The results of an intercomparison of in situ gamma-ray spectrometers that was held at
Brookhaven National Laboratory in the fall of 1997 are presented. Six different organizations …

This tutorial is intended for those in the environmental field who perform assessments in
areas where there is radioacfi_, e contamination in the surface soil. Techniques will be …

Dose rates from natural radionuclides and 137Cs in soils of the Oak Ridge area have been
determined from in situ and core sample measurements. In situ gamma-ray measurements …

Spatial variability is an important feature in many environmental studies, which influences
comparison estimates of environmental radioactivity from soil samples and in-situ or …

Determination of gamma-ray activity in soil by in-situ spectrometry with portable high purity
germanium detectors is highly dependent on the nature of the site and the source …

In situ gamma-ray spectrometry offers a rapid method of assessing radioactive
contamination in soil. For accurate quantification, however, a knowledge of the activity-depth …

The algorithm used to calculate a minimum detectable activity (AD) of an environmental
volume sample measured by γ-ray spectrometry was modified and adapted for in situ …

Spatially representative sampling of both natural and anthropogenic deposits in the
environment is limited by their inherent heterogenic distribution. This problem is …

In situ and laboratory gamma spectroscopy were used to characterize natural background
levels of radiation in the soil at eight sites around the Yucca Mountain Range. The purpose …

Evaluations of gamma-ray fluence are made for source geometries that depart from the flat
ground geometry that is used in standard applications of in situ spectrometry. Geometries …