XUV-laser spectroscopy of HD at 92--98 nm
- Department of Physics and Astronomy, Laser Centre Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam (Netherlands)
Sub-Doppler excitation spectra of HD have been recorded in the range 92--98 nm with the use of a narrow-band and tunable extreme ultraviolet laser in combination with a molecular beam. Frequencies of 147 transitions to the {ital B} {sup 1}{Sigma}{sub {ital u}}{sup +}, {ital C} {sup 1}{Pi}{sub {ital u}}, and {ital EF} {sup 1}{Sigma}{sub {ital g}}{sup +} states have been calibrated with an average absolute accuracy of 0.035 cm{sup {minus}1}. The data have been analyzed in the framework of a semiempirical deperturbation model involving mutual couplings between nearby lying levels of the {ital B} {sup 1}{Sigma}{sub {ital u}}{sup +} and {ital C} {sup 1}{Pi}{sub {ital u}} states. Also, symmetry-breaking effects, i.e., interactions with {ital EF} {sup 1}{Sigma}{sub {ital g}}{sup +} gerade states, were inferred from the data.
- OSTI ID:
- 151392
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 6 Vol. 52; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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