| Titre | Improved 220Rn measurement characteristics of scintillation cells cooled to liquid nitrogen temperatures |
| Télécharger | Téléchargements |
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| Licence | Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures. |
| Auteur | Bigu, J |
| Source | Centre canadien de la technologie des minéraux et de l'énergie, Laboratoires de recherche minière, Rapport divisionnaire MRL 93-061 (J), 1993, 17p., https://doi.org/10.4095/328834  Accès ouvert |
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| Année | 1993 |
| Document | publication en série |
| Lang. | anglais |
| DOI | https://doi.org/10.4095/328834 |
| Media | papier; numérique; en ligne |
| Formats | pdf |
| Sujets | radioisotopes; radioactivité; radionucléïdes; radon; temperature; uranium; thorium; essais de minerai; Sciences et technologie; minéraux radioactifs |
| Illustrations | diagrammes schématiques; séries chronologiques |
| Diffusé | 1993 04 01; 2021 08 20 |
| Résumé | (disponible en anglais seulement)
The 220Rn alpha-particle counting characteristics of a ZnS(Ag) scintillation cell cooled to liquid nitrogen (LN2) temperatures have been investigated. The cell
was designed to serve a dual purpose, namely, to operate as a cold trap (when cooled at LN2) to condense 220Rn flowing through a counting system of the flow through type, and as an efficient alpha-particle detector. An improvement in the counting
rate of 50% to ~100% has been observed when compared with a similar system operating at room temperature. It is possible to improve the characteristics of the system significantly by careful redesign of the geometry of the scintillation cell, i.e.,
by machining the cell in a semi-spherical shape, and reducing its physical dimensions to equal or less than the range of the alpha-particles from the decay of 220Rn. |
| GEOSCAN ID | 328834 |
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