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Vibrational State Resolved Lifetimes Of The Na2 21Σ+U Double Well State, Seth T. Ashman, Lutz Huwel, Roy Anunciado, Nadeepa Jayasundara
Vibrational State Resolved Lifetimes Of The Na2 21Σ+U Double Well State, Seth T. Ashman, Lutz Huwel, Roy Anunciado, Nadeepa Jayasundara
Engineering & Physics Faculty Publications
Lifetimes of individual Na2 ro-vibrational levels of the 21Σ + u double well-state have been measured using a delayed photoionization technique. Ground state Na2 produced in a molecular beam is excited resonantly by the doubled output of a pulsed dye laser in the range 333 – 357 nm and then ionized by a 532 nm photon from a time-delayed Nd:YAG laser. By appropriate excitation laser tuning and systematic variation of the probe laser delay, ro-vibrational level resolved lifetimes are obtained for v=25- 49. The double well state lifetime values are found to decrease from about 50 ns at v=25 to …