The Role of F Centers In The Thermoluminescence of Lithium Fluoride

Alpha particle and proton relative thermoluminescence efficiencies in LiF:Mg,Cu,P:is track structure theory up to the task?

“…Since the minimum electron energy required to displace a light ion is between 0.1 and 0.2 MeV (40) , the measurement of f(D) with low-energy photons excludes the possibility of the creation of displacements and additional F centres and is another valid reason for the exclusive use of low photon/electron energies to generate f (D) in order to determine the role of creation of defects by the HCPs. A proposed role of F centres in the TL mechanism of LiF:Mg,Ti has been discussed both as participators (42) and competitors (43) to the luminescence recombination mechanism and has also been suggested in LiF:MCP (5) . The extent of the validity of the basic assumption of TST as applied to LiF:Mg,Ti has been recently questioned.…”

Conduction band/valence band kinetic modeling of the LiF:Mg,Ti system incorporating creation of defects in the irradiation stage

“…1. A proposed role of F centers in the TL of LiF:Mg,Ti has been discussed both as participators/ enhancers [23] and competitors [24] to the luminescence recombination mechanism. In the model proposed by Mayhugh [23] for LiF:Mg,Ti, the thermally liberated F center electrons recombine with holes at V 3 centers, transform to unstable Vk centers which release holes which then recombine with electrons at activator sites (e.g., Ti(OH) n centers).…”