Radiation damage in BaF[sub 2] crystals

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:6712519

Woody, C L; Kierstead, J A; Levy, P W; Stoll, S

The effects of radiation damage and recovery have been studied in BaF[sub 2] crystals exposed to [sup 60]Co radiation. The change in optical transmission and scintillation light output have been measured as a function of dose up to 4.7 [times] 10[sup 6] rad. Although some crystals exhibit a small change in transmission, a greater change in scintillation light output is observed. Several 25 cm long crystals whichhave been irradiated show large changes in both transmission and light output. Recovery from radiation damage has been studied as a function of time and exposure to UV light. A long lived radiation induced phosphorescence has been observed in all irradiated samples which is distinct from the standard fast and slow scintillation emissions. The emission spectrum of the phosphorescence has been measured and shown a peakat [approximately]330 nm, near the region of the slow scintillation component. Results are given on the dependence of the decay time of the phosphorescence with dose.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6712519
• Report Number(s): BNL-48506; CONF-911106-101; ON: DE93009350
• Resource Relation: Conference: 1991 Institute of Electrical and Electronic Engineers (IEEE) nuclear science symposium and medical imaging conference, Santa Fe, NM (United States), 2-9 Nov 1991
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
36 MATERIALS SCIENCE
BARIUM FLUORIDES
PHYSICAL RADIATION EFFECTS
CRYSTALS
LIGHT TRANSMISSION
PHOSPHORESCENCE
SCINTILLATION COUNTERS
SUPERCONDUCTING SUPER COLLIDER
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LUMINESCENCE
MEASURING INSTRUMENTS
RADIATION DETECTORS
RADIATION EFFECTS
STORAGE RINGS
440104* - Radiation Instrumentation- High Energy Physics Instrumentation
360605 - Materials- Radiation Effects