EFFECT OF PRESSURE ON THE SPECTRA OF RARE EARTH IONS IN CRYSTALS

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Journal of Chemical Physics (U.S.)

DOI:https://doi.org/10.1063/1.1731555· OSTI ID:4083583

Keating, K B; Drickamer, H G

The effect of pressure to 180,000 atm was measured on the absorption spectra of crystalline rare-earth ions. The effects observed include: An increase of intensity due to increased mixing of 5d and 4f orbitals in the excited state due to an increase of the mixing potential with decreased interionic distance; Small shifts accompanied by increases in half-width. Except for the shifts of /sup 3/P/sub o/, /sup 3/P/sub 1/, and /sup 3/P/sub 2/ l evels of Pr/sup 3+/, these can be accounted for by an increase in the splitting of the individual levels due to intensification of the crystal field; and Changes in shape of several of the bands, possibly due to changes in occupation of the various states which make up the bands. (auth)

• Research Organization: Univ. of Illinois, Urbana
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-011817
• OSTI ID: 4083583
• Journal Information: Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 34; ISSN JCPSA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ATOMIC MODELS
CONFIGURATION
CRYSTALS
ELECTRIC FIELDS
ENERGY LEVELS
EXCITATION
IONS
MEASURED VALUES
ORBITS
PHYSICS
PRASEODYMIUM
PRESSURE
RARE EARTHS
SPECTRA
SPECTRAL SHIFT