Recoil anisotropy following multiphoton dissociation via near-resonant intermediate states

Journal of Chemical Physics

Volumn 122, Issue 19, 2005, Pages

  Dixon, Richard N ^a  

^a UNIVERSITY OF BRISTOL   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

DIATOMIC MOLECULES; FRAGMENTATION PROCESSES; NEAR-RESONANT INTERMEDIATE STATES; POLYATOMIC SYSTEMS;

ANISOTROPY; DATA REDUCTION; GRAPHIC METHODS; LIGHT POLARIZATION; MATHEMATICAL MODELS; PHOTODISSOCIATION;

PHOTONS;

EID: 21444450016     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1896951     Document Type: Article

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19. If the excitation route involves a S intermediate state, contributions from terms with uDf -Diu and uDf +Diu interfere with opposite phases for excitation from the two levels of a L-doublet pair. Thus the observation of different anisotropy with excitation from such a pair of levels is direct evidence for the involvement of a S intermediate state. However, if all transitions involving such doublets are unresolved within finite linewidths, summing over both signs of L is then equivalent to summing over such pairs of transitions, and the interference cancels.
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