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A Portable system installed with a mini X-ray generator for red/blue TL and OSL measurements

Hashimoto, Tetsuo*; Takeuchi, Fumiyuki*; Fujita, Hiroki

A portable system was designed for red/blue thermoluminescence (TL) and optically stimulated luminescence (OSL). Its main components consist of a mini X-ray source, a small photomultiplier (PMT). a precision rotation wheel for loading 8-samples, a heater assembly made from ceramics heater, and light emitting diode array. The unit was framed to a square box with a bow part which is available for sample-pan change. A lid-cover is tightened by a hinge arrangement in order to prevent a permeation of light from the exterior and evacuate chamber which may be filled with an inert gas if necessary. For the new system, RTL-measurement was satisfactorily performed with high sensitivity in spite of a little bit higher background due to lack of cooling power down to 0$$^{circ}$$C even in the field experiment. However, the X-rays with relatively low energy, such as several keV, brought on the different dose-response behavior dependent on the quartz grain-diameter.

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