Results 171 to 180 of about 2,431 (219)
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Relativistic effect of atomic radiative processes
Physical Review A, 1994We present a theoretical study of the relativistic effect of atomic radiative processes. In order to avoid any entanglement of the atomic screening effect, we would like to elucidate the relativistic effect of the atomic radiative processes by examining the radiative processes of the hydrogenlike atomic ion system.
, Tong, , Liu, , Li
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Elementary radiative processes
2007Abstract In this introductory chapter, we consider the elementary radiative processes for both free atomic particles (atoms, ions, and molecules) and particles interacting with a monochromatic laser field. For more advanced considerations, the reader is advised to refer to the classical textbooks (Loudon 1973; Sargent et al.
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Tunnelling contribution in non-radiative processes
Solid State Communications, 1983Abstract A semiclassical formalism, already introduced to treat non-radiative processes in multidimensional spaces, has been extended to compute total non-radiative transition rates. A simple approximate analysis results in simple formulae which discriminate between quantum-tunnelling contributions and classical ones.
R Englman +3 more
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Radiative Processes in Plasmas
2009All plasmas emit and absorb electromagnetic radiation and Fig. 6.1 shows, as an example, the characteristics of the emission spectrum of a dense laboratory hydrogen plasma with some impurities at the electron temperature of k B T e = 10 eV. The dashed line is the blackbody limit drawn for comparison.
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Radiative Processes in Astrophysics
Physics Bulletin, 1980George B Rybicki and Alan P Lightman 1980 Chichester: John Wiley xv + 382 pp price £19 The interaction of radiation with matter is a subject of fundamental importance in astrophysics. It is far from being an easy one to teach, not the least of the problems being the lack of suitable texts in this area.
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Radiative and non-radiative processes in jet-cooled NCNO
Chemical Physics Letters, 1987Abstract Lifetimes of excited vibronic levels in NCNO are measured both by LIF and by monitoring excited state absorptions. Fluorescence lifetimes are longer than S 1 radiative lifetimes at all wavelengths between the band origin (11339 cm −1 ) and D o (17085 cm −1 ).
C.X.W. Qian, H. Reisler, C. Wittig
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Nonradiative and Radiative Recombination Processes of ZnS Epitaxial Layers
physica status solidi (a), 2002Room temperature photoluminescence (PL) and piezoelectric photothermal (PPT) spectroscopy were successfully performed on two different ZnS epitaxial layers grown by pyrolytic MOVPE on GaAs(100) by using diethyldisulphide (Et2S2) as sulphur precursor at 390 °C and 435 °C.
K. Yoshino +7 more
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Zitterbewegung in Radiative Processes
1991The zitterbewegung is a local circulatory motion of the electron presumed to be the basis of the electron spin and magnetic moment. A reformulation of the Dirac theory shows that this interpretation can be sustained rigorously, with the complex phase factor in the wave function describing the local frequency and phase of the circulatory motion directly.
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Radiative and non-radiative processes in p-benzoquinone vapour
Molecular Physics, 1985Emission and excitation spectra of p-benzoquinone vapour have been measured at the pressure range from 0·2 to 3 Torr as well as at high total pressure (∼ 100 Torr) in the presence of an added foreign gas. It is shown that p-benzoquinone vapour excited into 1 B 3g (π, π*) exhibits fluorescence from high vibrational levels in the 1 B 1g (n, π*) state in ...
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