EFFECT OF PRESSURE ON THE SPECTRA OF COLOR CENTERS

Journal Article · Sun May 01 04:00:00 EDT 1960 · Journal of Chemical Physics (U.S.)

DOI:https://doi.org/10.1063/1.1730933· OSTI ID:4162660

Eppler, R A; Drickamer, H G

The effect of pressure on the spectra of certain color centers produced in the alkali halides by x irradiation was measured to pressures as high as 166,000 atm. For the F center a shift to higher energies with increasing pressure is observed. The slope of the shift versus density ia at least twice the value that would be predicted from Ivey' s relation at low pressure, and decreases with increasing pressure. Tnis indicates that the compressibility in the neighborhood of the F center is greater than in the bulk crystal, particularly at low pressure. For the M center in LiCl a shift to higher energy with increasing pressure is observed, about one-fifth as great as the shift observed for the F center. (auth)

• Research Organization: Univ. of Illinois, Urbana
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-017119
• OSTI ID: 4162660
• Journal Information: Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 32; ISSN JCPSA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALKALI METALS
COLOR
CRYSTALS
DENSITY
HALIDES
IRRADIATION
LITHIUM CHLORIDES
MEASURED VALUES
PHYSICS
PRESSURE
SPECTRA
SPECTRAL SHIFT
X RADIATION