Effects of Experimental Parameters on Thermoluminescence of a Type II-a Diamond PDF Download
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Author: Albert D. Johnson
Publisher:
ISBN:
Category : Crystals
Languages : en
Pages : 42
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Thermoluminescence provides a method for studying properties of those crystalline imperfections which behave as electron traps and recombination centers in wide bandgap materials. This approach, however, has been used relatively little, possibly due to the fact that the shapes and intensities of thermoluminescent glow curves are functions of several experimental parameters and are often complicated by the overlapping of a number of individual glow peaks. In the present work, experimental parameters were isolated and some of their effects on thermoluminescent glow curves were analyzed. This yielded information on activation energies associated with trapping levels, the nature of the kinetics involved in electron transitions, and electron retrapping. A Type II-a diamond, which has a wide distribution of thermoluminescent glow peaks, was used in this work. (Author).
Author: Albert D. Johnson
Publisher:
ISBN:
Category : Crystals
Languages : en
Pages : 42
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Book Description
Thermoluminescence provides a method for studying properties of those crystalline imperfections which behave as electron traps and recombination centers in wide bandgap materials. This approach, however, has been used relatively little, possibly due to the fact that the shapes and intensities of thermoluminescent glow curves are functions of several experimental parameters and are often complicated by the overlapping of a number of individual glow peaks. In the present work, experimental parameters were isolated and some of their effects on thermoluminescent glow curves were analyzed. This yielded information on activation energies associated with trapping levels, the nature of the kinetics involved in electron transitions, and electron retrapping. A Type II-a diamond, which has a wide distribution of thermoluminescent glow peaks, was used in this work. (Author).
Author: Albert D. Johnson
Publisher:
ISBN:
Category : Crystals
Languages : en
Pages : 0
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Book Description
Thermoluminescence provides a method for studying properties of those crystalline imperfections which behave as electron traps and recombination centers in wide bandgap materials. This approach, however, has been used relatively little, possibly due to the fact that the shapes and intensities of thermoluminescent glow curves are functions of several experimental parameters and are often complicated by the overlapping of a number of individual glow peaks. In the present work, experimental parameters were isolated and some of their effects on thermoluminescent glow curves were analyzed. This yielded information on activation energies associated with trapping levels, the nature of the kinetics involved in electron transitions, and electron retrapping. A Type II-a diamond, which has a wide distribution of thermoluminescent glow peaks, was used in this work. (Author).
Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 892
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Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1576
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Author: Albert D. Johnson
Publisher:
ISBN:
Category : Energy-band theory of solids
Languages : en
Pages : 36
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Several features of thermoluminescence from chromium-doped lithium germanate were explored. These included: thermoluminescence excitation and emission spectra, thermal activation energies, recombination kinetics, behavior of glow curves as a function of sample temperature-during-excitation, and thermal bleach after excitation. Strong thermoluminescence was obtained by exciting electrons to energies above the U- and Y-absorption bands, and very weak thermoluminescence by exciting to these bands. Thermoluminescence emission occurred in the same wavelength region as fluorescence. Activation energies ranged from 0.17 to 2.3 eV. Thermoluminescence was found to be a sensitive function of temperature-during-excitation; large increases in high-temperature peaks were accompanied by small decreases in low-temperature glow peaks. Thermal bleaching after excitation, however, left high temperature peaks unchanged, while low-temperature peaks were removed. (Author).
Author:
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ISBN:
Category : Science
Languages : en
Pages : 776
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Author: United States. Air Force. Office of Aerospace Research
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ISBN:
Category : Aeronautics
Languages : en
Pages : 586
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Author: Charles J. Drane (Jr.)
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ISBN:
Category : Antenna arrays
Languages : en
Pages : 30
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Author: J. K. Schindler
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ISBN:
Category : Electromagnetism
Languages : en
Pages : 24
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Author: E. Czerlinsky
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ISBN:
Category : Anisotropy
Languages : en
Pages : 14
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