TY - JOUR
T1 - Photon energy response of LiF:Mg,Ti (MTS) and LiF:Mg,Cu,P (MCP) thermoluminescent detectors: Experimental measurements and microdosimetric modeling
AU - Parisi, Alessio
AU - Dabin, Jérémie
AU - Schoonjans, Werner
AU - Van Hoey, Olivier
AU - Mégret, Patrice
AU - Vanhavere, Filip
N1 - Score=10
PY - 2019/5/14
Y1 - 2019/5/14
N2 - The photon energy response of six thermoluminescent detector types (6LiF:Mg,Ti, 7LiF:Mg,Ti, natLiF:Mg,Ti, 6LiF:Mg,Cu,P, 7LiF:Mg,Cu,P and natLiF:Mg,Cu,P) was studied in the energy range 12–1250 keV by means of
irradiations with different γ-ray sources and X-rays. As expected, for both LiF:Mg,Ti and LiF:Mg,Cu,P detectors, no significant differences were found between the results of detectors with same dopant concentrations but
different lithium isotopic enrichment. On the other hand, the type and concentration of dopants influence the photon energy response of the detectors up to 50%. The obtained results were compared with experimental data
from literature showing good agreement. In addition, the recently developed Microdosimetric d(z) Model was employed to assess the photon response of these detectors. For microdosimetric calculations performed in the
optimal site size of 40 nm (determined in previous investigations with charged particles), a very good agreement was observed between results of the model and the experimental data with an average relative deviation of 3%
and 4% for LiF:Mg,Ti and LiF:Mg,Cu,P detectors respectively.
AB - The photon energy response of six thermoluminescent detector types (6LiF:Mg,Ti, 7LiF:Mg,Ti, natLiF:Mg,Ti, 6LiF:Mg,Cu,P, 7LiF:Mg,Cu,P and natLiF:Mg,Cu,P) was studied in the energy range 12–1250 keV by means of
irradiations with different γ-ray sources and X-rays. As expected, for both LiF:Mg,Ti and LiF:Mg,Cu,P detectors, no significant differences were found between the results of detectors with same dopant concentrations but
different lithium isotopic enrichment. On the other hand, the type and concentration of dopants influence the photon energy response of the detectors up to 50%. The obtained results were compared with experimental data
from literature showing good agreement. In addition, the recently developed Microdosimetric d(z) Model was employed to assess the photon response of these detectors. For microdosimetric calculations performed in the
optimal site size of 40 nm (determined in previous investigations with charged particles), a very good agreement was observed between results of the model and the experimental data with an average relative deviation of 3%
and 4% for LiF:Mg,Ti and LiF:Mg,Cu,P detectors respectively.
KW - Thermoluminescent detectors
KW - Photon energy response
KW - Microdosimetric d(z) model
KW - PHITS
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/34635105
U2 - 10.1016/j.radphyschem.2019.05.021
DO - 10.1016/j.radphyschem.2019.05.021
M3 - Article
VL - 163
SP - 67
EP - 73
JO - Radiation Physics and Chemistry
JF - Radiation Physics and Chemistry
SN - 0969-806X
ER -