Abstract

Accumulated photon-echo decays have been measured for the S 1 ←S 0 origin and several vibronic transitions of dilute xanthione in a xanthone host crystal. The temperature-dependent dephasing is explained as activation of a local phonon mode, while the low-temperature (1.7 K) decay determines the intersystem crossing rate to T 1 to be 19.6 ps. An interference in the echo experiment is analyzed and shown to be due to triplet-state absorption. Dispersed phosphorescence measurements with excitation into either S 1 or directly into the T 1 z spin sublevel show that the spin-lattice relaxation of this level is rapid compared with its decay to S 0 even at 1.7 K.

Full Text

Published Version

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.