Non-Coherent Scattering: I. The Redistribution Function with Doppler Broadening
نویسندگان
چکیده
منابع مشابه
Neutrino 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 کاملDoppler redistribution of anisotropic radiation and resonance polarization in moving scattering media I. Theory revisited in the density matrix formalism
Under the light of recent developments of the theory of matter-radiation interaction in the presence of magnetic field applied to non-LTE spectropolarimetry in astrophysics, we have revisited the theory of anisotropic resonance line scattering in moving media by means of the density-matrix formulation. This has led us to present a theoretical method of determination of the matter velocity field...
متن کاملI-46: Obstetrical Doppler
Accurate assessment of gestational age, fetal growth, and the detection of fetal and placental abnormalities are major benefits of sonography. Color Doppler can be used to assist in the identification of vascular architecture, detection of vascular pathology and visualization of blood flow changes associated with physiologic processes and disease states. The clinical applications of obstetrical...
متن کاملRapid estimation of the range-Doppler scattering function
Under wide sense stationary uncorrelated scattering (WSSUS) conditions, the signal spreading due to a random channel may be described by the scattering function (SF). In an active acoustic system, the received signal is modeled as the superposition of delayed and Doppler spread replicas of the transmitted waveform. The SF completely describes the second-order statistics of a WSSUS channel and c...
متن کاملCorrelation Effects in the Theory of Combined Doppler and Pressure Broadening - I . Classical Theory
A classical Fourier amplitude theory of combined Doppler and pressure broadening in the impact approximation is developed which treats phase changes due to translation and collision on an equal basis. Radiator motion is accounted for properly by includingspeed dependence in the collision frequency and velocity dependence in the distribution function for phase shifts and final velocities as the ...
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: Monthly Notices of the Royal Astronomical Society
سال: 1962
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/125.1.21