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Natural radium isotopes in waters determined with gamma-ray spectrometry using a HPGe detector
(2021-01-01)
This paper describes a methodology developed to measure the activity concentration of the four natural radium isotopes 226Ra, 228Ra, 224Ra and 223Ra in water samples, using γ-ray analysis performed with a hyperpure germanium ...
Positron annihilation spectroscopy techniques applied to the study of an HPGe detector.
(São Sebastião, 2012-09-02)
Doppler Broadening Spectroscopy of the large Ge crystal of an HPGe detector was
perforrned using positrons from pair production of 6.13 MeV ϒ-rays from the 19F(p,αϒ) 16O reaction. Two HPGe detectors facing opposite sides ...
Development of an absolute method for efficiency calibration of a coaxial HPGe detector for large volume sources
(Elsevier, 2015)
In this work an absolute method for the determination of the full energy peak efficiency of a gamma spectroscopy system for voluminous sources is presented. The method was tested for a high-resolution coaxial HPGe detector ...
Triple- and quadruple-escape peaks in HPGe detectors: Experimental observation and Monte Carlo simulation
(ELSEVIER SCIENCE BV, 2010)
The triple- and quadruple-escape peaks of 6.128 MeV photons from the (19)F(p,alpha gamma)(16)O nuclear reaction were observed in an HPGe detector. The experimental peak areas, measured in spectra projected with a restriction ...
Determinación del efecto de suma por coincidencia en detectores HPGe de alta eficiencia relativa
(Lima (Perú)PE, 2007-08)
Se establece una metodología para evaluar el efecto de suma por coincidencia en detectores HPGe de alta eficiencia, relativa a mínimas distancias de medición a partir de una geometría referencial relacionando sus tasas de ...
Evaluación de la eficiencia relativa de detectores HPGe para su empleo en AANI basado en el método K0
(Lima (Perú)PE, 2006-07)
Se establece una metodología para evaluar la curva de eficiencia relativa para detectores HPGe a diferentes distancias, a partir de una geometría referencial mediante la aplicación del efecto de normalización del factor ...
The use of γ-rays analysis by HPGe detector to assess the gross alpha and beta activities in waters
(2018-07-01)
This paper describes an alternative method for evaluating gross alpha and beta radioactivity in waters by using γ-rays analysis performed with hyper-pure germanium detector (HPGe). Several gamma emissions related to α and ...
Improving the efficiency in the detection of gamma activities in environmental soil samples: influence of the granulometry and soil density
(Springer, 2019-07)
In this work the efficiency calibration curves for a HPGe gamma detector were obtained from soil standards prepared in our laboratory using typical Argentine regional soils. They were made in pot and Petri dish geometries, ...