Advances in mercuric iodide X-ray detectors and low noise preamplification systems

Abstract

This paper describes progress achieved at the Institute of Physics in the development of miniature, low power mercuric iodide (HgI2) X-ray spectrometers operating at, or near, room temperature with high energy resolution. The development of single detector spectrometers and, lately, of multidetector array systems has been driven by the specific needs of space exploration and synchrotron radiation applications. Progress has been made in various areas. Advances in the detector fabrication technology, including improved resolution, vacuum operation, improved reliability and longevity, high count rate capability, and the development of soft X-ray transparent encapsulants, are discussed. © 1989.