Xenon Ionization Detector for Cone Penetrometer Applications

1999 Industry Partnerships to Deploy Environmental Technology Conference

Gary C. Tepper ; Robert L. Palmer

Others  :  http://www.netl.doe.gov/publications/proceedings/99/99em/palmer.pdf
PID  :  5083

来源: CEUR

【 摘 要 】

Gamma ray spectroscopy is well recognized as an important diagnostic tool for the remediation of radioactive contamination sites. In particular, sufficiently accurate measurements of gross environmental gamma ray spectra can be used to identify the constituent radioactive nuclides and determine their concentrations. However, the practical implementation of spectroscopic measurements “in the field” introduces additional difficulties beyond those encountered in a controlled laboratory environment. On the other hand, because of the complicated mix of contaminant species and their widely varying concentrations, the accuracies needed in real field environments are often even more stringent than those required in the laboratory. Adding to these measurement difficulties is the fact that these spectra must be obtained, not in air, but in a relatively highly attenuating and often heterogeneous soil matrix. None of the foregoing problems is insurmountable, however, given the availability of gamma ray sensors with sufficient resolution and stability, and which are suitable for implementation in field-deployable devices such as conepenetrometers.[first paragraph]