The concentrations of natural (226Ra, 232Th, 40K) and anthropogenic (137Cs) in Western Coastal South Sulawesi were measured by gamma-ray spectrometry with a high-purity germanium (HPGe) detector connected to multichannel analyzer. maximum activity concentration radionuclides was found 47.29 ± 4.14 Bq/kg for226Ra, 52.73 5.28 for232Th 744.00 29.45 for40K. In general, the radioactivity marine sedi...

The half-life, 3.8755(12) s, and superallowed branching ratio, 0.5315(12), for 22Mg beta decay have been measured with high precision. The latter depended on gamma-ray intensities being measured with an HPGe detector calibrated for relative efficiencies to an unprecedented 0.15%. Previous precise measurements of 0+ --> 0+ transitions have been restricted to the nine that populate stable daughte...

Aerosol samples collected on filter media were analyzed using HPGe detectors employing varying background-reduction techniques in order to experimentally evaluate the opportunity to apply ultra-low background measurement methods to samples collected, for instance, by the Comprehensive Test Ban Treaty International Monitoring System (IMS). In this way, realistic estimates of the impact of low-ba...

Concentrations of natural radionuclides (Ra and Th) in ground and drinking waters of some areas in Upper Egypt were determined by gamma ray spectrometry with a HPGe detector setup, coaxial type and 8192 channels MCA. The investigated waters differed in radioactivity content depending on their origin and place. In drinking water in Qena, Upper Egypt, the mean Ra concentration was 1.32 ± 0.7 pCi/...

The gamma ray spectrometry laboratory of the University of Bucharest was designed for the analysis of low-level radioactivity samples. High efficiency shielded HPGe detectors are used. Efficiency calibration is achieved by complementing experimental calibration with Monte Carlo computation carried out using GESPECOR, also applied for the evaluation of coincidence summing corrections. Low detect...

Distributions of primordial radionuclides in soil and vegetables were investigated using high-purity germanium gamma-ray spectrometry. Gamma-ray spectrometry is one of the most accepted and widely used techniques for the detection and analysis of radioactive materials for a wide range of activity. Important properties of the employed gamma-ray detector were also determined to ensure the accurac...

The spins and parities of low-lying states in $^{72}\mathrm{Br}$ populated the $\ensuremath{\beta}$ decay $^{72}\mathrm{Kr}$ have been studied via conversion electron spectroscopy. measurements were carried out at ISOLDE using a miniorange spectrometer with Si(Li) HPGe detectors for electrons $\ensuremath{\gamma}$ ray detection. Results coefficients corresponding to transitions deexciting 12 le...

The main objective of the present study was to assess natural radioactivity level from soils an abandoned potash mine and its surroundings at Holle locality in Hinda district, Republic Congo. Samples were analyzed using HPGe gamma spectrometer. Activity concentration values obtained varied 21.01 ± 6.47 117.3 2.69 Bq/kg with a mean value 46.15 4.69 40 K; that 238 U 17.36 10.74 40.04 8.58 25.14 1...

The NEAR station is the newest experimental area of n_TOF facility at CERN, utilizing spallation process to generate extremely high neutron flux within a broad energy spectrum. As part campaign for determination beam spectral features, numerous foils have been irradiated last year and induced activities were measured implementing HPGe detector.
 Experimental data analysis foil’s gamma-ray ...

A bstract PandaX-4T is a ton-scale dark matter direct detection experiment using dual-phase TPC technique at the China Jinping Underground Laboratory. Various ultra-low background technologies have been developed and applied to material screening for PandaX-4T, including HPGe gamma spectroscopy, ICP-MS, NAA, radon emanation measurement system, krypton assay station, alpha system. Low materials ...