✦ LIBER ✦

Reduced equations of motion for collision-induced intersystem crossing

✍ Scribed by Shaul Mukamel

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 408 KB
Volume: 60
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(79)80041-x

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✦ Synopsis

A model is proposed for colhsion-induced intersystem crossing in "intermediate case" and small moieccules. The collisions are assumed to cause dephasing (Tz) among the zero order singlet and triplet molecular states. The combined effect of the intramoIecu!a.r spin-orbit coupling (H) and the coUisional dephasing, results in the e~perimentahy observable reIaxation of populations (T,). ?Fhe basic assumption of the present model is that the duration of a cohision zc is short compared to the intramo!ecuIar coupling (prc ( 1). Reduced equations of motion for the moiecnhu density matrix are derived and conditions for observing noneXponentisJ rek..ations are discnssed. The model demonstrates the equivalence. of T, and T2 processes, depending on our choice of a basis set

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