Lithium Drifted Germanium Detectors Their Fabrication And Use
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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.
Lithium Drifted Germanium Detectors
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Author : I C Brownridge
language : en
Publisher:
Release Date : 1972-01-01
Lithium Drifted Germanium Detectors written by I C Brownridge and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972-01-01 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).
Nomographs For Use In The Fabrication And Testing Of Ge Li Detectors
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Author : Alvin H. Sher
language : en
Publisher:
Release Date : 1970
Nomographs For Use In The Fabrication And Testing Of Ge Li Detectors written by Alvin H. Sher and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Gamma rays categories.
Six nomographs which can facilitate the fabrication and testing of lithium-drifted germanium gamma-ray detectors (Ge(Li) detectors) have been constructed which relate the following parameters:time, temperature, applied bias, and drifted depth:lithium mobility, crystal resistivity, and oxygen concentration; area, capacitance, and drifted depth for planar Ge(Li) detectors; drifted depth, length, and capacitance for coaxial Ge(Li) detectors; total spectral resolution; system noise, and detector resolution; gamma-ray energy, and effective Fano factor.The use of these nomographs is described and illustrative examples are given.(Author).
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 Drifted Germanium Detectors Of Planar Structures
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Author : Khin Maung Yin
language : en
Publisher:
Release Date : 1969
Fabrication Of Lithium Drifted Germanium Detectors Of Planar Structures written by Khin Maung Yin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Nuclear counters categories.
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.
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.
An Annular Lithium Drifted Germanium Detector For Studying Nuclear Reaction Gamma Rays
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Author : A. J. Levy
language : en
Publisher:
Release Date : 1968
An Annular Lithium Drifted Germanium Detector For Studying Nuclear Reaction Gamma Rays written by A. J. Levy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Gamma rays 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.