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Stimulated Raman pumping of C2− probed via resonant two-photon detachment

✍ Scribed by Esther de Beer; Yuexing Zhao; Ivan Yourshaw; Daniel M. Neumark

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 519 KB
Volume: 244
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(95)00967-9

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✦ Synopsis

We demonstrate for the first time that stimulated Raman pumping (SRP) can be used to vibrationally excite gas-phase negative ions. Results are presented for C 2 , in which stimulated Raman pumping excites a rotationally resolved transition 2 + between the v = 0 and v = 1 levels of the ground ~g state; this excitation is monitored by resonant two-photon detachment 2 + through the excited B ~, state. At least 35% conversion to the v = 1 level was achieved in this study. It is expected that this method is quite generally applicable and will provide an excellent tool for the study of the vibrational spectroscopy of negative ions.

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