State-selective ionization of nitrogen in the X sup 2. Sigma. sup + sub gv sub + =0 and v sub + =1 states by two-color (1+ 1) photon excitation near threshold

Journal Article · Wed Nov 15 00:00:00 EST 1989 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.457417· OSTI ID:5368296

Trickl, T; Cromwell, E F; Lee, Y T; Kung, A H ^[1]

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1. Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory and Department of Chemistry, University of California, Berkeley, California 94720 (US)

Efficient generation of N{sup +}{sub 2}{ital X} {sup 2}{Sigma}{sup +}{sub {ital g}}({ital v}{sub +}=0,1) is demonstrated by an extreme-ultraviolet +visible (1+1) photon excitation scheme. The {ital c}{sup {prime}}{sub 4} {sup 1}{Sigma}{sup +}{sub {ital u}} ({ital v}{prime}=0,1) Rydberg states are used as intermediates. The N{sub 2} molecules are ionized near the {ital v}{sub +}=0 and {ital v}{sub +}=1 ionization thresholds. The autoionizing {ital nd}{delta}{sub {ital g}} {sup 1}{Delta}{sub {ital g}} Rydberg series with the rotational quantum numbers {ital N}=4, 5, and 6 (in the limit of {ital l} uncoupling) are observed for the first time. Extrapolation of the {ital N}=4 series yields an ionization energy of N{sub 2} of 125 666.959(67) cm{sup {minus}1}.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5368296
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 91:10; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CHARGED PARTICLES
ELEMENTS
ENERGY LEVELS
EXCITED STATES
IONIZATION
IONIZATION POTENTIAL
IONS
MOLECULAR IONS
MULTI-PHOTON PROCESSES
NITROGEN
NITROGEN IONS
NONMETALS
PHOTOIONIZATION
RYDBERG STATES
YIELDS