| Autor: |
Surinder Singh, Name Singh, Manwinder Singh, Hardev Singh Virk |
| Rok vydání: |
1986 |
| Předmět: |
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| Zdroj: |
Scopus-Elsevier |
| ISSN: |
1359-0189 |
| DOI: |
10.1016/1359-0189(86)90726-0 |
| Popis: |
The relation given by Coppens (1977) between the concentrations of Uranium (U) and Thorium (Th) in geological samples and corresponding alpha track rate employing nuclear emulsions is: 10 6 N = (9.20U + 2.80Th) k The modified formula for use in LR-115 type 2 plastic track detector is proposed as under: 10 6 N = (6.77U + 1.60Th) k Uranium is estimated using fission track technique and Th is calculated by alpha autoradiography. The absorption coefficient (k) is determined from the composition of the sample under study. The proposed formula is applied for Th analysis in phosphorite samples from Mussourie Syncline, U.P. (India). Gamma ray spectrometric analysis of phosphorite samples establish the validity of the modified relation for U and Th estimation. The quartizite samples collected from Kulu area of Himachal Pradesh (India) are analysed using modified relation. The value of absorption coefficient k is found to be 14.29 for quartzite rock. U and Th contents are found to vary from 2.63 to 18.73 ppm and 0.92 to 95.92 ppm, respectively. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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