A method of obtaining high sensitivity and precision in x-ray fluorescence analysis using semiconductor detector spectrometers is discussed. Monoenergetic exciting radiation is employed to generate characteristic x-rays from trace elements in thin, uniform specimens. Corrections for absorption effects are determined; enhancement effects are omitted as they are negligible for many thin specimens...

A report on the status of the development of picosecond photoconductive detectors is presented. The main application of these devices is the single-shot temporal measurement of picosecond X-ray, UV, and visible light pulses. We compare different materials, and describe the X-ray autocorrelator and the single-shot sampler developed in the LETI (Grenoble). Submitted to the 9th International Works...

Methods have been developed to improve the reliability of silicon sensors, in particular for pixel detectors, and their resistance to radiation damage, as it is encountered in tracking detectors in particle physics experiments. The choice of wafer material, the processing techniques, and the sensor layout are discussed. Alternative semiconductor substrates and variations on the planar hybrid de...

This report describes a man versus man semiconductor laser weapon fire simulation system that eliminates the requirement that the trainee wear on his body numerous laser detectors that impede his motion and are subject to damage. The system utilizes retroreflective material and two transmitted eyesafe laser beams. The first beam, when reflected, ascertains a hit and the second broad beam commun...

III Novel submillimeter-size lenses have been fabricated in compound semiconductor substrates by mesa etching and heat treatment. These precision large-numerical-aperture microlenses are well suited for diode lasers and laser arrays in miniaturized systems. Alaser array has been efficiently coupled to an external cavity by a microlens array to achieve coherent phase locking. As part of a semico...

This paper describes an empirically derived algorithm to compensate for charge trapping in CdTe, CdZnTe, and other planar semiconductor detectors. The method is demonstrated to be an improvement over available systems and application to experimental data is shown.

Superconductor films on semiconductor substrates have drawn much attention recently since the derived superconductor-based electronics have been shown to be promising for future data processing and storage technologies. By growing atomically uniform single-crystal epitaxial Pb films of several nanometers thick on Si wafers to form a sharp superconductor-semiconductor heterojunction, we have obt...

The knowledge of capacitance in semiconductor micro-strip detectors is important for a correct design, simulation and understanding of the detectors. Analytical approaches can efficiently complement numerical methods providing quick results in the design phase. The conformal mapping method has proved to be the most effective analytical approach providing many realistic models [1]-[2]. In this p...

Abstract Dealing with large-scale application of semiconductor detectors, one of the keystones is to ensure the robustness and long-term electrical stability. A phenomenon that can compromise the performance of a system based on these detectors is the dependence of the punch-through effect on the environmental conditions. In this paper we investigated the influence of humidity on the punch-thro...

The need for ultra-radiation hard semiconductor detectors for the inner tracker regions in high energy physics experiments of the future generation can be satisfied either with materials which are inherently more radiation hard than float zone silicon or with special detector structures with improved radiation resistance. This report compares directly the data on the performance of rad-hard mat...