title: Nonerasing dose readout in lithium fluoride crystals by positron lifetime spectroscopy.
abstract: The measurement of the mean lifetime of the positron (tau) in a lithium fluoride (LiF) chip which had been irradiated with up to 40 Gy from a 60Co gamma-ray source demonstrates a correlation between the positron mean lifetime and the dose which has been delivered to the crystal. This result points out the possibility of performing the readout of gamma-irradiated LiF thermoluminescent dosimeters by positron lifetime spectroscopy without changing the information stored in the chip significantly.
authors.affiliation: IFIMAT, Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Argentina.
authors.forename: A
authors.initials: A
authors.lastname: Somoza
authors.forename: A
authors.initials: A
authors.lastname: Dupasquier
authors.forename: M A
authors.initials: MA
authors.lastname: Chesta
authors.forename: M
authors.initials: M
authors.lastname: Brunetto
authors.forename: R T
authors.initials: RT
authors.lastname: Mainardi
mesh_terms: D004583:Electrons; D005459:Fluorides; D005720:Gamma Rays; D018020:Lithium Compounds; D011874:Radiometry / Q000295:instrumentation*; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D018020:Lithium Compounds; C027651:lithium fluoride; D005459:Fluorides