Rovibrational spectroscopy of trapped molecular hydrogen ions at millikelvin temperatures

Journal Article · Sun Oct 15 00:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.040501· OSTI ID:20857798

Roth, B; Koelemeij, J C. J.; Daerr, H; Schiller, S ^[1]

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1. Institut fuer Experimentalphysik, Heinrich-Heine-Universitaet Duesseldorf, 40225 Duesseldorf (Germany)

We report a high-resolution spectroscopic study of molecular ions at millikelvin temperatures. We measured several rovibrational infrared transitions in HD{sup +} molecular ions, stored in a radio-frequency trap and sympathetically cooled to {approx_equal}20 mK by laser-cooled Be{sup +} ions. We observed hyperfine splitting of the lines, in good agreement with theoretical predictions. The transitions were detected by monitoring the decrease in ion number after selective photodissociation of HD{sup +} ions in the upper vibrational state. The method described here is expected to be generally applicable.

• OSTI ID: 20857798
• Journal Information: Physical Review. A, Vol. 74, Issue 4; Other Information: DOI: 10.1103/PhysRevA.74.040501; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BERYLLIUM IONS
COOLING
DEUTERIUM
DISSOCIATION
HYDROGEN IONS
HYPERFINE STRUCTURE
LASER RADIATION
MOLECULAR IONS
PHOTON-MOLECULE COLLISIONS
RADIATION PRESSURE
RADIOWAVE RADIATION
SPECTROSCOPY
TRAPPING
TRAPS
VIBRATIONAL STATES