Results 271 to 280 of about 3,253,485 (320)
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1986
The absorption of radiation by a molecule and the consequent change of the molecule’s dynamic energy by a discrete amount, as discussed in connection with spectral lines in Chapters 2 and in 3.1, is a resonant and inelastic scattering process: resonant because the photon energy has to fit exactly the energy jump W n − W m of the molecule from a lower ...
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The absorption of radiation by a molecule and the consequent change of the molecule’s dynamic energy by a discrete amount, as discussed in connection with spectral lines in Chapters 2 and in 3.1, is a resonant and inelastic scattering process: resonant because the photon energy has to fit exactly the energy jump W n − W m of the molecule from a lower ...
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Scattering of electromagnetic radiation
2023Abstract In this chapter we discuss the scattering of electromagnetic waves by charged particles. We define the scattering cross-section. We then consider the scattering of electromagnetic waves from free electrons, giving rise to the Thomson cross section, expressed in terms of the classical electron radius.
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Radiation Scattering techniques
1986The previous chapter dealt in detail with industrial applications of measurements of gamma-ray absorption for the purposes of determining levels in vessels, thicknesses of materials, density profiles and so on. In the main, these gamma-ray absorption techniques are the simplest and most flexible to employ on industrial plant.
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2012
Introduction Electromagnetic radiation can be considered as a stream of photons moving at the speed of light. These photons have no mass and can be treated as waves. There is a spectrum of electromagnetic radiation, ranging from low-energy radiowaves to high energy γ-rays; this spectrum...
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Introduction Electromagnetic radiation can be considered as a stream of photons moving at the speed of light. These photons have no mass and can be treated as waves. There is a spectrum of electromagnetic radiation, ranging from low-energy radiowaves to high energy γ-rays; this spectrum...
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2000
The preceding chapters have dealt with radiative heat transfer in nonscattering media only. This assumption is justifiable for many engineering radiative heat transfer calculations where the system under consideration is not to depart arbitrarily far from the non-scattering assumption.
Aristide Mbiock, Roman Weber
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The preceding chapters have dealt with radiative heat transfer in nonscattering media only. This assumption is justifiable for many engineering radiative heat transfer calculations where the system under consideration is not to depart arbitrarily far from the non-scattering assumption.
Aristide Mbiock, Roman Weber
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Electromagnetic Wave Propagation, Radiation, and Scattering: From Fundamentals to Applications
, 2017A. Ishimaru
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Electromagnetic Radiation Inverse Scattering
1997Abstract : The report is divided into four parts. Part one is about nonlinear microwave amplification and the further use of nonlinear Schroedinger equations to model amplifiers. Part two is about speeds of frequency components of electromagnetic pulses, and a related inversion method.
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Scatter radiation in mammography.
Australasian physical & engineering sciences in medicine, 1993Current information pertinent to scatter radiation for mammographic x-ray spectra is limited. Data presented by the National Council on Radiation Protection and Measurements (NCRP), the current shielding authority, are restricted to 50 kVp tungsten target spectra and contain several incompatibilities with the modern mammographic situation. The ratio of
R J, Simeoni, D L, Thiele
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