Laser induced fluorescence of trapped molecular ions

Conference · Wed Oct 01 00:00:00 EDT 1980

OSTI ID:6635150

Winn, J S

Laser induced fluoresence (LIF) spectra (laser excitation spectra) are conceptually among the most simple spectra to obtain. One need only confine a gaseous sample in a suitable container, direct a laser along one axis of the container, and monitor the sample's fluorescence at a right angle to the laser beam. As the laser wavelength is changed, the changes in fluorescence intensity map the absorption spectrum of the sample. (More precisely, only absorption to states which have a significant radiative decay component are monitored.) For ion spectroscopy, one could benefit in many ways by such an experiment. Most optical ion spectra have been observed by emission techniques, and, aside from the problems of spectral analysis, discharge emission methods often produce the spectra of many species, some of which may be unknown or uncertain. Implicit in the description of LIF given above is certainty as to the chemical identity of the carrier of the spectrum. This article describes a method by which the simplifying aspects of LIF can be extended to molecular ions (albeit with a considerable increase in experimental complexity over that necessary for stable neutral molecules).

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6635150
• Report Number(s): LBL-12002; CONF-8009131-1; TRN: 81-005102
• Resource Relation: Conference: NATO International Advanced Study Institute on Molecular ions: geometric and electronic structures, Kos, Greece, 30 Sep 1980
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
GASES
FLUORESCENCE SPECTROSCOPY
MOLECULAR IONS
ABSORPTION SPECTROSCOPY
LASER RADIATION
MASS SPECTROSCOPY
MEASURING METHODS
PULSE TECHNIQUES
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
EMISSION SPECTROSCOPY
FLUIDS
IONS
RADIATIONS
SPECTROSCOPY
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena