Radiation from Isolated Spectral Lines with Combined Doppler and Lorentz Broadening*
نویسندگان
چکیده
منابع مشابه
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA Radiation from Isolated Spectral Lines with Combined Doppler and Lorentz Broadening*
Thus P' represents the maximum value of the spectral absorption coefficient if only Doppler broadening occurred; b, bc, and bD denote, respectively, the natural half-width,t the half-width resulting from collision (Lorentz) broadening, and the half-width produced by Doppler broadening; S is the integrated intensity of the spectral line under study whose center lies at wo; m is the mass of the r...
متن کاملTurbulence Spectra from Doppler-shifted Spectral Lines
Turbulence is a key element of the dynamics of astrophysical fluids, including those of interstellar medium, clusters of galaxies and circumstellar regions. Turbulent motions induce Doppler shifts of observable emission and absorption lines. In the review we discuss new techniques that relate the spectra of underlying velocity turbulence and spectra of Doppler-shifted lines. In particular, the ...
متن کاملElectron Collisional Broadening of Isolated Lines from Multiply-ionized Atoms
Recent experimental and theoretical (both improved semiclassical and fully quantum-mechanical) line broadening calculations for B III and NeVII ∆n = 0 transitions with n = 2 and 3, respectively, are discussed. The disagreements by about a factor of 2 between the fully quantum-mechanically calculated and both measured and semiclassically calculated widths can be explained in terms of violations ...
متن کاملNeutrino Induced Doppler Broadening
When a nucleus undergoes beta decay via the electron capture reaction, it emits an electron neutrino. The neutrino emission gives a small recoil to the atom, which can be experimentally observed as a Doppler broadening on subsequently emitted gamma rays. Using the two-axis flat-crystal spectrometer GAMS4 and the electron capture reaction in (152)Eu, the motion of atoms having an excess kinetic ...
متن کاملSpectral broadening of ophthalmic arterial Doppler signals using STFT and wavelet transform
In this study, short-time Fourier transform (STFT) and wavelet transform (WT) were used for spectral analysis of ophthalmic arterial Doppler signals. Using these spectral analysis methods, the variations in the shape of the Doppler spectra as a function of time were presented in the form of sonograms in order to obtain medical information. These sonograms were then used to compare the applied m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Optical Society of America
سال: 1953
ISSN: 0030-3941
DOI: 10.1364/josa.43.000385