Manganese activation of CaSO sub 4 :Dy

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Health Physics; (USA)

DOI:https://doi.org/10.1097/00004032-199001000-00008· OSTI ID:6985051

Li, S H; Hsu, P C ^[1]

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1. National Tsing Hua Univ., Taiwan (China)

The influence of Mn activation on CaSO{sub 4}:Dy thermoluminescent (TL) phosphor has been observed to study the basic TL characteristics such as TL output, fading, sensitivity, and dose response. The experimental results indicate that the TL characteristics are strongly influenced by the concentration of Mn dopant in CaSO{sub 4}:Dy, especially for the low temperature trapping peak of the glow curves. The TL properties of CaSO{sub 4}:Dy:Mn phosphor with a concentration ratio of 1:4 of Dy to Mn include not only high sensitivity, negligible fading, and linear dose response as compared to the CaSO{sub 4}:Dy phosphor, but also two well-separated peaks and relative peak heights. This suggests that it can be used for accidental dose and elapsed time evaluations as well as for a routine personnel dosimeter. It was also found that 350{degree}C to 400{degree}C for 30 min is the optimum temperature and time in annealing treatment for this phosphor.

• OSTI ID: 6985051
• Journal Information: Health Physics; (USA), Journal Name: Health Physics; (USA) Vol. 58:1; ISSN 0017-9078; ISSN HLTPA
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CHEMICAL REACTIONS
DOSEMETERS
DYSPROSIUM
ELEMENTS
LUMINESCENCE
LUMINESCENT DOSEMETERS
MANGANESE
MEASURING INSTRUMENTS
METALS
OXYGEN COMPOUNDS
PHOSPHORESCENCE
RARE EARTHS
SENSITIVITY ANALYSIS
SULFATES
SULFUR COMPOUNDS
THERMOLUMINESCENT DOSEMETERS
TRANSITION ELEMENTS