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COLOR CENTER FORMATION BY PULSE IRRADIATION OF ALKALI HALIDES

Journal Article · · Physica Status Solidi (East Germany) Divided into Phys. Status Solidi A and Phys. Status Solidi B
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Preliminary observation was made of the absorption spectra of four alkali halides (LiF, NaCl, KCl, and KBr) at various intervals after bombardment, at room temperature, with a 2 microsecond pulse of 2 Mev electrons. The absorption was measured spectrographically using an underwater uranium spark light source which can be triggered either simultaneously'' with the electron beam or after a predetermined delay of a few microseconds or longer. In addition to the expected intense and persistent F-bands, transient absorption bands in the ultraviolet were observed in all cases, some with lifetimes of the order of a few tens of microseconds at room temperature, and others which persisted along with the F-band. These transient bands appeared to be due to trapped-hole centers such as the V/sup K-/, H/sup -/, or V/sub 1/-centers, which previously were observed only at low temperatures. (auth)
Research Organization:
Naval Research Lab., Washington, D.C.
Sponsoring Organization:
USDOE
NSA Number:
NSA-17-018147
OSTI ID:
4734490
Journal Information:
Physica Status Solidi (East Germany) Divided into Phys. Status Solidi A and Phys. Status Solidi B, Journal Name: Physica Status Solidi (East Germany) Divided into Phys. Status Solidi A and Phys. Status Solidi B Vol. Vol: 3; ISSN PHSSA
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ABSORPTION
CHEMISTRY
DEFECTS
ELECTRON BEAMS
IRRADIATION
LITHIUM FLUORIDES
POTASSIUM BROMIDES
POTASSIUM CHLORIDES
SODIUM CHLORIDES
SPECTRA
TEMPERATURE
ULTRAVIOLET RADIATION