Two-photon spectroscopy of N sub 2 : Multiphoton ionization, laser-induced fluorescence, and direct absorption via the a double prime sup 1. Sigma. sup + sub g state

Journal Article · Thu Aug 15 04:00:00 EDT 1991 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.460981· OSTI ID:5730495

Lykke, K R; Kay, B D ^[1]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87185 (US)

A new (2+1) resonantly enhanced multiphoton ionization (REMPI) process via the {ital a}{double prime} {sup 1}{Sigma}{sup +}{sub {ital g}} state of N{sub 2} with a quantum specific detection sensitivity of {similar to}10{sup 5} molecule cm{sup {minus}3} is reported. The resulting spectra are easily analyzed and yield {ital directly} the relative rotational and vibrational populations in the ground electronic state of N{sub 2}. Additionally, both two-photon direct absorption (TPDA) to, and laser-induced fluorescence (LIF) from two-photon excitation of, the {ital a}{double prime} state of N{sub 2} are observed. These spectroscopies are compared with (2+1) REMPI and TPDA via the {ital E},{ital F} state of H{sub 2}.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5730495
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 95:4; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
DETECTION
ELEMENTS
ENERGY LEVELS
FLUORESCENCE
GROUND STATES
IONIZATION
LUMINESCENCE
MULTI-PHOTON PROCESSES
NITROGEN
NONMETALS
PHOTOIONIZATION
SPECTRA