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Detection of nitrogen rotational distributions by resonant 2 + 2 multiphoton ionization through the a1Πg state

✍ Scribed by Karen L. Carleton; Karl H. Welge; Stephen R. Leone

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
434 KB
Volume
115
Category
Article
ISSN
0009-2614

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✦ Synopsis

Characterization of laser 2+2 multiphoton ionization of nitrogen to obtain rotational state distributions has been investigated via the resonant two-photon transition a'lI,(u =l) -X lZs( u = 0). For room-temperature nitrogen, the spectral intensities and state distribution are directly related and give rotational temperatures of 290+20 K_ For power densities of 3 GW/cm'. the ionization probability is 1 x10-' per N2 molecule per average rotational state.

' 1984-85 JlLA Visiting Fellow.

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