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Determination of Natural Radioactivity from ^{232}Th with Gamma-Ray Spectrometer in Dereköy-Yazır (Southwestern Anatolia)

100%
Uyanik N., Öncü Z., Uyanik O., Akkurt İ.
Acta Physica Polonica A
|
2015
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vol. 128
|
issue 2B
B-441-B-442
EN
This study presents new data on the baseline concentrations of Thorium over the Dereköy-Yazır (Ağlasun-Burdur) volcanic area. Portable gamma-ray spectrometer was used for natural thorium mapping. In situ measurements were made in the field, in the area of 7.5 km² at 165 points. Variations in the Th concentration in the surficial environment of the Dereköy-Yazır region appear to be related to bedrock lithology. The measured thorium concentration varies between 0.68-36 ppm, in the studied area. The highest concentration values were obtained from volcanic rocks. The outcropping volcanic rocks in the region are Pliocene alkaline basalts.
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Distribution of Natural Radioactivity from ^{40}K Radioelement in Volcanics of Sandıklı-Şuhut (Afyon) Area

76%
Uyanik N., Öncü Z., Uyanik O., Bozcu M., Akkurt İ., Günoğlu K., Yağmurlu F.
Acta Physica Polonica A
|
2015
|
vol. 128
|
issue 2B
B-438-B-440
EN
Many radioactive elements have existed when the Earth had appeared and the long living of them are still present. One of the most important of these radioactive elements is ^{40}K. It makes about 0.012% of total content of K, widely represented in many different rocks. In this study the distribution of the natural ^{40}K radioelement in the volcanics of the south part of Afyon was investigated. Gamma-ray spectrometer was used for in-situ measurements of this radioelement concentration. Studied area has covered approximately 1800 km². In-situ measurements were performed at 1390 different locations in this field. Data for each measurement was gathered during 3 min. The map of the ^{40}K element distribution in the studied area was produced. The high values of ^{40}K, according to this map, were obtained in the areas of the alteration zones, between Sandıklı and Şuhut in the studied area.
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