Application Of High Resolution Lithium Drift Germanium Gamma Ray Spectrometers To High Energy Gamma Rays
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Application Of High Resolution Lithium Drift Germanium Gamma Ray Spectrometers To High Energy Gamma Rays
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Author : Atomic Energy of Canada Limited
language : en
Publisher:
Release Date : 1960
Application Of High Resolution Lithium Drift Germanium Gamma Ray Spectrometers To High Energy Gamma Rays written by Atomic Energy of Canada Limited and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960 with categories.
Lithium Drifted Germanium Detectors Their Fabrication And Use
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Author : I. C. Brownridge
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Lithium Drifted Germanium Detectors Their Fabrication And Use written by I. C. Brownridge and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
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.
High Resolution Lithium Drift Germanium Gamma Ray Spectrometer
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Author : Atomic Energy of Canada Limited
language : en
Publisher:
Release Date : 1960
High Resolution Lithium Drift Germanium Gamma Ray Spectrometer written by Atomic Energy of Canada Limited and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960 with categories.
A High Resolution Lithium Drift Germanium Gamma Ray Spectrometer
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Author : A. J. Tavendale
language : en
Publisher:
Release Date : 1963
A High Resolution Lithium Drift Germanium Gamma Ray Spectrometer written by A. J. Tavendale and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with categories.
High Resolution Studies Of Gamma Ray Spectra Using Lithium Drift Germanium Gamma Ray Spectrometers
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Author : Atomic Energy of Canada Limited
language : en
Publisher:
Release Date : 1965
High Resolution Studies Of Gamma Ray Spectra Using Lithium Drift Germanium Gamma Ray Spectrometers written by Atomic Energy of Canada Limited and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with categories.
The Use Of Germanium Lithium Drift P I N Diodes As High Resolution Gamma Ray Spectrometers
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Author : Atomic Energy of Canada Limited
language : en
Publisher:
Release Date : 1964
The Use Of Germanium Lithium Drift P I N Diodes As High Resolution Gamma Ray Spectrometers written by Atomic Energy of Canada Limited and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with categories.
The Fabrication And Use Of High Resolution Lithium Drifted Germanium Gamma Ray Detectors
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Author : John P. Hurley
language : en
Publisher:
Release Date : 1967
The Fabrication And Use Of High Resolution Lithium Drifted Germanium Gamma Ray Detectors written by John P. Hurley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with categories.
Experiments designed to study the behavior of various Ge(Li) detector systems are described. Techniques of improving energy resolution are discussed. Measurements of detector response to thermal radiation are described. A series of measurements showing the variation of line width as a function of energy is discussed. Finally, the appearance of anomolous peaks in the pulse height spectra is described. (Author).
Fabrication Of Lithium Ion Drifted Germanium Detectors And Their Application In The Gamma Ray Spectrometry Of Nuclear Reactions
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Author : Bijan Miremadi-K
language : en
Publisher:
Release Date : 1966
Fabrication Of Lithium Ion Drifted Germanium Detectors And Their Application In The Gamma Ray Spectrometry Of Nuclear Reactions written by Bijan Miremadi-K and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Gamma ray spectrometry categories.
In this thesis the method of fabrication of lithiumion-drifted detectors and their application to gamma-ray spectrometry of Si^°(d*n7)P^1 and Be^(a*ny)C12 reactions are described. 3 The planar-type detectors up to 5 cm sensitive 3 volume and a coaxial type detector of 10 cm sensitive volume have been fabricated. But due to the high leakage current caused by surface contamination* only a few planar-type detectors have been successfully tested. The intrinsic resolution of these detectors for 66l KeV gamma-ray of Cs1^ vary between 3.4 KeV to l6.7 KeV. The energy resolution of the best detector obtained was 3.4 KeV and 7*7 KeV for gamma-rays of energies 0.122 and 2.62 MeV respectively. This detector exhibited an absolute efficiency of 70$ for 122 KeV* decreasing to 0.8$ near the 2 MeV region. 3 A detector with sensitive volume of 3 cm has been 30 31 used to study the gamma-rays produced in the S1J (d*ny)P^ reaction with the hope of determining the branching ratios of 31 PJ gamma-ray transitions. But the low efficiency of the detector above 4 MeV did not allow such measurements to be made. In 12 addition* the 4.43 MeV gamma-ray for C produced by the Q 12 Be^(a*n7)C reaction was studied. This gamma-ray exhibited a Doppler shift and broadening which is discussed as a means of obtaining the lifetimes of nuclear excited states.
Study Of Thermal Neutron Capture Gamma Rays Using A Lithium Drifted Germanium Spectrometer
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Author : Victor John Orphan
language : en
Publisher:
Release Date : 1967
Study Of Thermal Neutron Capture Gamma Rays Using A Lithium Drifted Germanium Spectrometer written by Victor John Orphan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Gamma ray spectrometry categories.
A gamma-ray spectrometer, using a 30 cc coaxial Ge(Li) detector, which can be operated as a pair spectrometer at high energies and in the Compton suppression mode at low energies provides an effective means of obtaining thermal neutron capture gamma spectra over nearly the entire capture gamma energy range. The energy resolution (fwhm) of the spectrometer is approximately 0.5% at 1 MeV and 0.1% at 7 MeV. Capture gamma-ray energies can be determined to an accuracy of about 1 keV. The relatively high efficiency of this spectrometer allows the use of an external neutron beam geometry, which simplifies sample changing. Using a 4096 channel pulse height analyzer, the capture gamma spectrum of an element may be obtained in about one day. Low cross section (order of 0.1 b) elements with many weak intensity gammas may be studied. Over 100 gamma rays have been identified in the spectrum of one such element, Zr. The spectra of Be, Sc, Fe, Ge, and Zr are presented. (Author).
Practical Gamma Ray Spectroscopy
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Author : Gordon Gilmore
language : en
Publisher: John Wiley & Sons
Release Date : 2011-09-07
Practical Gamma Ray Spectroscopy written by Gordon Gilmore and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-09-07 with Science categories.
The Second Edition of Practical Gamma-Ray Spectrometry has been completely revised and updated, providing comprehensive coverage of the whole gamma-ray detection and spectrum analysis processes. Drawn on many years of teaching experience to produce this uniquely practical volume, issues discussed include the origin of gamma-rays and the issue of quality assurance in gamma-ray spectrometry. This new edition also covers the analysis of decommissioned nuclear plants, computer modelling systems for calibration, uncertainty measurements in QA, and many more topics.