Recent instrumental developments for trapped electron dosimetry

We review our continuing investigation and development of new facilities for irradiation, optical stimulation and luminescence signal detection. These facilities are aimed for use in luminescence-based retrospective dosimetry, and in investigations of luminescence processes. We describe progress in (i) the development, testing and documentation of mini X-ray generators as an alternative to 90Sr/90Y beta sources, (ii) the development of a pulsed-OSL unit as an attachment to the Risø TL/OSL reader, which has made it possible to achieve real-time separation of the quartz signal from a mixed sample, (iii) the measurement of red emission TL from natural samples for increasing the age range, (iv) the design of a compact portable OSL reader for direct dose measurements in the field and finally (v) fitting an electron detector to a Risø reader for measuring both thermally and optically stimulated exo-electrons to give insight into luminescence processes.