IAEA-International Atomic Energy Agency, Guidelines for Radioelement Mapping Using Gamma Ray Spectrometry
To determine the activity concentration of Ra226, Th232 and K40 and to assess their radiological hazards analysis on the collected samples were carried out by using gamma ray spectrometry
consisting ofhigh purity germanium (HPGe) detector.
The specific activities of radionuclides (226Ra 232Th and 40K) investigated in the soil samples of Peshawar University area were determined using gamma ray spectrometry
. The specific activities of radionuclides reported in Bq/kg (dry weight basis) are given in Table-1.
2005.[sup.226]Ra, [sup.232]Th and [sup.40]K analysis in soil samples from some areas of Punjab and Himachal Pradesh, India using gamma ray spectrometry
. Radiation Measurements, 39: 431-439.
Airborne geophysical data especially gamma ray spectrometry
are utilized to identify uranium targets .
A well established alteration-mineralization potassic zoning sequence may be evident within a single deposit, ranging from a central, orthoclase and/or biotite core, sericite as fracture-controlled and pervasive replacements, outwards through successive phyllic, sericitic, argillic and propylitic areas Although phyllic areas may contain less bulk potassium gain than potassic cores, their peripheral distribution usually offers much larger targets for gamma ray spectrometry detection A number of potassium anomalies are directly associated with intermediate intrusive bodies and their associated alteration systems within porphyry copper belts.
Gamma ray spectrometry has been useful in determining the anomalous potassium, uranium and thorium concentration interpreted as alteration halos and linear discontinuities, associated with intermediate intrusive / extrusive rocks (Dickson and Scott, 1997).
International Atomic Energy Agency, 2003, Guidelines for radioelement mapping using gamma ray spectrometry
data: International Atomic Energy Agency, TECDOC-1363, 173 p.
In order to homogenize the sample and to get a well-defined geometry for gamma ray spectrometry
, the samples are ground to a grain size of about 1-3mm, and then weighed .