Effect of variable doses of ultraviolet radiation (253. 7 nm) on thermoluminescence NaCl:Ca(T) material

Journal Article · Mon Mar 31 23:00:00 EST 1986 · Health Phys.; (United States)

DOI:https://doi.org/10.1097/00004032-198604000-00005· OSTI ID:5624847

Nehate, A K; Joshi, T R; Kathuria, S P; Joshi, R V

This paper studies the thermoluminescence (TL) glow curves of NaCl:Ca(T) phosphors to various doses of 253.7-nm ultraviolet (UV) radiation at room temperature. TLD grade NaCl:Ca(T) material was obtained by crystallization from solution and was subsequently annealed at 750 degrees C for 2 h, followed by sudden quenching. We undertook measurement of the effect of variable UV radiation doses (10(2) to 10(6) J m-2) on the TL behaviour of NaCl:Ca(T) phosphors. It was observed that the phosphor exhibits a dominant peak around 167 degrees C along with a weak peak at lower temperature. The high-temperature peak (Peak II) is found to grow linearly with the increase in UV dose in the range of 10(2) to 10(6) J m-2. Since the nature of the glow curves under the influence of different doses remains more or less identical, it is believed that the phosphor does not undergo radiation damage and displays high intrinsic TL around Peak II. Examination of the system for fundamental dosimetry requirements shows that it can be used in dosimetry work at 253.7 nm.

• Research Organization: Univ. of Baroda, India
• OSTI ID: 5624847
• Journal Information: Health Phys.; (United States), Journal Name: Health Phys.; (United States) Vol. 4; ISSN HLTPA
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CHEMICAL RADIATION EFFECTS
CHEMISTRY
DAMAGE
DOSEMETERS
DOSIMETRY
ELECTROMAGNETIC RADIATION
GLOW CURVE
LUMINESCENT DOSEMETERS
MEASURING INSTRUMENTS
PHOSPHORS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
THERMOLUMINESCENT DOSEMETERS
THERMOLUMINESCENT DOSIMETRY
ULTRAVIOLET RADIATION