Oscillator Analysis of LiF and MgO Reflectivity PDF Download
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Author: Alfred Kahan
Publisher:
ISBN:
Category : Lithium compounds
Languages : en
Pages : 62
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Book Description
Classical oscillator theory is applied to the analysis of the fundamental lattice vibration reflectivity spectrum of LiF and MgO in the 200 to 800/cm wave-number range. For each material seven reflectivity curves, ranging from 7.5 to 1060K for LiF and from 8 to 1950K for MgO, are analyzed and the associated dispersion parameters as a function of temperature obtained. The reflectivity curves of both LiF and MgO can be fitted with two resonances at all temperatures. Resonance frequencies nu sub 1 and nu sub 2 are decreasing functions, whereas strengths 4 pi rho sub 1 and 4 pi rho sub 2 are increasing functions of temperature. At the higher temperatures, the width of the main resonance gamma sub 1 obeys a T91.0) power law for LiF and a T(1.5) LAW FOR MgO. In addition, optical constants, real and imaginary parts of the dielectric constant, and absorption coefficients are calculated as functions of wave number and temperature. A description of the classical analysis computer program is included, together with input requirements and FORTRAN IV listings. (Author).
Author: Alfred Kahan
Publisher:
ISBN:
Category : Lithium compounds
Languages : en
Pages : 62
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Book Description
Classical oscillator theory is applied to the analysis of the fundamental lattice vibration reflectivity spectrum of LiF and MgO in the 200 to 800/cm wave-number range. For each material seven reflectivity curves, ranging from 7.5 to 1060K for LiF and from 8 to 1950K for MgO, are analyzed and the associated dispersion parameters as a function of temperature obtained. The reflectivity curves of both LiF and MgO can be fitted with two resonances at all temperatures. Resonance frequencies nu sub 1 and nu sub 2 are decreasing functions, whereas strengths 4 pi rho sub 1 and 4 pi rho sub 2 are increasing functions of temperature. At the higher temperatures, the width of the main resonance gamma sub 1 obeys a T91.0) power law for LiF and a T(1.5) LAW FOR MgO. In addition, optical constants, real and imaginary parts of the dielectric constant, and absorption coefficients are calculated as functions of wave number and temperature. A description of the classical analysis computer program is included, together with input requirements and FORTRAN IV listings. (Author).
Author: John R. Jasperse
Publisher:
ISBN:
Category : Infrared spectra
Languages : en
Pages : 24
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1014
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Author: Air Force Cambridge Research Laboratories (U.S.)
Publisher:
ISBN:
Category : Geophysics
Languages : en
Pages : 350
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Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1086
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 776
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 1460
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Eunice C. Cronin
Publisher:
ISBN:
Category : Military research
Languages : en
Pages : 644
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Book Description
A systems analysis technique is applied to the scientific problem solving requirements of a major Air Force research organization to establish: The functional organization of a research support group; A valuable data base for a Customer User Library (CUL); and A Management Information System for scheduling, reporting and control. The report summarizes the functional organization of the Analysis and Simulation Branch of the Computation Center at AFCRL as derived from an analysis of the spectrum of analytical and computational problems originating in the Laboratories. A detailed description the structure and mode of operation of the Customer User Library is provided, together with a discussion of the associated Management Information System. An extensive listing of scientific problem abstracts is provided in the Appendices.
Author: Air Force Cambridge Research Laboratories (U.S.)
Publisher:
ISBN:
Category : Atmosphere, Upper
Languages : en
Pages : 88
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Book Description
The bibliography of AFCRL in-house technical reports lists all reports issued in the existing series. In addition, appendices list reports issued from 1962 to 1964 when series designations were not used, and reports issued in now-defunct series.
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1452
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