TY - JOUR
T1 - PHAROS
T2 - A pluri-detector, high-resolution, analyser of radiometric properties of soil
AU - Rigollet, C.
AU - de Meijer, R.J.
PY - 2002/8/11
Y1 - 2002/8/11
N2 - PHAROS is a new type of core logger, designed to measure activity concentrations of K-40, U-238, Th-232 and (CS)-C-137 in sediment and rock cores with a spatial resolution of a few centimetres along the core. PHAROS has been developed as a non-destructive alternative to the traditional slicing of cores into sub-samples and their analysis on an HPGe detector. The core is scanned at fixed increments by three BGO scintillation detectors and the spectra analysed by the full spectrum analysis method. The core logger is also equipped with a collimated lead castle and a 137CS source for transmission measurements. In this paper, we report on the properties of the core logger and its detectors, and on the analysis techniques used for the determination of the radionuclides activity concentrations. Results from initial measurements are presented and discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
AB - PHAROS is a new type of core logger, designed to measure activity concentrations of K-40, U-238, Th-232 and (CS)-C-137 in sediment and rock cores with a spatial resolution of a few centimetres along the core. PHAROS has been developed as a non-destructive alternative to the traditional slicing of cores into sub-samples and their analysis on an HPGe detector. The core is scanned at fixed increments by three BGO scintillation detectors and the spectra analysed by the full spectrum analysis method. The core logger is also equipped with a collimated lead castle and a 137CS source for transmission measurements. In this paper, we report on the properties of the core logger and its detectors, and on the analysis techniques used for the determination of the radionuclides activity concentrations. Results from initial measurements are presented and discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
KW - BGO scintillation detector
KW - background
KW - natural radioactivity
KW - transmission measurement
KW - Cs-137 dating of sediment
KW - ENERGY-ABSORPTION COEFFICIENTS
KW - SPECTROMETRY
KW - SAMPLES
U2 - 10.1016/S0168-9002(02)00559-4
DO - 10.1016/S0168-9002(02)00559-4
M3 - Article
SN - 0168-9002
VL - 488
SP - 642
EP - 653
JO - Nuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment
JF - Nuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment
IS - 3
M1 - PII S0168-9002(02)00559-4
ER -