Results 1 to 10 of about 6,084,559 (245)
Collision Strengths and Effective Collision Strengths for Allowed Transitions among the n ≤ 5 Degenerate Levels of Atomic Hydrogen [PDF]
Atoms, 2018 We report calculations of collision strengths and effective collision strengths for 26 allowed transitions among the n≤ 5 degenerate levels of atomic hydrogen for which the close-coupling (CC) and Born approximations have been used. Results are listed
Kanti M. Aggarwal +2 more
doaj +5 more sources
Collision strengths and effective collision strengths for Ne-like Ge [PDF]
Canadian Journal of Physics, 2017 We have carried out a calculation of 241 levels for Ne-like Ge (Z = 36) to calculate electron impact collision strengths and effective collision strengths belonging to 1s22s22p5nl, 1s22s12p6nl (n = 3, 4, 5, 6; l = s, p, d, f, g, and h) configurations, which have been calculated by the fully relativistic flexible atomic code (FAC).
Wessameldin S Abdelaziz
exaly +4 more sources
Effective collision strengths for transitions of Ni XVII
Journal of Physics: Conference Series, 2009 Electron impact excitation collision strengths are required for the analysis and interpretation of stellar observations. This calculation aims to provide fine structure effective collision strengths for the Nixvii ion using a method which includes contributions from resonances. A DARC calculation has been performed, involving 37 Jπ states.
C E Hudson +2 more
exaly +3 more sources
Astrophysical Journal, 2012 We have carried out a 29-state R-matrix calculation in order to calculate collision strengths and effective collision strengths for the electron impact excitation of S III. The recently developed parallel RMATRX II suite of codes have been used, which perform the calculation in intermediate coupling.
M P Scott, C A Ramsbottom
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Effective collision strengths for transitions in Fe X [PDF]
Astronomy & Astrophysics, 2003 Effective collision strengths for transitions among the lowest 97 fine-structure levels belonging to the (1s 2 2s 2 2p 6 ) 3s 2 3p 2 ,3 s3p 3 ,3 s 2 3p3d, 3p 4 ,3 s3p 2 3d and 3s 2 3d 2 configurations of Fe XIII have been calculated using the fully relativistic Dirac Atomic R-matrix Code (DARC) of Norrington & Grant (2004).
Keenan, Francis, Aggarwal, Kanti
openaire +4 more sources
Effective collision strengths for O II
Astrophysical Journal, 1993 Accurate electron collisional excitation strengths Ω, from 11 state R-matrix calculations performed in LSπ coupling, are convoluted with a Maxwellian velocity distribution to obtain effective collision strengths γ for a range of temperatures 5×10 3 K to 10 6 K for electron excitation of singly ionized atomic oxygen.
Brenda M. McLaughlin, Kenneth L. Bell
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Toward Autonomous UAV Swarm Navigation: A Review of Trajectory Design Paradigms [PDF]
SensorsThe development of efficient and reliable trajectory-planning strategies for swarms of unmanned aerial vehicles (UAVs) is an increasingly important area of research, with applications in surveillance, search and rescue, smart agriculture, defence ...
Kaleem Arshid +4 more
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Effective collision strengths for transitions in O III
Astrophysical Journal, Supplement Series, 1993 Effective collision strengths for transitions among 26 LS-coupled states of the (1s 2 ) 2s 2 2p 2 , 2s2p 3 , 2p 4 , 2s 2 2p3s, 2s 2 2p3p, and 2s 2 2p3d configurations of O III are reported in a wide electron temperature range of 2500-200,000 K. Collision strengths for these transitions have been computed at energies below 13.1 Ry in a fine mesh of ...
K M Aggarwal
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Collision Strengths of Astrophysical Interest for Multiply Charged Ions
Atoms, 2023 The electron impact excitation and ionization processes are crucial for modeling the spectra of different astrophysical objects, from atmospheres of late-type stars to remnants of supernovae and up to the light emission from neutron star mergers, to name
Stephan Fritzsche +3 more
doaj +1 more source
Effective collision strengths for Si II [PDF]
Monthly Notices of the Royal Astronomical Society, 1989 Collision strengths are presented for electron impact excitation among the eight lowest LS states (corresponding to 15 levels including the splitting of the doublet and quartet terms) of Si II calculated using the R-matrix method. These collision strengths are used to deduce effective collision strengths, adopting a Maxwellian electron energy ...
P. L. Dufton, A. E. Kingston
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