The Fabrication And Use Of High Resolution Lithium Drifted Germanium Gamma Ray Detectors
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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).
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.
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.
The Fabrication Of Lithium Drifted Germanium Gamma Ray Detectors
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Author : Edward Vincent DeBoeser
language : en
Publisher:
Release Date : 1965
The Fabrication Of Lithium Drifted Germanium Gamma Ray Detectors written by Edward Vincent DeBoeser and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Gamma rays categories.
Fabrication Of Lithium Drift Germanium Radiation Detectors
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Author : James Benedict Mullady
language : en
Publisher:
Release Date : 1966
Fabrication Of Lithium Drift Germanium Radiation Detectors written by James Benedict Mullady and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with categories.
A simple technique for fabricating lithium-drift germanium radiation detectors for use in gamma-ray spectroscopy is described in detail. Lithium-ion drift is conducted in room atmosphere at constant temperature and voltage for 470 hours to obtain a 2 mm thick sensitive region 7.5cm2 in area. One detector made by this method gives 10.3 kev (fwhm) resolution for the Cs137 662 kev gamma-ray. Leakage current at 77K and 65 volts reverse bias is 1.65 x 0.0000001 A.
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
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Author : International Atomic Energy Agency
language : en
Publisher:
Release Date : 1966
Lithium Drifted Germanium Detectors written by International Atomic Energy Agency 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 rays categories.
Nuclear Science Abstracts
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Author :
language : en
Publisher:
Release Date : 1974
Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Nuclear energy categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1971
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Aeronautics categories.
Critical Assemblies And Reactor Research
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Author : Loren Clark Schmid
language : en
Publisher: John Wiley & Sons
Release Date : 1971
Critical Assemblies And Reactor Research written by Loren Clark Schmid 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 1971 with Science categories.