Download or read book Lithium Drifted Germanium Detectors Their Fabrication and Use written by I. C. Brownridge and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Lithium Drifted Germanium Detectors written by I C Brownridge and published by . This book was released on 1972-01-01 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Fabrication of Lithium drifted Germanium Gamma ray Detectors written by Edward Vincent DeBoeser and published by . This book was released on 1965 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fabrication of Lithium Drifted Germanium Detectors of Planar Structures written by Khin Maung Yin and published by . This book was released on 1969 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fabrication of Lithium Ion Drifted Germanium Detectors and Their Application in the Gamma Ray Spectrometry of Nuclear Reactions written by Bijan Miremadi-K and published by . This book was released on 1966 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The Fabrication and Use of High Resolution Lithium drifted Germanium Gamma ray Detectors written by John P. Hurley and published by . This book was released on 1967 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Download or read book Nomographs for Use in the Fabrication and Testing of Ge Li Detectors written by Alvin H. Sher and published by . This book was released on 1970 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Download or read book Vienna 1966 Lithium drifted germanium detectors Proceedings of a panel on the use of lithium drifted germanium gamma ray detectors for research in nuclear physics held in Vienna 6 10 June 1966 With illustrations written by Panel on the Use of Lithium-Drifted Germanium Gamma-Ray Detectors for Research in Nuclear Physics (INTERNATIONAL ATOMIC ENERGY AGENCY) and published by . This book was released on 1966 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lithium drifted Germanium Detectors written by International Atomic Energy Agency and published by . This book was released on 1966 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book GERMANIUM LITHIUM DETECTOR FABRICATION written by James M. MATHIESEN and published by . This book was released on 1965 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Download or read book Fabrication of Lithium drift Germanium Radiation Detectors written by James Benedict Mullady and published by . This book was released on 1966 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Annular Lithium drifted Germanium Detector for Studying Nuclear Reaction Gamma rays written by A. J. Levy and published by . This book was released on 1968 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lithium drifted Germanium Detectors written by International Atomic Energy Agency and published by . This book was released on 1966 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lithium drifted Silicon Detectors as Low energy Photon Spectrometers written by Sherwin M. Beck and published by . This book was released on 1969 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lithium drifted Germanium Detectors written by and published by . This book was released on 1966 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Theory Fabrication and Properties of a Lithium Drifted Semiconductor Nuclear Particle Detector with a Large Sensitive Volume written by Patrick Harrold Hunt and published by . This book was released on 1967 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
