Actinium-228 in Natural Background Gamma Radiation Spectrum

1986 ◽  
Vol 23 (8) ◽  
pp. 740-744 ◽  
Author(s):  
Shetha Selman Al-DARGAZELLI ◽  
Nejla'a Salih Al-ALI
Keyword(s):  
Gamma Radiation ◽  
Radiation Spectrum ◽  
Natural Background ◽  
Background Gamma Radiation

CAR-BORNE SURVEY OF NATURAL BACKGROUND GAMMA RADIATION IN WESTERN, EASTERN AND SOUTHERN THAILAND

2019 ◽  
Vol 188 (2) ◽  
pp. 174-180
Author(s):  
Chutima Kranrod ◽  
Supitcha Chanyotha ◽  
Phongphaegh Pengvanich ◽  
Rawiwan Kritsananuwat ◽  
Thamaborn Ploykrathok ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Dose Rate ◽  
Pulse Height ◽  
Absorbed Dose ◽  
Height Distribution ◽  
Natural Background ◽  
Large Area ◽  
Absorbed Dose Rate ◽  
Pulse Height Distribution ◽  
Background Gamma Radiation

Abstract Natural background gamma radiation was measured along the main roads in the eastern, western and southern regions of Thailand using a car-borne survey system with a 3-in × 3-in NaI (Tl) scintillation spectrometer. The system was able to quickly survey a large area and obtain outdoor absorbed dose rate in air from a gamma ray pulse height distribution. A total of 19 219 data of the outdoor absorbed dose rate in air were collected. The average outdoor absorbed dose rate in air in the eastern, western and southern regions were found to be 8–127, 16–119 and 16–141 nGy h -1 , respectively. The highest outdoor absorbed dose rate in air was detected in the southern region of Thailand. The corresponding average outdoor annual effective dose to the public ranged from 11.7 to 80.8 μSv.

Natural background gamma radiation levels in dwellings constructed under the Double Bedroom Housing Scheme at Erravalli and Narasannapet model villages of Telangana state, India

2019 ◽  
Vol 29 (7) ◽  
pp. 1038-1044 ◽  
Author(s):  
K Vinay Kumar Reddy ◽  
B Sreenivasa Reddy ◽  
B Linga Reddy
Keyword(s):  
Gamma Radiation ◽  
State Government ◽  
Building Materials ◽  
Background Radiation ◽  
Natural Background ◽  
Different Types ◽  
Housing Scheme ◽  
Background Gamma Radiation ◽  
Telangana State ◽  
Effects Of Radiation

Quantification of natural background gamma radiation levels in indoors has attracted mounting interest for the past few decades due to the detrimental effects of radiation. The indoor radiation levels depend on many parameters like geology, building materials, temperature, ventilation, etc. The natural background gamma radiation levels were estimated using a μR-Survey Meter in indoors and outdoors of dwellings constructed under the Double Bedroom Housing Scheme of Telangana state government at Erravalli and Narasannapet model villages. The average gamma radiation levels in the Erravalli village was found to be 2873 ± 413 μGyy−1, while in Narasannapet village it was 2621 ± 355 μGyy−1, which are relatively high as compared to the national average 775 ± 370 μGyy−1. The indoor to outdoor ratio of natural background radiation levels varied from 0.74 to 1.52 with an average of 1.08 which is in the global range. The variation of these levels with different types of dwellings has also been discussed.

scholarly journals Outdoor and indoor natural background gamma radiation across Kerala, India

2022 ◽  
Author(s):  
John Richard Thomas ◽  
M. Vishnu Sreejith ◽  
Usha K. Aravind ◽  
S. K. Sahu ◽  
P. G. Shetty ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Radiation Dosage ◽  
Background Radiation ◽  
Indoor Environments ◽  
Natural Background ◽  
World Average ◽  
Sampling Locations ◽  
The World ◽  
Background Gamma Radiation

The average annual outdoor background radiation dosage across the study area was ∼two times greater than the world average. Higher radiation dosage was observed in indoor environments than outdoors in the majority of the sampling locations.

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