VI/148 Collision Strengths for [Co II] Forbidden Lines - SS4 (Storey+, 2016)
Collision strengths and transition probabilities for Co II infrared forbidden
lines .
Storey P.J., Zeippen C.J., Sochi T.
<Mon. Not. R. Astron. Soc. 456, 1974-1981 (2016)>
=2016MNRAS.456.1974S 2016MNRAS.456.1974S
=2016yCat.6148....0S 2016yCat.6148....0S
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes - radiation mechanisms: non-thermal -
supernovae: general - infrared: general
Abstract:
The list presents electron collision strengths for the forbidden
transitions between the fifteen lowest levels of the singly-ionized
cobalt, Co+, as a function of the electron energy, in an
intermediate coupling scheme using the Breit-Pauli relativistic terms
as implemented in an R-matrix atomic scattering code. An atomic target
for the R-matrix scattering defined by 26 atomic terms is used in
these calculations. The data are particularly useful for analyzing the
thermodynamic conditions of supernova ejecta.
Description:
The data set consists of 105 files which are labeled as
'OMEGAmn_CoII.dat' where m=1,2,...,14 and n=2,3,...,15 with m<n. The
indices m and n refer to the level index as given in the table below.
In each file the first column represents the electron energy in
Rydberg and the second column represents the collision strength for
the transition between the indicated levels.
-------------------------------------------------------
Level Index Level Designation
-------------------------------------------------------
1 [Ar] 3d8 a3F4
2 [Ar] 3d8 a3F3
3 [Ar] 3d8 a3F2
4 [Ar] 3d74s a5F5
5 [Ar] 3d74s a5F4
6 [Ar] 3d74s a5F3
7 [Ar] 3d74s a5F2
8 [Ar] 3d74s a5F1
9 [Ar] 3d74s b3F4
10 [Ar] 3d74s b3F3
11 [Ar] 3d74s b3F2
12 [Ar] 3d8 a1D2
13 [Ar] 3d8 a3P2
14 [Ar] 3d8 a3P1
15 [Ar] 3d8 a3P0
-------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
levels.dat 92 15 Levels
table7.dat 95 105 Thermally averaged collision strengths among the
15 energetically lowest levels as a function of
log10 of temperature in K
data/* . 105 Individual collision strength files
--------------------------------------------------------------------------------
See also:
VI/130 : High Accuracy Computed H2D+ Line List - ST1 (Sochi+, 2010)
VI/136 : Dielectronic Recombination Lines of C+ - SS1 (Sochi+, 2013)
VI/141 : Nebular [OIII] Optical and Infrared Lines - SSB (Storey+, 2014)
VI/142 : Hydrogen emission & recombination coefficients - SS2 (Storey+, 2014)
VI/144 : Effective Collision Strengths for nebular [OIII] - SS3 (Storey+, 2015)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: levels.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Index [1/15] Level index (m)
4- 25 A22 --- Level Level designation
27- 29 A3 --- Tran2 Transition for file with data for level 2 (1)
31- 33 A3 --- Tran3 Transition for file with data for level 3 (1)
35- 37 A3 --- Tran4 Transition for file with data for level 4 (1)
39- 41 A3 --- Tran5 Transition for file with data for level 5 (1)
43- 45 A3 --- Tran6 Transition for file with data for level 6 (1)
47- 49 A3 --- Tran7 Transition for file with data for level 7 (1)
51- 53 A3 --- Tran8 Transition for file with data for level 8 (1)
55- 57 A3 --- Tran9 Transition for file with data for level 9 (1)
59- 62 A4 --- Tran10 Transition for file with data for level 10 (1)
64- 68 A5 --- Tran11 Transition for file with data for level 11 (1)
70- 74 A5 --- Tran12 Transition for file with data for level 12 (1)
76- 80 A5 --- Tran13 Transition for file with data for level 13 (1)
82- 86 A5 --- Tran14 Transition for file with data for level 14 (1)
88- 92 A5 --- Tran15 Transition for fIle with data for level 15 (1)
--------------------------------------------------------------------------------
Note (1): Transition m_n for files labelled OMEGAmn_CoII.dat in subdirectory
data.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- i Lower level
4- 5 I2 --- j Upper level
7- 12 F6.3 --- CS2.0 Thermally averaged collision strength for
log10T=2.0K
14- 19 F6.3 --- CS2.2 Thermally averaged collision strength for
log10T=2.2K
21- 26 F6.3 --- CS2.4 Thermally averaged collision strength for
log10T=2.4K
28- 33 F6.3 --- CS2.6 Thermally averaged collision strength for
log10T=2.6K
35- 40 F6.3 --- CS2.8 Thermally averaged collision strength for
log10T=2.8K
42- 47 F6.3 --- CS3.0 Thermally averaged collision strength for
log10T=3.0K
49- 54 F6.3 --- CS3.2 Thermally averaged collision strength for
log10T=3.2K
56- 61 F6.3 --- CS3.4 Thermally averaged collision strength for
log10T=3.4K
63- 68 F6.3 --- CS3.6 Thermally averaged collision strength for
log10T=3.6K
70- 75 F6.3 --- CS3.8 Thermally averaged collision strength for
log10T=3.8K
77- 82 F6.3 --- CS4.0 Thermally averaged collision strength for
log10T=4.0K
84- 89 F6.3 --- CS4.2 Thermally averaged collision strength for
log10T=4.2K
91- 95 F5.3 --- CS4.4 Thermally averaged collision strength for
log10T=4.4K
--------------------------------------------------------------------------------
Byte-by-byte Description of file: data/*
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.9 Ry E(Ryd) Electron energy in Rydberg
13- 23 E11.5 --- Omega Collision strength (unitless)
--------------------------------------------------------------------------------
Acknowledgements:
P.J. Storey: University College London, pjs(at)star.ucl.ac.uk
C.J. Zeippen: Observatoire de Paris
Taha Sochi: University College London, t.sochi(at)ucl.ac.uk
History:
* 03-Feb-2016: On-line availability
* 13-Jun-2016: table 7 added, from electronic version
(End) Taha Sochi [University College London], Patricia Vannier [CDS] 02-Feb-2016