By L. Boetter-Jensen, S.W.S. McKeever, A.G. Wintle
Optically influenced Luminescence (OSL) has develop into the means of selection for lots of components of radiation dosimetry. The process is discovering common software in a number of radiation dosimetry fields, together with own tracking, environmental tracking, retrospective dosimetry (including geological courting and twist of fate dosimetry), area dosimetry, and lots of extra. during this publication we now have tried to synthesize the main advances within the box, masking either basic knowing and the numerous functions. The latter serve to illustrate the luck and recognition of OSL as a dosimetry method.The e-book is designed for researchers and radiation dosimetry practitioners alike. It delves into the certain thought of the method from the perspective of motivated leisure phenomena, describing the power garage and unencumber methods phenomenologically and constructing specific mathematical descriptions to allow a quantitative realizing of the saw phenomena. many of the stimulation modes (continuous wave, pulsed, or linear modulation) are brought and in comparison. The homes of crucial man made OSL fabrics starting with the dominant carbon-doped Al2O3, and relocating via discussions of different, less-well studied yet however very important, or in all probability vital, fabrics. The OSL homes of the 2 most vital common OSL dosimetry fabric kinds, specifically quartz and feldspars are mentioned intensive. The purposes chapters care for using OSL in own, environmental, clinical and UV dosimetry, geological relationship and retrospective dosimetry (accident dosimetry and dating). eventually the advancements in instrumentation that experience happened over the last decade or extra are defined. The ebook will locate use in these laboratories inside of academia, nationwide institutes and the personal area the place learn and purposes in radiation dosimetry utilizing luminescence are being carried out. power readers contain team of workers curious about radiation safeguard perform and examine, hospitals, nuclear energy stations, radiation clean-up and remediation, foodstuff irradiation and fabrics processing, safeguard tracking, geological and archaeological relationship, luminescence reviews of minerals, and so forth.
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Extra info for Optically Stimulated Luminescence Dosimetry
Example text
3 can be important. 05 eV induces an electron transition from the 1A ground state to the 2P excited state of the F-centre. Since the 2P state is accessible to the conduction band, ionisation of the electron can occur, leading to trapping and, subsequently, TL and/or OSL (Summers, 1984). Intraband transitions of type 5 are important in certain optically stimulated processes involved in the dosimetry of natural materials. For example, absorption of an IR photon (at approximately 840nm) induces a ground-state-to-excited-state transition in a radiation-induced defect in feldspar minerals.
Radiat. Prot. Dosim. 55, 183-190. , 1994. Some features of oL-A1203:Cdosimetric thermoluminescent crystals. Radiat. Prot. Dosim. 55, 279-283. , 1995. Time-resolved optically stimulated luminescence from aA1203:C. Radiat. Meas. 24, 457-463. ), 1997. Proceedings of the Eighth International Conference on Luminescence and ESR Dating Conference, Canberra (1996). Radiat. Meas. 27, 75-443. , 1998. Optically stimulated luminescence dosimetry. SPIE 3534, 531-541. S. ), 2000. Proceedings of the Ninth International Conference on Luminescence and ESR Dating Conference, Rome (1999).
7 eV, the excitation of OSL from quartz can be interpreted as primarily coming from a single type of trap. In contrast, Fig. 7 illustrates an entirely different excitation spectrum shape, from Amelia albite. 5 eV. 4 eV is consistent with the model of Hiitt et al. J O9 0 ~2 o o > ~ o 0,1 - -o E 0 o o o rD. 0,01 - /-3 2,0 i i i i i i i i i 2,2 2,4 2,6 2,8 3,0 3,2 3,4 3,6 3,8 4,0 Stimulation e n e r g y ( e V ) Fig. 5. Normalised PC and OSL stimulation spectra for irradiated (300 Gy) A1203:C single crystals.
