System for visualization of radionuclide distribution in samples of mountain rock

Author

Stepanov, V.E. ; Ivanov, O.P. ; Bahur, A.E.

Author_Institution

Kurchatov (I.V.) Inst. of Atomic Energy, Moscow, Russia

Volume

1

fYear

2000

fDate

2000

Abstract

The system is based on combined detector: scintillating plate+image intensifier+CCD sensor. At optimal choice of voltages its sensitivity allows the detection of single photon with energy higher than 60 keV. The specially prepared samples are located directly on a thin metal holder of a crystal. The detector has the spatial resolution of 0.3 mm. The developed technique of measuring and digital processing of raw images resulted in 2D maps of the radionuclide distributions and shadow X-ray images of samples. Superposition of the images gives coordinate positioning in founded distributions. For separation of gamma and beta radiation of the samples the filters of various thickness were applied. Examples of the images of rock slices with natural radionuclides and samples with technogenic pollution are presented

Keywords

CCD image sensors; X-ray detection; beta-ray detection; gamma-ray detection; geophysical techniques; pollution measurement; position sensitive particle detectors; radioactive pollution; radioisotopes; rocks; solid scintillation detectors; 2D maps; CCD sensor; beta radiation; combined detector; coordinate positioning; digital processing; gamma radiation; image intensifier; mountain rock; natural radionuclides; radionuclide distribution; raw images; rock slices; scintillating plate; shadow X-ray images; spatial resolution; technogenic pollution; Detectors; Filters; Optoelectronic and photonic sensors; Photonic crystals; Pollution measurement; Sensor systems; Spatial resolution; Visualization; Voltage; X-ray imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2000 IEEE

Conference_Location

Lyon

ISSN

1082-3654

Print_ISBN

0-7803-6503-8

Type

conf

DOI

10.1109/NSSMIC.2000.949213

Filename

949213