Energy response of GR-200A thermoluminescence dosemeters to 60Co and to monoenergetic synchrotron radiation in the energy range 28-40 keV.
Radiat Prot Dosimetry
; 168(1): 40-5, 2016 Jan.
Article
en En
| MEDLINE
| ID: mdl-25737582
ABSTRACT
The response of LiFMg,Cu,P thermoluminescence dosemeters (type GR-200A) to monoenergetic radiation of energy 28, 35, 38 and 40 keV was evaluated with respect to irradiation with a calibrated (60)Co gamma-ray source. High-precision measurements of the relative air kerma response performed at the SYRMEP beamline of the ELETTRA synchrotron radiation facility (Trieste, Italy) showed a significant deviation of the average response to low-energy X-rays from that to (60)Co, with an over-response from 6 % (at 28 keV) to 22 % (at 40 keV). These data are not consistent with literature data for these dosemeters, where model predictions gave deviation from unity of the relative air kerma response of about 10 %. The authors conclude for the need of additional determinations of the low-energy relative response of GR-200A dosemeters, covering a wider range of monoenergetic energies sampled at a fine energy step, as planned in future experiments by their group at the ELETTRA facility.
Texto completo:
1
Colección:
01-internacional
Asunto principal:
Dosimetría Termoluminiscente
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Sincrotrones
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Radiat Prot Dosimetry
Año:
2016
Tipo del documento:
Article
País de afiliación:
Italia