Modelling quartz luminescence signal dynamics relevant for dating and dosimetry

石英的热激发光（TL）和光激发光（OSL）都是考古学和地球科学中重要的测年技术。为了获得可靠和精确的测年结果，对晶格中电荷转移的复杂过程有深刻的理解是必不可少的。最近的动力学石英发光模型通过模拟不同情景（如沉积历史、实验室测量条件）下的石英发光行为，极大地促进了现有理论与实验观测的适应。尽管各种各样的现有石英模型似乎部分成功地模拟了现实的TL和OSL信号，但石英放射荧光（RF，电离辐照期间发出的发光）行为与模型预测有很大不同。该项目旨在进一步发展和改进“传统”动力学和随机（“蒙特卡罗”）模型，使其成为一个综合和更全面的模型，能够再现更广泛的观测到的发光现象(例如，射频信号动力学、峰值发射波长随测量温度的变化)，以及反映不同地质或地理来源和不同沉积历史的石英样品所观察到的不同发光行为的范围。

Both thermally stimulated (TL) and optically stimulated luminescence (OSL) of quartz are important dating techniques in archaeology and Earth-Sciences. For obtaining reliable and precise dating results, a profound understanding of the complex processes of charge transfer in the crystal lattice is essential. Recent kinetic quartz luminescence models significantly contribute to adapting existing theories to experimental observations, by simulating quartz luminescence behaviour for different scenarios (e.g., sedimentary history, laboratory measurement conditions). Although the variety of diverse existing quartz models partially appear to succeed in simulating realistic TL and OSL signals, quartz radiofluorescence (RF, luminescence emitted during ionizing irradiation) behaviour differs substantially from model predictions. This project aims at further developing and improving "traditional" kinetic as well as stochastic ("Monte Carlo") models towards an integrated and more comprehensive model capable of reproducing a much wider range of observed luminescence phenomena (e.g., RF signal dynamics, change in peak emission wavelength with measurement temperature) as well as reflecting the range of different luminescence behaviour observed among quartz samples from different geological or geographical origin and with various sedimentary history.