Phys. Rev. Lett. 86, 1725 - 1728 (2001)Direct Measurement of a Pure Rotation Transition in H2+ |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1981: |
Andrew D. J. Critchley, Alan N. Hughes, and Iain R. McNab *
Department of Physics, University of Newcastle upon Tyne, Newcastle upon Tyne NE1 7RU, United Kingdom
Received 25 September 2000
The N = 1←0 pure rotation transition in the ν = 19 level of the ground electronic state of H2+ was observed at 14 961.7±1.1 MHz. Recent theory predicts significant electric dipole intensity in forbidden rotation and rotation-vibration transitions involving levels near the dissociation limit; the relevant levels are bound by only 0.74 and 0.22 cm-1. The transition was predicted to have a transition moment of 0.42 D; our measurement is consistent with this value.
©2001 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v86/p1725
DOI: 10.1103/PhysRevLett.86.1725
PACS: 33.70.Ca, 31.15.Pf, 31.30.Gs, 33.20.Bx
* Corresponding author. Electronic address: iain.mcnab@ncl.ac.uk
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