Comprehensive rate coefficients for electron collision induced transitions in hydrogen
Daniel Vrinceanu, Roberto Onofrio, Hossein R. Sadeghpour
(Submitted on 18 Oct 2013)
Energy-changing electron-hydrogen atom collisions are crucial to regulating the
energy balance in astrophysical and laboratory plasmas and relevant to the
formation of stellar atmospheres, recombination in H-II clouds, primordial
recombination, three-body recombination and heating in ultracold and fusion
plasmas. Computational modeling of electron-hydrogen collision has been
attempted through quantum mechanical scattering state-to-state calculations of
transitions involving low-lying energy levels in hydrogen (with principal quantum
number n < 7) and at large principal quantum numbers using classical trajectory
techniques. Analytical expressions are proposed which interpolates the current
quantum mechanical and classical trajectory results for electron-hydrogen
scattering in the entire range of energy levels, for nearly all temperature range of
interest in astrophysical environments. An asymptotic expression for the Born
cross-section is interpolated with a modified expression derived previously for
electron-hydrogen scattering in the Rydberg regime using classical trajectory Monte
Carlo simulations. The derived formula is compared to existing numerical data for
transitions involving low principal quantum numbers, and the dependence of the
deviations upon temperature is discussed.
Comments: To appear in The Astrophysical Journal
Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM); Solar and
Stellar Astrophysics (astro-ph.SR); Plasma Physics (physics.plasm-ph)
Cite as: arXiv:1310.5164 [astro-ph.IM]
(or arXiv:1310.5164v1 [astro-ph.IM] for this version)
{
"status": "new",
"changetime": "2019-02-04T13:07:06Z",
"_ts": "1549285626580696",
"description": "{{{\nComprehensive rate coefficients for electron collision induced transitions in hydrogen\n\nDaniel Vrinceanu, Roberto Onofrio, Hossein R. Sadeghpour\n(Submitted on 18 Oct 2013)\n\nEnergy-changing electron-hydrogen atom collisions are crucial to regulating the \nenergy balance in astrophysical and laboratory plasmas and relevant to the \nformation of stellar atmospheres, recombination in H-II clouds, primordial \nrecombination, three-body recombination and heating in ultracold and fusion \nplasmas. Computational modeling of electron-hydrogen collision has been \nattempted through quantum mechanical scattering state-to-state calculations of \ntransitions involving low-lying energy levels in hydrogen (with principal quantum\n number n < 7) and at large principal quantum numbers using classical trajectory\n techniques. Analytical expressions are proposed which interpolates the current \nquantum mechanical and classical trajectory results for electron-hydrogen \nscattering in the entire range of energy levels, for nearly all temperature range of\n interest in astrophysical environments. An asymptotic expression for the Born \ncross-section is interpolated with a modified expression derived previously for \nelectron-hydrogen scattering in the Rydberg regime using classical trajectory Monte\n Carlo simulations. The derived formula is compared to existing numerical data for\n transitions involving low principal quantum numbers, and the dependence of the\n deviations upon temperature is discussed.\n\nComments:\tTo appear in The Astrophysical Journal\n\nSubjects:\tInstrumentation and Methods for Astrophysics (astro-ph.IM); Solar and \nStellar Astrophysics (astro-ph.SR); Plasma Physics (physics.plasm-ph)\n\nCite as:\tarXiv:1310.5164 [astro-ph.IM]\n \t(or arXiv:1310.5164v1 [astro-ph.IM] for this version)\n}}}",
"reporter": "gary",
"cc": "",
"resolution": "",
"time": "2013-10-26T01:21:11Z",
"component": "atomic/molecular data base",
"summary": "updated H electron collisions",
"priority": "good to do",
"keywords": "",
"version": "trunk",
"milestone": "no milestone",
"owner": "nobody",
"type": "enhancement"
}
reported by: @CloudyLex
Migrated from https://www.nublado.org/ticket/265