Stark broadening of Ba I and Ba II spectral lines
نویسندگان
چکیده
منابع مشابه
Strongly perturbed Stark states and electron correlation in Ba
We present the results of experimental and theoretical investigations into the photoionization spectra of Ba Stark states at energies resonant with the 5d7d D2 perturber level starting from the 5d6p D1 o state. The electric field is strong enough to allow the electrons to classically escape the atom, thus transforming the perturber state into a resonance. Much of the dynamics of this remarkably...
متن کاملSpeech Enhancement Ba Perceptual Enhancemen Spectral Atten
The present paper introduces a cooperating framework between Perceptual Enhancement (PE) and Minimum Mean Square Error Log-Spectral Amplitude Estimation (MMSE-LSA). The link between the two aforementioned spectral modification algorithms is a Speech Absence Probability (SAP) responsible for weighting the fusion of both spectral gain modification algorithms for each spectral bin. It has been not...
متن کاملCore-polarization Effects for the Stark Broadening of Pb III Spectral Lines: Predictions and Regularities
Using a semi-classical approach, we have calculated values of the Stark broadening parameters for several lines of Pb III. Stark widths and shifts are presented for an electron density of 1017 cm– 3 and temperatures T = 11000-100000 K. In this work, we have carried out a study of the influence of the introduction of the terms that allow us to take into account the Core Polarization (CP) effects...
متن کاملStark Broadening of A III and AIV Lines*
The half-widths of five A III and two A I V lines have been measured in a pulsed arc operated in an argon-nitrogen mixture. Electron densities of 3.8 to 8.0 x 1016 c m 3 were determined by laser interferometry at a single wavelength while electron temperatures from 20750° to 23100 ° K were measured from the relative intensities of A l l lines. The experimental A III and A I V Stark profile half...
متن کاملStark Broadening of Hydrogenic Spectral Lines by Langmuir Turbulence in Magnetic Fusion Plasmas: Diagnostic Possibilities
We derive the dynamical Stark width and shift of hydrogenic spectral lines caused by Langmuir turbulence in magnetic fusion plasmas. We show that this additional broadening mechanism can dominate over the Stark broadening by the plasma microfield, theories of the latter broadening being also discussed. We also derive conditions necessary for Langmuir-wave-caused dips/depressions to occur in 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: Astronomy and Astrophysics Supplement Series
سال: 1997
ISSN: 0365-0138,1286-4846
DOI: 10.1051/aas:1997299