EPR/alanine pellets with low Gd content for neutron dosimetry.
Radiat Prot Dosimetry
; 161(1-4): 383-6, 2014 Oct.
Article
in En
| MEDLINE
| ID: mdl-24262924
ABSTRACT
This paper reports on results obtained by electron paramagnetic resonance (EPR) measurements and Monte Carlo (MC) simulation on a blend of alanine added with low content of gadolinium oxide (5 % by weight) to improve the sensitivity to thermal neutron without excessively affecting tissue equivalence. The sensitivity is enhanced by this doping procedure of more an order of magnitude. The results are compared with those obtained with the addition of boric acid (50 % by weight) where boron is in its natural isotopic composition in order to produce low-cost EPR dosemeters. The gadolinium addition influences neutron sensitivity more than the boron addition. The presence of additives does not substantially change the fading of the EPR signal induced by neutrons. The MC simulations agree the experimental results in case of gadolinium addition.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Radiometry
/
Electron Spin Resonance Spectroscopy
/
Alanine
/
Gadolinium
/
Neutrons
Type of study:
Health_economic_evaluation
Language:
En
Journal:
Radiat Prot Dosimetry
Year:
2014
Document type:
Article
Affiliation country:
Italy