title: Search for ionisation density effects in the radiation absorption stage in LiF:Mg,Ti.
abstract: Optical absorption (OA) dose-response of LiF:Mg,Ti (TLD-100) is studied as a function of electron energy (ionisation density) and irradiation dose. Contrary to the situation in thermoluminescence dose-response where the supralinearity is strongly energy-dependent, no dependence of the OA dose filling constants on energy is observed. This result is interpreted as indicating a lack of competitive process in the radiation absorption stage. The lack of an energy dependence of the dose filling constant also suggests that the charge carrier migration distances are sufficiently large to smear out the differences in the non-uniform distribution of ionisation events created by the impinging gamma/electron radiation of various energies.
authors.affiliation: Physics Department, Ben Gurion University of the Negev, Beersheva 84105, Israel.
authors.forename: I
authors.initials: I
authors.lastname: Nail
authors.forename: Y S
authors.initials: YS
authors.lastname: Horowitz
authors.forename: L
authors.initials: L
authors.lastname: Oster
authors.forename: M E
authors.initials: ME
authors.lastname: Brandan
authors.forename: M
authors.initials: M
authors.lastname: Rodríguez-Villafuerte
authors.forename: A E
authors.initials: AE
authors.lastname: Buenfil
authors.forename: C
authors.initials: C
authors.lastname: Ruiz-Trejo
authors.forename: I
authors.initials: I
authors.lastname: Gamboa-Debuen
authors.forename: O
authors.initials: O
authors.lastname: Avila
authors.forename: V M
authors.initials: VM
authors.lastname: Tovar
authors.forename: P
authors.initials: P
authors.lastname: Olko
authors.forename: N
authors.initials: N
authors.lastname: Ipe
mesh_terms: D003198:Computer Simulation; D004307:Dose-Response Relationship, Radiation; D005459:Fluorides / Q000737:chemistry* / Q000528:radiation effects*; D018499:Linear Energy Transfer; D018020:Lithium Compounds / Q000737:chemistry* / Q000528:radiation effects*; D008274:Magnesium / Q000737:chemistry / Q000528:radiation effects; D008422:Materials Testing; D008956:Models, Chemical; D011829:Radiation Dosage; D011839:Radiation, Ionizing; D013819:Thermoluminescent Dosimetry / Q000379:methods*; D014025:Titanium / Q000737:chemistry / Q000528:radiation effects
chemical_list: D018020:Lithium Compounds; C027651:lithium fluoride; D014025:Titanium; D008274:Magnesium; D005459:Fluorides