J/MNRAS/436/1452 Electron impact for OV and OVI levels (Elabidi+, 2013)
Excitation cross sections by electron impact for O V and O VI levels.
Elabidi H., Sahal-Brechot S.
<Mon. Not. R. Astron. Soc. 436, 1452 (2013)>
=2013MNRAS.436.1452E 2013MNRAS.436.1452E
ADC_Keywords: Atomic physics ; Sun
Keywords: atomic data - plasmas - scattering - Sun: transition region
Abstract:
Radiative atomic and electron impact excitation data for OV and OVI
ions have been calculated. The radiative atomic data have been
calculated with the AUTOSTRUCTURE code. Besides the one-body and the
two-body fine structure interactions, the two-body non-fine structure
operators of the Breit-Pauli Hamiltonian, namely contact spin-spin,
two-body Darwin and orbit-orbit are incorporated in AUTOSTRUCTURE. The
scattering problem has been treated in the Breit-Pauli distorted wave
approximation using the same code AUTOSTRUCTURE. The OV atomic
calculations have been extended from 46 to 92 levels. We have
calculated excitation cross sections for the OV 2s2-2s2p and the
OVI 2s-2p transitions at energies near the corresponding excitation
threshold regions. We have also calculated collision strengths for
transitions from the most important levels for collisional excitation
at electron energies up to 120Ry for OV and up to 140Ry for OVI.
Our results have been compared with the available
theoretical/experimental ones and a satisfactory agreement have been
found between them.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 76 62 OV present energy levels compared with NIST,
other theoretical results, and experimental ones
table4.dat 56 52 OV oscillator strengths and radiative decay rates
from levels 1-4 to the first 47 levels
table5.dat 38 51 OV oscillator strengths and radiative decay rates
from levels 1-4 to levels 47-92
table6.dat 43 57 OV collision strengths, from 1s22s2 1S0 and
1s22s2p 3P0o levels to the 30 lowest levels
table7.dat 43 53 OV collision strengths, from the
1s22s2p (3P1o, 3P2o) levels
table8.dat 64 24 OVI present energies compared to other results
table9.dat 59 143 OVI oscillator strengths and radiative decay rates
table10.dat 67 23 OVI collision strengths, from the ground level
1s22s 2S1/2
table11.dat 67 43 OVI collision strengths, from levels
1s22p (2Po1/2,2Po3/2)
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See also:
J/A+AS/109/551 : Stark broadening. XII. OIV + OV (Dimitrijevic+, 1995)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Index [1/62] Index for each level (1)
4- 11 A8 --- conf Electronic configuration
13- 18 A6 --- level Level
21- 31 F11.4 cm-1 E The present energy
33- 40 F8.1 cm-1 NIST ? Energy form NIST (G1)
42- 47 I6 cm-1 Hib80 ? Energy from (Hibbert A., 1980, J. phys. B:
At. Mol. Phys., 13, 1721)
49- 59 F11.4 cm-1 BP ? Breit-Pauli energy (Froese Fischer C.,
Tachiev G., 2004, ADNDT, 87, 1)
61- 76 F16.6 cm-1 Exp ? Experimental energy (Bockasten K.,
Johansson K. B., 1968, Ark. Fys., 37, 563)
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Note (1): it will be used in the next tables for radiative data and
collision strengths.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1 I1 --- i [1/4] Lower level of transition (table1 Index)
2 A1 --- --- [-]
3- 4 I2 --- j [3/47] Upper level of transition (table1)
6- 12 F7.5 --- f Present oscillator strength (f_ij)
14- 20 F7.5 --- f-NIST ?=- Oscillator strength f_ij from NIST (G1)
22- 28 F7.5 --- f-BP ?=- Breit-Pauli oscillator strength f_ij
(Froese Fischer C., Tachiev G., 2004,
ADNDT, 87, 1)
30- 38 E9.4 s-1 A Present radiative decay rates (A_ij)
40- 47 E8.4 s-1 A-NIST ?=- Radiative decay rate A_ij from NIST (G1)
49- 56 E8.4 s-1 A-Hib80 ?=- Radiative decay rate A_ij from Hibbert A.
(1980, J. phys. B: At. Mol. Phys., 13, 1721)
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1 I1 --- i [1/4] Lower level of transition (table1 Index)
2 A1 --- --- [-]
3- 4 I2 --- j [48/92] Upper level of transition (table1)
6- 12 F7.5 --- f Present oscillator strength (f_ij)
14- 19 F6.4 --- f-NIST ?=- Oscillator strength f_ij from NIST (G1)
21- 29 E9.4 s-1 A Present radiative decay rate (A_ij)
31- 38 E8.4 s-1 A-NIST ?=- Radiative decay rate A_ij from NIST (G1)
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Byte-by-byte Description of file: table[67].dat
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Bytes Format Units Label Explanations
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1 I1 --- i [1/4] Lower level of transition (index in table1)
2 A1 --- --- [-]
3- 4 I2 --- j [2/30] Upper level of transition (index in table1)
6- 13 E8.4 --- CS20Ry Present collision strength at electron energy
E=20Ry
15- 23 E9.4 --- CS40Ry Present collision strength at electron energy
E=40Ry
25- 33 E9.4 --- CS80Ry Present collision strength at electron energy
E=80Ry
35- 43 E9.4 --- CS160Ry Present collision strength at electron energy
E=160Ry
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Index [1/24] Index for each level (1)
4- 9 A6 --- Conf Electronic configuration
11- 18 A8 --- level Level
20- 30 F11.4 cm-1 E The present energy
32- 39 F8.1 cm-1 NIST Energy from NIST (G1)
41- 51 F11.4 cm-1 GRASP GRASP energy (Aggarwal K.M., Keenan F.P.,
2004, Phys. Scr., 70, 222)
53- 64 F12.5 cm-1 CIV3 CIV3 energy (Tayal S., 2003ApJ...582..550T 2003ApJ...582..550T)
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Note (1): it will be used in the next tables for collision strengths.
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- i [1/20] Lower level of transition (table8 Index)
3 A1 --- --- [-]
4- 5 I2 --- j [2/24] Upper level of transition (table8)
7- 13 F7.5 --- f Present oscillator strength (f_ij)
15- 20 F6.4 --- f-NIST ?=- Oscillator strength f_ij from NIST (G1)
22- 28 F7.5 --- f-GRASP GRASP Oscillator strength f_ij (Aggarwal K.M.,
Keenan F.P., 2004, Phys. Scr., 70, 222)
30- 38 E9.4 s-1 A Present radiative decay rate (A_ij)
40- 48 E9.4 s-1 A-NIST ?=- Radiative decay rate A_ij from NIST (G1)
50- 59 A10 s-1 A-GRASP GRASP radiative decay rate A_ij (Aggarwal K.M.,
Keenan F.P., 2004, Phys. Scr., 70, 222)
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Byte-by-byte Description of file: table1[01].dat
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Bytes Format Units Label Explanations
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1 I1 --- i [1/3] Lower level of transition (table8 Index)
2 A1 --- --- [-]
3- 4 I2 --- j [2/24] Upper level of transition (table8)
6- 13 E8.4 --- CS15 Present collision strength at electron energy
15Ry
15- 22 E8.4 --- CS15D DARC collision strength at electron energy
15Ry (1)
24- 31 E8.4 --- CS45 Present collision strength at electron energy
45Ry
33- 40 E8.4 --- CS45D DARC collision strength at electron energy
45Ry (1)
42- 49 E8.4 --- CS63 Present collision strength at electron energy
63Ry
51- 58 E8.4 --- CS63D DARC collision strength at electron energy
63Ry (1)
60- 67 E8.4 --- CS140D Present collision strength at electron energy
140Ry
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Note (1): R-matrix DARC results (Aggarwal & Keenan, 2004, Phys. Scr., 70, 222).
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Global notes:
Note (G1): Ralchenko Yu.V., Kramida A.E., Reader J. and NIST ASD Team (2011).
http://physics.nist.gov
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Acknowledgements:
Haykel Elabidi, haelabidi(at)uqu.edu.sa
(End) H. Elabidi [Umm al-Qura Univ., KSA], P. Vannier [CDS] 19-Nov-2013