Sampo A Fortran Iv Program For Computer Analysis Of Gamma Spectrafrom Ge Li Detectors And For Other Spectra With Peaks
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Lithium-Drifted Germanium Detectors: Their Fabrication and Use
Author: I. C. Brownridge
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-12-06
A lithium-drifted germanium detector is a semiconductor de vice which operates at liquid nitrogen temperature, and is used for detection of nuclear radiation, mostly gamma ray. The detection occurs when the y-ray undergoes an interaction in the intrinsic or I region of the semiconductor. The interaction results in the pro duction of charge carriers which are swept out by an electric field. This is accomplished by reverse biasing the detector with approxi mately 100 v/mm of intrinsic material. The total amount of charge swept out is proportional to the energy dissipated in the intrinsic region. This may include the total energy of the photon, but gen erally somewhat less. The Ge(Li) device is a semiconductor p-n device with a very large intrinsic region between the positive carrier region and the negative carrier region (P-I-N). The fabrication of this device consists of three major steps: the diffusion of the lithium into the p-type germanium to give an n-type surface region, the drifting process to obtain the intrinsic region as deeply as possible, and the surface preparation. There are numerous procedures for the various steps as well as criteria for material selection and the preparation of the materials.
Amplitude Distribution Spectrometers V3
Fundamental Studies in Engineering 3: Amplitude Distribution Spectrometers reviews amplitude or pulse-height distribution analyzers, both single- and multichannel types, and spectrometers, along with their construction and operation. It discusses the basic parameters of electrical impulses, the general parameters of amplitude distribution spectrometers, the conventional methods of analyzing amplitude distribution by means of single-channel spectrometers, analysis of amplitude spectra using computer methods, and methods and devices for multiparameter amplitude analysis. Comprised of eight chapters, this volume begins with an overview of physical phenomena that can be represented in the form of electrical impulses arising in transducers of physical quantities. It then discusses the use of pulse-height spectrometers to determine the height distributions of electrical impulses, trends in the development of pulse-height spectrometers, conventional pulse-height analysis, and multispectral scaling. The reader is methodically introduced to the analysis of Gaussian distributions, Fourier-transform analysis, and measuring units used in preliminary signal processing. Other chapters focus on spectrogram recording methods, methods of spectrum averaging, computer methods of spectral analysis, and methods of recording multi-parameter spectrograms. The book concludes with a review of the use of pulse-height spectrometers in a wide range of fields such as medicine, biology, astronomy, nuclear research, space research, and physico-chemical research. Users of amplitude spectrometers in various fields of science and technology will find this book extremely useful.
Gaas Detectors And Electronics For High Energy Physics - Proceedings Of The 20th Infn Eloisatron Project Workshop
The 1952 Nobel physics laureate Felix Bloch (1905-83) was one of the titans of twentieth-century physics. He laid the fundamentals for the theory of solids and has been called the “father of solid-state physics.” His numerous, valuable contributions include the theory of magnetism, measurement of the magnetic moment of the neutron, nuclear magnetic resonance, and the infrared problem in quantum electrodynamics.Statistical mechanics is a crucial subject which explores the understanding of the physical behaviour of many-body systems that create the world around us. Bloch's first-year graduate course at Stanford University was the highlight for several generations of students. Upon his retirement, he worked on a book based on the course. Unfortunately, at the time of his death, the writing was incomplete.This book has been prepared by Professor John Dirk Walecka from Bloch's unfinished masterpiece. It also includes three sets of Bloch's handwritten lecture notes (dating from 1949, 1969 and 1976), and details of lecture notes taken in 1976 by Brian Serot, who gave an invaluable opinion of the course from a student's perspective. All of Bloch's problem sets, some dating back to 1933, have been included.The book is accessible to anyone in the physical sciences at the advanced undergraduate level or the first-year graduate level.