITRONAPHTHALENE; DYNAMICS;

D O I：

10.1088/0256-307X/31/12/127802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

As a continuous work of tracking electronic relaxation of the S-2 state in o-xylene by photoelectron imaging [Y. Liu et al., Phys. Chem. Chem. Phys. 15 (2013) 18101], we report another contribution from the view of fragment-ion spectroscopy. Three components with time constants of tau(1) congruent to 60 fs, tau(2) = 55(+/- 20) fs and tau(3) = 6.99(+/- 0.25) ps are observed for the only fragment-ion C6H4CH3+. The velocity map image of the fragment-ion against the delay time are also measured. Transient information about the kinetic energy of the fragment-ion and angular distribution are analyzed and discussed. New features for competing ultrafast internal conversion and intersystem crossing are obtained.

引用

页数：4

共 19 条

[1]

[Anonymous], THESIS U KIEL KIEL

[2] Ultrafast Dynamics of Polythiophene with Phenyl Vinylene Branches Studied by Femtosecond Fluorescence Spectroscopy in Solution [J].

Chu Sai-Sai ;

Gao Chao ;

Wang Shu-Feng ;

Gong Qi-Huang .

CHINESE PHYSICS LETTERS, 2011, 28 (11)

[3] Velocity map imaging of ions and electrons using electrostatic lenses: Application in photoelectron and photofragment ion imaging of molecular oxygen [J].

Eppink, ATJB ;

Parker, DH .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1997, 68 (09) :3477-3484

[4] Charged particle velocity map image reconstruction with one-dimensional projections of spherical functions [J].

Gerber, Thomas ;

Liu, Yuzhu ;

Knopp, Gregor ;

Hemberger, Patrick ;

Bodi, Andras ;

Radi, Peter ;

Sych, Yaroslav .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2013, 84 (03)

[5] Ultrafast dynamics in isolated molecules and molecular clusters [J].

Hertel, I. V. ;

Radloff, W. .

REPORTS ON PROGRESS IN PHYSICS, 2006, 69 (06) :1897-2003

[6] Ultrafast imaging of electronic relaxation in o-xylene: a new competing intersystem crossing channel [J].

Liu, Yuzhu ;

Knopp, Gregor ;

Hemberger, Patrick ;

Sych, Yaroslav ;

Radi, Peter ;

Bodi, Andras ;

Gerber, Thomas .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (41) :18101-18107

[7] Real-time observation of ultrafast internal conversion in ethylbenzene by femtosecond time-resolved photoelectron imaging [J].

Liu, Yuzhu ;

Gerber, Thomas ;

Sych, Yaroslav ;

Radi, Peter ;

Knopp, Gregor .

OPTICS EXPRESS, 2013, 21 (14) :16639-16647

[8] Competing ultrafast intersystem crossing and internal conversion: a time resolved picture for the deactivation of 6-thioguanine [J].

Martinez-Fernandez, Lara ;

Corral, Ines ;

Granucci, Giovanni ;

Persico, Maurizio .

CHEMICAL SCIENCE, 2014, 5 (04) :1336-1347

[9]

McQuarrie D. A., 1997, PHYS CHEM MOL APPROA

[10]

Minns RS, 2010, PHYS CHEM CHEM PHYS, V12, P15607, DOI 10.1039/c00671c

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