Fabrication Of Lithium Drifted Germanium Detectors Of Planar Structures

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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.

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.

Preparation Of Planar Lithium Drifted Germanium Detectors

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Author : Glen L. Jackson
language : en
Publisher:
Release Date : 1969

Preparation Of Planar Lithium Drifted Germanium Detectors written by Glen L. Jackson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Diffusion 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.

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.

The Manufacture Of Ge Li Detectors

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Author : Armando Severo Martins De Jesus
language : en
Publisher:
Release Date : 1969

The Manufacture Of Ge Li Detectors written by Armando Severo Martins De Jesus and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with 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.

Charge Collection Efficiencies For Lithium Drifted Silicon And Germanium Detectors In The X Ray Energy Region

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Author : H. R. Zulliger
language : en
Publisher:
Release Date : 1968

Charge Collection Efficiencies For Lithium Drifted Silicon And Germanium Detectors In The X Ray Energy Region written by H. R. Zulliger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with categories.

Theoretical calculations showing the charge collection efficiencies of Ge(Li) and Si(Li) planar detectors as a function of trapping lengths and incident X-ray energies are presented. It is demonstrated that there should be an intrinsic energy dependence of the charge collection efficiency for radiation lengths comparable to the detector depletion depth. The nonlinear behavior is generally greater for unequal hole and electron trapping lengths. Experimental results confirm this in part, but surface effects appear to accentuate the effect. It is concluded that, neglecting surface effects, the nonlinearities should be eliminated if the radiation is incident in a direction perpendicular to the field. Highest charge collection efficiency, best resolution and linearity are obtained by injecting the photons through the detector side (perpendicular to the field) along a unique plane which is defined by the electron to hole trapping ratio. (Author).

Germanium Lithium Detector Fabrication

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Author : James M. MATHIESEN
language : en
Publisher:
Release Date : 1965

Germanium Lithium Detector Fabrication written by James M. MATHIESEN 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.

Techniques for the manufacture of Ge(Li) detectors are described. A step-by-step description is given for each of the procedures in the fabrication of a Ge(Li) detector, including germanium preparation, lithium diffusion, lithium drift, and test and evaluation. The necessary materials and equipment are also listed together with their availabilities. The text is augmented with detailed diagrams. Finally examples are given of gamma-ray pulse height spectra which have been recorded with a Ge(Li) detector. (Author).