Archeological artifacts can be analyzed after neutron irradiation at the pulsed ISIS and muon source, UK, using a newly installed high purity germanium gamma ray spectrometer to perform activation analysis. In this work, details of measurement methods data analysis are presented. particular, it is explained how Monte Carlo calculations necessary evaluate detection efficiency, taking into accoun...

In a theoretical design study, we propose buried waveguides made of germanium or alloys of germanium and other group-IV elements as a CMOS-compatible platform for robust, high-gain stimulated Brillouin scattering (SBS) applications in the mid-infrared regime. To this end, we present numerical calculations for backward-SBS at 4 μm in germanium waveguides that are buried in silicon nitride. Due t...

Group-IV materials for monolithic integration with silicon optoelectronic systems are being extensively studied. As a part of efforts, light emission from germanium has been pursued with the objective of evolving germanium into an efficient light source for optical communication systems. In this study, we demonstrate room-temperature electroluminescence from germanium in an Al(0.3)Ga(0.7)As/Ge ...

Tobacco samples were collected from different tobacco markets Antalya in Turkey. To calculate natural radionuclides activity concentration, counted for 86400 seconds by using high purity germanium (HPGe) detector. Activity concentrations of 226Ra, 232Th and 40K found higher than minimum detectable (MDA). 137Cs was not detected any sample. concentration range 83±15 Bqkg-1 to 325±45 Bqkg-1, 29±5 ...

Activity concentrations of radionuclides (238U, 226Ra, 232Th, and 40K) in the sediments eight sampling stations heavy metal (Cr, Co, Ni, Cu, Zn, As, Cd, Pb) two long cores from Nansha Sea area were obtained by high-purity germanium spectroscopy inductively coupled plasma atomic emission spectrometry. In a correlation analysis between metals, 232Th was positively correlated with As Pb. 238U demo...

Abstract The realization of pulsed-laser diffused, thin n $$+$$ + contacts on high purity germanium (HPGe) and their successful segmentation is described. have been obtained by a laser-induced diffusion Sb atoms, deposited sputtering Ge surface, then segmented means photolithographic technique. Three small pr...

Background: This study aimed to investigate the radiation hazard indices from sand samples of Ma’rib Governorate in Yemen, where majority oil and gas facilities are installed. Methods Materials: Thirty five desert Yemen were collected tested their by using High Purity Germanium (HPGe) detector. Results: Based on measurement concentrations 226Ra, 232Th, 40K, radium equivalent activity (Raeq), co...

The sensitivity of experiments searching for neutrinoless double beta-decay of germanium was so far limited by the background induced by external γ-radiation. Segmented germanium detectors can be used to identify photons and thus reduce this background component. The GERmanium Detector Array, GERDA, will use highly segmented germanium detectors in its second phase. The identification of photoni...