TIME-RESOLVED SPECTRA OF RARE-EARTH IONS

Journal Article · Fri Jun 01 04:00:00 EDT 1962 · Journal of the Optical Society of America (U.S.)

DOI:https://doi.org/10.1364/JOSA.52.000649· OSTI ID:4829048

Hovis, Jr, W A

An apparatus was developed for the study of the afterglow of a rare- earth spark with a time resolution of 0.1 mu sec. A hydrogen thyratron controls a rapidly firing spark gap and the spectrum of the afterglow is recorded with Pulsed photomultipliers and ratio techniques. Tests with praseodymium showed that it is possible to separate lines according to the ion of origin for the second, third, and fourth spectra, according to configuration of origin in the third spectrum of praseodymium, for example, the emission lines of the 4f/sup 2/ 6p-4f/sup 2/6s and 4f/sup 2/5d-4f/sup 3/ transitions. In the cas e of the 4f/sup 2/5d--4f/sup 3/ transit~on, some terms of the 4f/sup 2/5d configuration are indicated from the more intense lines. The methods developed with praseodymium were applied to neodymium, and some preliminary results are reported. (auth)

• Research Organization: Johns Hopkins Univ., Baltimore
• NSA Number: NSA-16-020430
• OSTI ID: 4829048
• Journal Information: Journal of the Optical Society of America (U.S.), Journal Name: Journal of the Optical Society of America (U.S.) Vol. Vol: 52; ISSN JOSAA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
CONFIGURATION
ELECTRON TUBES
ENERGY LEVELS
HYDROGEN
HYPERFINE STRUCTURE
IONS
NEODYMIUM
PHOTOMULTIPLIERS
PRASEODYMIUM
RARE EARTHS
RECORDING SYSTEMS
RESOLUTION
SPARK CHAMBERS
SPECTRA
SPECTRAL SHIFT
THYRATRONS
TRANSIENTS