background: the activity concentrations of some radionuclides in soil samples collected from 20 locations in 8 major towns in oyo state, southwestern nigeria have been determined by gamma-ray spectrometry technique. materials and methods: the activity concentrations were determined using high-purity germanium (hpge) detector (canberra industries inc.). the outdoor absorbed dose rates in air at ...

ntroduction: The purpose of this study was to measure the radioactivity in the agricultural soil of south-east of Shazand Refinery Complex to determine both reliable baseline data on the radiation level and the radiation dose exposure to the farmers and inhabitants of the studied area. Material and Methods: This study was conducted on 21 soil...

We present experimental evidence showing that the period of the rippled surface structure induced on germanium by 1.06-microm laser pulses undergoes a discontinuous shift above a certain threshold intensity. The measured shift, as a angle of incidence of the damaging beam, is quantitatively interpreted as a transition between a regime of inhomogeneous melting controlled by radiation-remnant fie...

Previous logCd-based K XRF bone lead measurement systems have used an annular source of “‘Cd mounted coaxially with, and in front of, a 16 mm diameter hyperpure germanium detector. To take advantage of the advent of larger volume detectors, the IogCd fluorescing source was redesigned to allow its positioning at the center of the I detector face. The redesigned source is a cylinder of external d...

The nuclear line region of the gamma ray spectrum remains one of the most challenging and elusive goals of high energy astrophysics. The scientific objectives are well defined, but require well over a factor of 10 increase in sensitivity compared to present day instruments to be achieved. The most promising approach to achieve this sensitivity and a broad range of scientific objectives is offer...

This work presents the results from characterization of a Position-Sensitive Planar Germanium (PSPGe) detector. The PSPGe detector is double-sided orthogonal strip consisting 10x10 electrical segmentation along horizontal and vertical directions. was performed using coincidence setup between well-characterized scanning system employing positron annihilation correlation principle. consists Posit...

Germanium detectors have very good capabilities for the investigation of rare phenomena like the neutrinoless double beta decay. Rejection of the background entangling the expected signal is one primary goal in this kind of experiments. Here, the attainable background reduction in the energy region where the neutrinoless double beta decay signal of Ge is expected to appear has been evaluated fo...

The GERmanium Detector Array (GERDA) experiment, located at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN, searches for 0νββ of Ge. Germanium diodes enriched to ∼ 86 % in the double beta emitter Ge(Ge) are exposed being both source and detectors of 0νββ decay. Neutrinoless double beta decay is considered a powerful probe to address still open issues in the neutrino sector of the (beyon...