Negative ion spectroscopy with stored H{sup -} ions

This paper reviews the results obtained in recent years from spectroscopic studies of the negative hydrogen ion at the ASTRID storage ring. The two lowest-lying members of the {sup 1}P{sup 0} dipole series of autodetaching resonances in H{sup -} located just below the H(n=2) threshold have been obse...

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Bibliographic Details
Main Authors: Andersen, T., Andersen, H. H., Balling, P., Petrunin, V. V.
Format: Conference Proceeding
Language:English
Subjects:
ASTRID STORAGE RING
ATOMIC AND MOLECULAR PHYSICS
DEUTERIUM IONS
DIPOLES
ELECTRON COOLING
ELECTRON DETACHMENT
HYDROGEN IONS 1 MINUS
ISOTOPE EFFECTS
LASER RADIATION
LASER SPECTROSCOPY
P STATES
PHOTON-ATOM COLLISIONS
RESONANCE
REVIEWS
ULTRAVIOLET RADIATION
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Summary:This paper reviews the results obtained in recent years from spectroscopic studies of the negative hydrogen ion at the ASTRID storage ring. The two lowest-lying members of the {sup 1}P{sup 0} dipole series of autodetaching resonances in H{sup -} located just below the H(n=2) threshold have been observed and characterised, using Doppler-tuned collinear laser spectroscopy. The resonance positions have been determined for both H{sup -} and D{sup -}, allowing also a critical test of the predicted isotope effects. Further studies are in progress based on electron cooling of the negative hydrogen ion beam.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.57445