Performance of a passive electret dosimeter for Rn progeny
Khan, A; Phillips, CR
| HERO ID | 21360 |
|---|---|
| In Press | No |
| Year | 1985 |
| Title | Performance of a passive electret dosimeter for Rn progeny |
| Authors | Khan, A; Phillips, CR |
| Journal | Health Physics |
| Volume | 49 |
| Issue | 5 |
| Page Numbers | 986-991 |
| Abstract | The performance of a passive electret dosimeter in measuring radon (10043922) progeny in the laboratory and in a uranium (7440611) mine was evaluated. The dosimeter head was modified to suit the requirements for aerosol collection by electrostatic diffusion. The 6 millimeter gap between the collimators and the collecting surface in the dosimeter was preserved by replacing the filter in the dosimeter by the electret. The dosimeter was exposed inside a wind tunnel in a radon chamber at about 4 working stages for 2 hours. The electret dosimeter design was then adopted for a 1 week test in a uranium mine. The uranium mine used for testing was diesel operated and contained aerosols at concentrations in the range of 200,000 to 300,000 per cubic meter. Miners wore the passive dosimeter in addition to the reference dosimeter in the mines while working for 3 or 4 day periods. Passive dosimeter data was somewhat lower than that obtained from the reference dosimeters. The passive dosimeters were rugged enough for use in the mine atmosphere and no part of the electret dosimeters suffered any physical damage in the mine tests. The authors conclude that the high aerosol concentrations may have contributed to the efficiency of the dosimeter by a factor of 3 to 4 below what would have been expected based on preliminary laboratory work at lower aerosol concentrations. |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Health Phys. 49: 986-991. |
| Is Public | Yes |
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| Is Qa | No |