منابع مشابه
Energy approach to consistent QED theory for calculation of electron-collision strengths: Ne-like ions.
An energy approach based on consistent QED theory is outlined which presents the energy of any decaying atomic state in complex form with the imaginary part responsible for different types of decays. The aim is to study, in a uniform manner, elementary processes responsible for emission-line formation in plasmas. The energy approach is generalized here for the collisional problem. Numerical res...
متن کاملElectron-impact excitation of Sc II: collision strengths and effective collision strengths for fine-structure transitions
Accurate fine-structure atomic data for the Fe-peak elements are essential for interpreting astronomical spectra. There is a severe paucity of data available for Sc II, highlighted by the fact that no collision strengths are readily available for this ion. We present electron-impact excitation collision strengths and Maxwellian averaged effective collision strengths for Sc II. The collision str...
متن کاملAtomic data from the Iron Project . LXIV . Radiative transition rates and collision strengths for Ca ii ⋆
Aims. This work reports radiative transition rates and electron impact excitation rate coefficients for levels of the n= 3, 4, 5, 6, 7, 8 configurations of Ca ii. Methods. The radiative data were computed using the Thomas-Fermi-Dirac central potential method in the frozen core approximation and includes the polarization interaction between the valence electron and the core using a model potenti...
متن کاملDa Ne Setup and Operation with the Crab-waist Collision Scheme
In the second half of 2007 a major upgrade has been implemented on the Frascati DA NE collider in order to test the novel idea of Crab-Waist collisions. New vacuum chambers and permanent quadrupole magnets have been designed, built and installed to realize the new configuration. At the same time the performances of relevant hardware components, such as fast injection kickers and shielded bellow...
متن کاملElectron detachment of H in collision with Ne and Ar ions
Total-electron detachment cross sections for H colliding with multiply charged Ne and Ar ions are calculated using the two-center atomic-orbital close-coupling expansion method in the center-of-mass energy range of 4–200 keV. The calculation shows that there is no core effect, and that electron capture only plays a minor role for energies above 20 keV. At 50 keV, where electron capture is not i...
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: 1979
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/187.1.49p