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| Content Provider | Springer Nature Link |
|---|---|
| Author | Ogundare, F. O. Oniya, E. O. Balogun, F. A. |
| Copyright Year | 2008 |
| Abstract | In this work the dependence of intrinsic efficiency of a NaI(Tl) detector of radius 3.82 cm and height 7.62 cm on source-detector distance (d), source-off-axis distance (d $_{0}$) and γ-photon energy have been investigated using analytical and Monte Carlo methods. The results showed that, for a given off-axis distance, there exists a value of the ratio of source-detector distance (d) to detector radius (R) where intrinsic efficiency is minimum. This d/R value at which minimum efficiency occurs approaches zero as off-axis distance increases and it is almost constant with increase in energy. In the region where d/R < 0.01, a criteria given by Jehouani et al [1] for good photon detection, intrinsic efficiency decreases with increasing off-axis distance. The implications of the results for radioactivity measurement and radiation protection are discussed. Chacteristics of intrinsic efficiency in the regions d/R < 0.01 and d/R > 10 are also compared. |
| Starting Page | 863 |
| Ending Page | 874 |
| Page Count | 12 |
| File Format | |
| ISSN | 03044289 |
| Journal | Pramana |
| Volume Number | 70 |
| Issue Number | 5 |
| e-ISSN | 09737111 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2008-07-31 |
| Publisher Place | India |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Detections γ-photons analytical formula Monte Carlo intrinsic efficiency Astrophysics Astronomy Physics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy |
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