Predissociation dynamics of the B state of CH_3I by femtosecond pump-probe technique | Zendy

Yanmei Wang | Zendy; Huan Shen | Zendy; LinQiang Hua | Zendy; Changjin Hu | Zendy; Bing Zhang | Zendy

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Predissociation dynamics of the B state of CH_3I by femtosecond pump-probe technique

Author(s) -

Yanmei Wang,

Huan Shen,

LinQiang Hua,

Changjin Hu,

Bing Zhang

Publication year - 2009

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.17.010506

Subject(s) - femtosecond , atomic physics , rydberg formula , rydberg state , spectroscopy , coupling (piping) , laser , absorption (acoustics) , physics , optics , materials science , ion , ionization , quantum mechanics , metallurgy

The laser induced predissociation dynamics of the B Rydberg state of CH(3)I following two-photon absorption of a pump pulse was studied with femtosecond pump-probe photoelectron imaging coupled with time-resolved mass spectroscopy. The predissociation lifetime was measured to be 1.55 ps induced by the crossing between the B state and the repulsive A-band. Two possible predissociation channels were observed originating from (a) direct coupling between the B state and the repulsive (3)Q(0) state and (b) a second crossing between the (3)Q(0) and (1)Q(1) states after the coupling between the B and (3)Q(0) states, respectively.

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