Results 221 to 230 of about 44,711 (268)
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Coulomb broadened spectral resonances
AIP Conference Proceedings, 1990Both theoretical and experimental results on spectral line broadening due to Coulomb scattering with velocity change are presented. The dependences of the Lamb dip width on the electron concentration and ionic charge have been tested for the argon‐ion‐laser lines at 501.7, 488.0, 363.8, and 351.1 nm.
S. A. Babin, D. A. Shapiro
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Resonance-level broadening by environmental fluctuations
Physical Review B, 1991The influence of the fluctuations of the electromagnetic environment on resonant tunneling is investigated in a rigorous way. Resonance-level broadening is found to be governed by the environmental impedance and temperature. It is found that the high-frequency limit of resonant tunneling devices is determined by the discharging time of the whole ...
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Resonance broadening in the spectrum of potassium
Journal of Physics B: Atomic and Molecular Physics, 1971The self broadening of three doublets in the spectrum of potassium at low densities was investigated in emission from weak dc and rf discharges. The use of a double recording Fabry-Perot interferometer allowed an accurate measurement of the ratio of the broadening constants of the doublet resonance levels to be made. The value obtained 1.54+or-0.09, is
E L Lewis, M M Rebbeck, J M Vaughan
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Density dependence in resonance broadening
Physics Letters A, 1970Abstract A relaxation theory treatment of resonance broadening yields a line width containing a constant term and a density dependent term, the former term being responsible for the anamolous low density observations.
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Resonance Broadening of Absorption Lines
Physical Review, 1967A general theory of line broadening is used to study the effects of collisions on absorption line shapes when self-broadening is important. Special attention is focused on the role of processes in which an excited atom transfers its electronic excitation to an unexcited atom; it is this process which distinguishes self-broadening from foreign-gas ...
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Broadening of a valence autoionization resonance in electric fields
Physical Review A, 1985We have observed a doubly excited autoionization resonance to broaden with increasing electric field. This broadening is consistent with the quadratic field dependence predicted by a simple perturbative model, but the magnitude of the observed broadening is about four times larger than predicted. Possible reasons for this discrepancy are discussed.
, Kelleher, , Delpech, , Weiner
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Resonance Broadening of Spectral Lines
Physical Review, 1960A formalism introduced previously is used to calculate the shape of an absorption line in a gas, considering the "resonance" interaction between like atoms. The most serious approximation is the neglect of the effect of translational motion. An asyrnmetric line is obtained, with the maximum shifted slightly toward the red.
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Anharmonic Broadening of Resonant Modes
physica status solidi (b), 1968AbstractIn order to describe the strong temperature dependence of the infrared absorption of Cu+ in NaCI a model is investigated in which the Cu+ is coupled to its nearest neighbours by harmonic and cubic anharmonic forces. The problem is solved by means of retarded Green's functions solving a Dyson equation with a mass operator of second order in the ...
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Resonance Broadening in Concentric Coupled Resonators based Metamaterials
2019 URSI Asia-Pacific Radio Science Conference (AP-RASC), 2019Metamaterials have demonstrated tremendous potential in applications such as sensing, polarization conversion [1], electromagnetic wave modulation [2] and cloaking etc. particularly in relatively unexplored terahertz region lying between microwave and infrared domains. Split ring resonators build the lattice of metamaterials.
Deepak Kumar +4 more
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Resonant rotational broadening of nuclear magnetic resonance spectra
Physics Letters, 1966Abstract A new resonant line-broadening effect is predicted in the nuclear magnetic resonance spectrum of a solid rapidly rotated at the magic angle at certain frequencies of rotation. The effect has been found in solid phosphorus pentachloride.
E.R. Andrew +4 more
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