We compute the scattering rates for the lightest neutralino χ1 in the forthcoming germanium (73Ge+76Ge) detector and a proposed lead detector (207Pb), within the framework of SU(5) × U(1) supergravity. We find that in only a small portion (<∼ 10%) of the parameter spaces of this class of models, are the rates in the germanium detector above the expected initial experimental sensitivity of 0.1 e...

The response of a high-purity germanium detector to X-rays in the 8-15-keV energy region has been investigated. The w-value and energy resolution dependencies on the X-ray energy have been studied. No abrupt variation of w is observed at the germanium K absorption-edge (11.104-keV). The detector energy resolution follows a characteristic linear dependence on Ex(-1/2) over the whole energy range...

The EXOGAM clover detector consists of four high-purity germanium (HPGe) crystals in a common cryostat. Each individual crystal is electrically segmented into four regions. We propose a method based on a multidimensional fitting procedure to calibrate the energy from the segments. This method could be used for any kind of segmented germanium detector. Its application to the EXOGAM clover is dis...

We present Monte Carlo computer simulations of the X-ray response of a micro-strip germanium detector over the energy range 30}100 keV. The detector consists of a linear array of lithographically de"ned 150 lm wide strips on a high purity monolithic germanium crystal of 6 mm thickness. The simulation code is divided into two parts. We "rst consider a 10 lm wide X-ray beam striking the detector ...

High purity germanium (HPGe) detectors used in radionuclide assay systems such as Radionuclide Aerosol Sampler/Analyzer (RASA) systems must operate unattended for long periods of time. Currently, the performance and reliability of commercially available large (~100%) HPGe detectors are acceptable for the majority of laboratory applications. However, for remote systems designed for nuclear deton...

The GERmanium Detector Array, GERDA, is designed for the search for “neutrinoless double beta decay” (0ν2β) with germanium detectors enriched in 76Ge. An 18-fold segmented prototype detector for GERDA Phase II was exposed to an AmBe neutron source to improve the understanding of neutron induced backgrounds. Neutron interactions with the germanium isotopes themselves and in the surrounding mater...

The Long-Wavelength Spectrometer (LWS) onboard the Infrared Space Observatory (ISO) covers the 43-197m region with ten doped-Germanium photocon-ductors that are read out with integrating JF-4 ampli-ers. The behaviour of these detector/readout units during some 500 days of operations in space is described. There are no systematic variations of the sensitivity and of the dark current in observati...

Phase contrast in X-ray imaging provides lower radiation dose, and dramatically higher contrast at multi-keV photon energies when compared with absorption contrast. We describe here the use of a segmented detector in a scanning transmission X-ray microscope to collect partially coherent bright field images. We have adapted a Fourier filter reconstruction technique developed by McCallum, Landaue...