[en] There is continuing interest in the possible use of LiF:Mg,Ti (TLD-100) thermoluminescent detectors in mixed-field neutron-gamma ray dosimetry, and as ionization density discriminators (average linear-energy-transfer (LET) estimators) in various heavy charged particle and neutron-gamma radiation fields in space and air-craft dosimetry, heavy ion medical radiation dosimetry and other applications.. In this work we are studying the dependence of the shape of composite glow peak 5 and the high temperature thermoluminescence (HTTL) in the glow curve of TLD-100 on ionization density . The shape of composite glow peak 5 (specifically the ratio of peak 5a/5) has been suggested as an ionization-density dependent nanodosimeter due to the localized nature of the electron-hole recombination giving rise to peak 5a and various authors have promoted the use of the HTTL as an estimator of average LET in space radiation fields due to the enhanced relative intensity of the HTTL at high ionization density