VACUUM-ULTRAVIOLET ABSORPTION STUDIES OF IRRADIATED SILICA AND QUARTZ

Journal Article · Mon May 01 04:00:00 EDT 1961 · Journal of Applied Physics (U.S.)

DOI:https://doi.org/10.1063/1.1736124· OSTI ID:4012274

Nelson, C M; Weeks, R A

The optical absorption properties of Co/sup 6//sup 0/-irradiated fused silica and crystalline quartz are studied ln the vacuum-ultraviolet region. The most prominent absorptlon band found in both materials has a msximum at 7.6 ev (1620A). Optical and thermal bleaching experiments indicate that this band is not necessarily complementary to a band at 5.9 ev (2100A), as has been assumed. Though the 7.6 ev band has approximately the same intensity in both materials for the same irradiation, the 5.9 ev band is)2O times more intense in fused silica. The 7.6 ev band is still present after the 5.9 ev band is thermally bleached. Additional absorption bands occur at 8.0 and 8.2 ev. Also, optl-cal and thermal bleaching experiments suggest other absorption bands at 7.2, 7.4, 7.8, and 7.9 ev. Since these bands (particularly the 7.6, 8.0, and 8.2 ev bands) occur in high- purity silica and quartz, it is suggested that they are associated with defects in the quartz structure and are not caused by impurities. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-018560
• OSTI ID: 4012274
• Journal Information: Journal of Applied Physics (U.S.), Journal Name: Journal of Applied Physics (U.S.) Vol. Vol: 32; ISSN JAPIA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ANNEALING
BLEACHING
COBALT 60
CRYSTALS
DEFECTS
ENERGY LEVELS
GAMMA RADIATION
GAMMA SOURCES
HEATING
IRRADIATION
LATTICES
METALS, CERAMICS, AND OTHER MATERIALS
QUARTZ
RADIATION EFFECTS
SILICON OXIDES
SPECTRA
ULTRAVIOLET RADIATION
VACUUM