J/A+A/606/A147 Heavy particle-hydrogen collisions (Belyaev+, 2017)
Estimating inelastic heavy-particle-hydrogen collision data.
I. Simplified model and application to potassium-hydrogen collisions.
Belyaev A.K., Yakovleva S.A.
<Astron. Astrophys. 606, A147 (2017)>
=2017A&A...606A.147B 2017A&A...606A.147B (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes - stars: atmospheres
Abstract:
We derive a simplified model for estimating atomic data on inelastic
processes in low-energy collisions of heavy-particles with hydrogen,
in particular for the inelastic processes with high and moderate rate
coefficients. It is known that these processes are important for
non-LTE modeling of cool stellar atmospheres.
Rate coefficients are evaluated using a derived method, which is a
simplified version of a recently proposed approach based on the
asymptotic method for electronic structure calculations and the
Landau-Zener model for nonadiabatic transition probability
determination.
The rate coefficients are found to be expressed via statistical
probabilities and reduced rate coefficients. It turns out that the
reduced rate coefficients for mutual neutralization and ion-pair
formation processes depend on single electronic bound energies of an
atom, while the reduced rate coefficients for excitation and
de-excitation processes depend on two electronic bound energies. The
reduced rate coefficients are calculated and tabulated as functions of
electronic bound energies. The derived model is applied to
potassium-hydrogen collisions. For the first time, rate coefficients
are evaluated for inelastic processes in K+H and K+ + H-
collisions for all transitions from ground states up to and including
ionic states.
Description:
Rate coefficients in cm3%/s for neutralization and de-excitation
processes in heavy-particle collisions with hydrogen for temperatures
from T=1000K to T=10000K.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
n1000.dat 20 81 Neutralization rate coefficients at T=1000K
n2000.dat 20 81 Neutralization rate coefficients at T=2000K
n3000.dat 20 81 Neutralization rate coefficients at T=3000K
n4000.dat 20 81 Neutralization rate coefficients at T=4000K
n5000.dat 20 81 Neutralization rate coefficients at T=5000K
n6000.dat 20 81 Neutralization rate coefficients at T=6000K
n7000.dat 20 81 Neutralization rate coefficients at T=7000K
n8000.dat 20 81 Neutralization rate coefficients at T=8000K
n9000.dat 20 81 Neutralization rate coefficients at T=9000K
n10000.dat 20 81 Neutralization rate coefficients at T=10000K
d1000.dat 420 41 De-excitation rate coefficients at T=1000K
d2000.dat 420 41 De-excitation rate coefficients at T=2000K
d3000.dat 420 41 De-excitation rate coefficients at T=3000K
d4000.dat 420 41 De-excitation rate coefficients at T=4000K
d5000.dat 420 41 De-excitation rate coefficients at T=5000K
d6000.dat 420 41 De-excitation rate coefficients at T=6000K
d7000.dat 420 41 De-excitation rate coefficients at T=7000K
d8000.dat 420 41 De-excitation rate coefficients at T=8000K
d9000.dat 420 41 De-excitation rate coefficients at T=9000K
d10000.dat 420 41 De-excitation rate coefficients at T=10000K
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See also:
J/A+A/572/A103 : Inelastic silicon-hydrogen collision data (Belyaev+, 2014)
J/MNRAS/449/3323 : (Li-He)+ collisions non-radiative processes
(Belyaev+, 2015)
J/A+A/587/A114 : Inelastic calcium-hydrogen collision data (Belyaev+, 2016)
J/A+A/593/A27 : Inelastic beryllium-hydrogen collision data
(Yakovleva+, 2016)
Byte-by-byte Description of file: n*.dat
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Bytes Format Units Label Explanations
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1- 10 E10.2 eV Ef Electron bound energy for the final state
11- 20 E10.2 cm3/s RC Neutralization rate coefficient for transition
to state Ef
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Byte-by-byte Description of file: d*.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 E10.2 eV Ei Electron bound energy for the initial state
11- 20 E10.2 cm3/s RC1 De-excitation rate coefficient for transition
to state Ef=-5.001eV
21- 30 E10.2 cm3/s RC2 De-excitation rate coefficient for transition
to state Ef=-4.901eV
31- 40 E10.2 cm3/s RC3 De-excitation rate coefficient for transition
to state Ef=-4.801eV
41- 50 E10.2 cm3/s RC4 De-excitation rate coefficient for transition
to state Ef=-4.701eV
51- 60 E10.2 cm3/s RC5 De-excitation rate coefficient for transition
to state Ef=-4.601eV
61- 70 E10.2 cm3/s RC6 De-excitation rate coefficient for transition
to state Ef=-4.501eV
71- 80 E10.2 cm3/s RC7 De-excitation rate coefficient for transition
to state Ef=-4.401eV
81- 90 E10.2 cm3/s RC8 De-excitation rate coefficient for transition
to state Ef=-4.301eV
91-100 E10.2 cm3/s RC9 De-excitation rate coefficient for transition
to state Ef=-4.201eV
101-110 E10.2 cm3/s RC10 De-excitation rate coefficient for transition
to state Ef=-4.101eV
111-120 E10.2 cm3/s RC11 De-excitation rate coefficient for transition
to state Ef=-4.001eV
121-130 E10.2 cm3/s RC12 De-excitation rate coefficient for transition
to state Ef=-3.901eV
131-140 E10.2 cm3/s RC13 De-excitation rate coefficient for transition
to state Ef=-3.801eV
141-150 E10.2 cm3/s RC14 De-excitation rate coefficient for transition
to state Ef=-3.701eV
151-160 E10.2 cm3/s RC15 De-excitation rate coefficient for transition
to state Ef=-3.601eV
161-170 E10.2 cm3/s RC16 De-excitation rate coefficient for transition
to state Ef=-3.501eV
171-180 E10.2 cm3/s RC17 De-excitation rate coefficient for transition
to state Ef=-3.401eV
181-190 E10.2 cm3/s RC18 De-excitation rate coefficient for transition
to state Ef=-3.301eV
191-200 E10.2 cm3/s RC19 De-excitation rate coefficient for transition
to state Ef=-3.201eV
201-210 E10.2 cm3/s RC20 De-excitation rate coefficient for transition
to state Ef=-3.101eV
211-220 E10.2 cm3/s RC21 De-excitation rate coefficient for transition
to state Ef=-3.001eV
221-230 E10.2 cm3/s RC22 De-excitation rate coefficient for transition
to state Ef=-2.901eV
231-240 E10.2 cm3/s RC23 De-excitation rate coefficient for transition
to state Ef=-2.801eV
241-250 E10.2 cm3/s RC24 De-excitation rate coefficient for transition
to state Ef=-2.701eV
251-260 E10.2 cm3/s RC25 De-excitation rate coefficient for transition
to state Ef=-2.601eV
261-270 E10.2 cm3/s RC26 De-excitation rate coefficient for transition
to state Ef=-2.501eV
271-280 E10.2 cm3/s RC27 De-excitation rate coefficient for transition
to state Ef=-2.401eV
281-290 E10.2 cm3/s RC28 De-excitation rate coefficient for transition
to state Ef=-2.301eV
291-300 E10.2 cm3/s RC29 De-excitation rate coefficient for transition
to state Ef=-2.201eV
301-310 E10.2 cm3/s RC30 De-excitation rate coefficient for transition
to state Ef=-2.101eV
311-320 E10.2 cm3/s RC31 De-excitation rate coefficient for transition
to state Ef=-2.001eV
321-330 E10.2 cm3/s RC32 De-excitation rate coefficient for transition
to state Ef=-1.901eV
331-340 E10.2 cm3/s RC33 De-excitation rate coefficient for transition
to state Ef=-1.801eV
341-350 E10.2 cm3/s RC34 De-excitation rate coefficient for transition
to state Ef=-1.701eV
351-360 E10.2 cm3/s RC35 De-excitation rate coefficient for transition
to state Ef=-1.601eV
361-370 E10.2 cm3/s RC36 De-excitation rate coefficient for transition
to state Ef=-1.501eV
371-380 E10.2 cm3/s RC37 De-excitation rate coefficient for transition
to state Ef=-1.401eV
381-390 E10.2 cm3/s RC38 De-excitation rate coefficient for transition
to state Ef=-1.301eV
391-400 E10.2 cm3/s RC39 De-excitation rate coefficient for transition
to state Ef=-1.201eV
401-410 E10.2 cm3/s RC40 De-excitation rate coefficient for transition
to state Ef=-1.101eV
411-420 E10.2 cm3/s RC41 De-excitation rate coefficient for transition
to state Ef=-1.001eV
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Acknowledgements:
A.K. Belyaev, andrey.k.belyaev(at)gmail.com
(End) Andrey Belyaev [Herzen University], Patricia Vannier [CDS] 13-Jul-2017