Results 281 to 290 of about 5,649,577 (317)
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2008
In local thermodynamic equilibrium (LTE) the intensities of emitted and absorbed radiation are not independent but are related by Kirchhoff’s law (1.14). This applies to both continuous radiation and line radiation. The Einstein coefficients give a convenient means to describe the interaction of radiation with matter by the emission and absorption of ...
Thomas L. Wilson +2 more
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In local thermodynamic equilibrium (LTE) the intensities of emitted and absorbed radiation are not independent but are related by Kirchhoff’s law (1.14). This applies to both continuous radiation and line radiation. The Einstein coefficients give a convenient means to describe the interaction of radiation with matter by the emission and absorption of ...
Thomas L. Wilson +2 more
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2010
Optical pulse shaping is a widely adopted technique in which intensity and phase manipulation of optical spectral components allow synthesis of user-specified ultrashort pulse fields according to a Fourier transform relationship. Furthermore, mode-locked lasers producing combs of frequency-stabilized spectral lines have resulted in revolutionary ...
José Caraquitena +4 more
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Optical pulse shaping is a widely adopted technique in which intensity and phase manipulation of optical spectral components allow synthesis of user-specified ultrashort pulse fields according to a Fourier transform relationship. Furthermore, mode-locked lasers producing combs of frequency-stabilized spectral lines have resulted in revolutionary ...
José Caraquitena +4 more
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Spectral lines: In the line of duty
IEEE Spectrum, 1986Many of us did not know Judith Resnik or Gregory Jarvis personally. Yet there is pride for us in hearing the words ?Judith Resnik, electrical engineer?? and ?Gregory Jarvis, electrical engineer?.?
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The Formation of Spectral Lines
Annual Review of Astronomy and Astrophysics, 1971This review is addressed to the nonspecialist reader and is intended to provide an intro duction to the physi cs a nd ph enomenology of the radiation field in spectral lines. Results that give the maxi mum insight are stressed and selected , while technical details are suppr essed. Because of restrictions on space and because of the appearance or pr om
G. B. Rybicki, D. G. Hummer
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2020
The lattice vibration has many effects on spectroscopic properties of active ions in solids, including inducing of electric-dipole transition and vibronic-electronic transition, broadening of spectral line, shifting of spectral line position, introducing of non-radiative transition, and transforming of excited energy between ions.
Zundu Luo, Yidong Huang
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The lattice vibration has many effects on spectroscopic properties of active ions in solids, including inducing of electric-dipole transition and vibronic-electronic transition, broadening of spectral line, shifting of spectral line position, introducing of non-radiative transition, and transforming of excited energy between ions.
Zundu Luo, Yidong Huang
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Nature, 1973
Radiation Transport in Spectral Lines. By G. Athay. Pp. xiii + 263. (D. Reidel: Dordrecht, 1972.) 41 florins.
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Radiation Transport in Spectral Lines. By G. Athay. Pp. xiii + 263. (D. Reidel: Dordrecht, 1972.) 41 florins.
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1975
It is theoretically possible using the equations and data in Chapter III to predict the most sensitive transitions for each element. It is unfortunate that much of the information required for this theoretical exercise is woefully lacking in accuracy, (See Table III.B.1 for instance)thus rendering the theoretical prediction of analysis lines of ...
G. E. Bentley +2 more
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It is theoretically possible using the equations and data in Chapter III to predict the most sensitive transitions for each element. It is unfortunate that much of the information required for this theoretical exercise is woefully lacking in accuracy, (See Table III.B.1 for instance)thus rendering the theoretical prediction of analysis lines of ...
G. E. Bentley +2 more
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Widths and Profiles of Spectral Lines
1981Spectral lines in discrete absorption or emission spectra are never strictly monochromatic. Even with the very high resolution of interferometers one observes a spectral distribution I(v) of the absorbed or emitted intensity around the central frequency v 0 = (Ei-Ek)/h corresponding to a molecular transition with the energy difference ΔE = Ei-Ek ...
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Contemporary Physics, 1975
Abstract A spectral line emitted by an atom or molecule (throughout the article, spectral lines seen in emission ere described; however, the theory applies equally well to the absorption of radiation in plasmas) has a finite width and there are three distinct physical processes which contribute to this broadening.
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Abstract A spectral line emitted by an atom or molecule (throughout the article, spectral lines seen in emission ere described; however, the theory applies equally well to the absorption of radiation in plasmas) has a finite width and there are three distinct physical processes which contribute to this broadening.
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IEEE Spectrum, 1967