Autoradiographic Observation of Al-, Mn-, and Na-distributions on Rock Slice Using Neutron-Induced Radionuclides and Preferential Utilization of Imaging Plate as Its Alternative Detector
| Autor: | Shuei Sakaue, Hiroto Ohira, Tetsuo Hashimoto |
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| Rok vydání: | 1992 |
| Předmět: | |
| Zdroj: | RADIOISOTOPES. 41:618-626 |
| ISSN: | 1884-4111 0033-8303 |
| DOI: | 10.3769/radioisotopes.41.12_618 |
| Popis: | Autoradiographic observations using a photographic film on a granite rock slice have been established for two-dimensional distribution of elements, Al, Mn, and Na, which produce relatively short-lived radionuclides after pure thermal neutron irradiation. In the case of aluminium detection, it was suggested from semi-empirical estimation that an obstacle reaction of 28Si (n, p) 28Al with fast neutrons significantly overcomes the objective 28Al-activity from the neutron capture reaction of aluminium, in addition to the contribution of after-glow phenomena with reactor exposure to sensitize the photographic film. As a result, the fine textures of aluminium pattern among mineral constituents could be conveniently recognized as well as in the case of manganese distribution.Subsequently, the imaging plate based on photo-stimulated luminescence phenomena has proven to be preferentially employed for the quantitative treatments of imaging patterns due to neutron-induced radionuclides. The advantageous points of the imaging plate, involving ultra-high sensitivity and acquisition of quantitative information, are discussed in comparison with the traditional photographic technique. |
| Databáze: | OpenAIRE |
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