LiF: Mg, Ti (TLD-600/700) 第4ピークの不安定性: γ線照射とFeイオン照線の比較

抄録

Instability of peak 4 in LiF: Mg, Ti (TLD-600/700) was experimentally examined by comparing the glow curves obtained for ¹³⁷Cs γ-rays and Fe-ion beam. After post-annealing at 100°C×30min, thermoluminescence (TL) intensity around peak 4 notably decreased only for γ-ray irradiation. In Fe-ion irradiated samples, post-annealing effects were scarcely observed in the TL intensities in the peak-4 region. These results suggest that the peak-4 luminescent centers are unstable and more vulnerable than other peaks to highly-dense ionization.