Resonant Two-Photon Detachment through the Lowest SingletDState in $H^{-}$

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16 October 1995

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 75 (16) , 2924-2927
https://doi.org/10.1103/physrevlett.75.2924

Abstract

We report the measurement of the two-photon detachment spectrum of the

{}^{1}D^{e}

resonance of

H^{-}

just below the

n = 2

threshold. The excess photon detachment resonance fits a Fano profile with energy 10.872(2) eV (relative to

H^{-}

ground state), a width of 0.0105(10) eV, and a shape parameter of

- 8 (2)

. To our knowledge, this describes the first time direct multiphoton excitation of a resonance has been observed in any negative atomic ion.

Keywords

This publication has 18 references indexed in Scilit:

Resonance Structure in the ${Li}^{-}$ Photodetachment Cross Section
Physical Review Letters, 1995
Multiphoton detachment, ionization, and simultaneous excitation of two-electron systems
Physical Review A, 1994
Observation of resonant excess-photon detachment via a window resonance in the cesium negative ion
Physical Review Letters, 1992
Two- and three-photon detachment ofH−by a weak field
Physical Review A, 1992
Multiphoton detachment from H-
Journal of Physics B: Atomic, Molecular and Optical Physics, 1990
Above-threshold two-photon detachment from H-: a way to measure1S and1D resonances?
Journal of Physics B: Atomic, Molecular and Optical Physics, 1988
Effects of strong electric fields on resonant structures in $H^{-}$ photodetachment
Physical Review A, 1983
Effect of an electric field on autoionising states of H-
Journal of Physics B: Atomic and Molecular Physics, 1978
Effect of an Electric Field upon Resonances in the $H^{-}$ Ion
Physical Review Letters, 1978
Electron Transmission Spectroscopy in Atomic Hydrogen
Physical Review Letters, 1972