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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1991),
  • paper QMA6

Observation of Fano windows in Ne2

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Abstract

By using a laser-excitation spectroscopic approach developed previously for low-lying Kr2 and Ne2 Rydberg states, we have observed a series of Ne2 Rydberg states that appear as emission windows in the predissociative continuum lying above the first ionization limit (i,e.,Ne2+(X2u1v+=0). In fact, at least three distinct Rydberg series are observed that converge to v+ = 1, 2, and 3 of the Ne2+ ground (X2ν+) state. The resonances are spectrally narrow (Δv <2 GHz), and transitions associated with principal quantum numbers ranging from n = 15 to 27 are detected. Analysis of the three series allows for the dimerion ground-state vibrational constants to be determined. For 20Ne2+, they are ωc= 605.2±2.0 cm−1 and ωexe = 9.6±0.8 cm−1.

© 1991 Optical Society of America

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