Nanocrystalline BaSO{sub 4}:Eu For Dosimetry of Proton Beams

Journal Article · Fri Jul 15 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3605923· OSTI ID:21608152

Bahl, Shaila; Kumar, Pratik ^[1]; Lochab, S P ^[2]; Pandey, Anant ^[3]; Aleynikov, V E; Molokanov, A ^[4]

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1. Medical Physics Unit, IRCH, AIIMS, New Delhi-110029 (India)
2. Inter-University Accelerator Center, Aruna Asaf Ali Marg, New Delhi - 110067 (India)
3. Department of Physics, Sri Venkateswara College, New Delhi-110021 (India)
4. Joint Institute for Nuclear Research, Dubna - 141980 (Russian Federation)

Nanocrystalline BaSO{sub 4} doped with Eu, was prepared by the Chemical Co-precipitation method. The particle size was calculated by the broadening of the XRD peaks using Scherrer's formula with particle size around 45 nm. Samples in the form of pellets were irradiated by 150 MeV proton beam with dose range of 0.1 Gy to 325 Gy. Thermoluminescence (TL) glow curves of the irradiated samples were recorded and studied. It has been found that there are two prominent TL glow peaks at 460 K and 495 K. The TL response is sublinear below 1 Gy, linear in the range 1 Gy to 200 Gy and then becomes supralinear for higher doses. The wider linear TL response of nanocrystalline BaSO{sub 4}:Eu and low fading makes it a superior candidate as a dosimeter to be used for detecting the doses of protons for its various applications in the field of space, therapy and research.

• OSTI ID: 21608152
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1349; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
77 NANOSCIENCE AND NANOTECHNOLOGY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM SULFATES
BEAMS
COHERENT SCATTERING
COPRECIPITATION
CRYSTALS
DIFFRACTION
DOPED MATERIALS
DOSEMETERS
DOSIMETRY
EMISSION
ENERGY RANGE
GLOW CURVE
LUMINESCENCE
LUMINESCENT DOSEMETERS
MATERIALS
MEASURING INSTRUMENTS
MEV RANGE
NANOSTRUCTURES
NUCLEON BEAMS
OXYGEN COMPOUNDS
PARTICLE BEAMS
PARTICLE SIZE
PHOTON EMISSION
PRECIPITATION
PROTON BEAMS
SCATTERING
SEPARATION PROCESSES
SIZE
SULFATES
SULFUR COMPOUNDS
THERMOLUMINESCENCE
THERMOLUMINESCENT DOSEMETERS
THERMOLUMINESCENT DOSIMETRY
X-RAY DIFFRACTION