Equivalent Radiation Doses in Area of North Jordan
- Nabil Al-zubaidy
- Adullah Mohammad
In this research the authors measured radon gas concentration inside Hakama homes and calculated equivalent radiation doses in the study area. The study started from 1 June 2011 to 1 September 2011. Study area was divided into four sectors (H East, H West, H North and H South). About 200 dosimeters containing highly pure CR-39 were distributed randomly among the houses of the different sectors. Two dosimeters were distributed in each house (first in the living room and the second in the guest room). The indoor dosimeters were collected after three months. The collected detectors were chemically etched using 30 % KOH for 8 hours at 70 °C. An optical microscope was used to measure the nuclear alpha track density on the detectors surfaces.
The author found that the average radon concentration in the study area was ranged from 30.2 Bq/m3 in the sector H East to 25.7 Bq/m3 in the sector H South. Moreover; the average radon concentration in the living rooms in the study area was 18.8 Bq/m3 which is below that in the guest rooms 37 Bq/m3.
Radon contributes in increasing of absorption radiation dose. The calculated equivalent radiation dose in the study area was 0.68. The average radon concentration in the study area was below the Jordanian national level.
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