Lineshapes of autoionizing molecular Rydberg states probed by laser-induced grating spectroscopy

Journal Article · Wed May 01 04:00:00 EDT 1996 · Bulletin of the American Physical Society

OSTI ID:394265

McCormack, E F; Pratt, S T; Dehmer, P M; Dehmer, J L ^[1]

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1. Argonne National Lab., IL (United States)

Two-color laser-induced grating spectroscopy (TC-LIGS) of NO via the A {sup 2}{Sigma}, v{prime} = 0 and 1 state has been used to investigate several ns, np, and nf Rydberg states of NO. Transition energies and lineshapes obtained with this four-wave mixing technique are compared to those obtained by using multiphoton ionization detection. Rydberg series converging to the first ionization potential are observed up to n{approx}40; higher members of the Rydberg series are obscured by a continuum contribution to the LIGS signal. At low laser powers the linewidths of the observed autoionizing states obtained by using TC-LIGS are in agreement with data obtained from ionization studies. However, with higher laser powers, the lineshapes of the autoionizing states change dramatically.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 394265
• Report Number(s): CONF-9605105--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 41; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AUTOIONIZATION
LINE WIDTHS
NITRIC OXIDE
RYDBERG STATES