J/A+A/427/763 FeX E1, E2, M1 and M2 transitions (Aggarwal+, 2004)
Radiative rates for E1, E2, M1 and M2 transitions in Fe X.
Aggarwal K.M., Keenan F.P.
<Astron. Astrophys. 427, 763 (2004)>
=2004A&A...427..763A 2004A&A...427..763A
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Abstract:
Energies of the 54 levels belonging to the (1s22s22p6)
3s23p5, 3s3p6, 3s23p43d and 3s3p53d configurations of FeX
have been calculated using the GRASP code of Dyall et al. (1989,
Comput. Phys. Commun, 55, 424). Additionally, radiative rates,
oscillator strengths, and line strengths are calculated for all
electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2),
and magnetic quadrupole (M2) transitions among these levels.
Comparisons are made with results available in the literature, and the
accuracy of the data is assessed. Our energy levels are estimated to
be accurate to better than 3%, whereas results for other parameters
are probably accurate to better than 20%. Additionally, the agreement
between measured and calculated lifetimes is better than 10%.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 72 54 Target levels of Fe X and their threshold energies
table2.dat 45 460 Transition energies (Å), oscillator strengths,
radiative rates (s-1), and line strengths for
electric dipole (E1) transitions in FeX
table3.dat 105 1220 Transition energies, radiative rates, oscillator
strengths, and line strengths for electric
quadrupole (E2), magnetic dipole (M1), and
magnetic quadrupole (M2) transitions in FeX
tables.tex 296 2545 LaTeX version of the tables
--------------------------------------------------------------------------------
See also:
J/A+A/420/783 : Electron impact excitation of Fe XVII (Aggarwal+, 2004)
J/A+A/399/799 : Fe XI trans. effective collision strengths (Aggarwal+, 2003)
J/A+A/407/769 : Excitation rates for transitions in Ca XV (Aggarwal+, 2003)
J/A+A/410/349 : Effective collision strengths in Fe XV (Aggarwal+, 2003)
J/ApJS/121/265 : Oscillator Strengths and Radiative Rates for FeXV (Deb+, 1999)
J/ApJS/123/311 : Excitation rate coefficients for O III (Aggarwal+, 1999)
J/A+A/418/371 : Electron impact excitation of Fe XIII (Aggarwal+, 2004)
J/A+A/429/1117 : Fe XIII effective collision strengths (Aggarwal+, 2005)
J/A+A/460/331 : Fe IX radiative and excitation rates (Aggarwal+, 2006)
J/A+A/463/399 : Fe XVI radiative rates (Aggarwal+, 2007)
J/A+A/484/879 : Fe XXVII radiative and excitation rates (Aggarwal+, 2008)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Index Index number
4- 22 A19 --- Conf Configuration
25- 36 A12 --- Level Level
39- 44 F6.4 Ry Expt ? Theoretical threshold energy (1)
46- 51 F6.4 Ry BD Threshold energy from Bhatia & Doschek (1995,
At. Data Nucl. Data Tables, 60, 97)
53- 58 F6.4 Ry GRASP4 GRASP threshold energy, present results from
4 configurations and 54 levels
60- 65 F6.4 Ry DGM Threshold energy from Deb et al.
(2002ApJS..141..247D 2002ApJS..141..247D)
67- 72 F6.4 Ry GRASP8 GRASP threshold energy, present results from
8 configurations and 669 levels
--------------------------------------------------------------------------------
Note (1): NIST (http://www.physics.nist/gov/PhysRefData)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- i i level
4- 5 I2 --- j j level
7- 15 E9.3 0.1nm DEij Transition energy
17- 25 E9.3 --- fij Oscillator strength
27- 35 E9.3 s-1 Aji Radiative rates
37- 45 E9.3 --- S Line strength (in atomic units)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- i i level
4- 5 I2 --- j j level
7- 15 E9.3 0.1nm DEij Transition energy
17- 25 E9.3 --- fijE2 ? Oscillator strength for electric quadrupole
(E2) transition
27- 35 E9.3 s-1 AjiE2 ? Radiative rates for electric quadrupole (E2)
transition
37- 45 E9.3 --- SE2 ? Line strength (in atomic units) for
electric quadrupole (E2) transition
47- 55 E9.3 --- fijM1 ? Oscillator strength for magnetic dipole (M1)
transition
57- 65 E9.3 s-1 AjiM1 ? Radiative rates for magnetic dipole (M1)
transition
67- 75 E9.3 --- SM1 ? Line strength (in atomic units) for magnetic
dipole (M1) transition
77- 85 E9.3 --- fijM2 ? Oscillator strength for magnetic quadrupole
(M2) transition
87- 95 E9.3 s-1 AjiM2 ? Radiative rates for magnetic quadrupole (M2)
transition
97-105 E9.3 --- SM2 ? Line strength (in atomic units) for magnetic
quadrupole (M2) transition
--------------------------------------------------------------------------------
Table 4: Comparison of lifetimes for levels of Fe X
--------------------------------------------------------------------------------
Level Present Results Experimental
--------------------------------------------------------------------------------
3s23p5 2Po1/2 14.51ms 13.64± 0.25a, 14.41± 0.14b
3s3p6 2S1/2 234.00ps 270. ±20. c
3s23p4(3P)3d 4F9/2 77.27ms 85.7 ± 9.2d, 110. ± 5. e
3s23p4(3P)3d 4F7/2 56.47ms 93. ±30. d, 58. ±10. f
3s23p4(3P)3d 2F7/2 13.69ms 16.0 ± 1.6f
3s23p4(1D)3d 2F7/2 4.56ms 4.6 ± 0.4f
3s23p4(1D)3d 2G9/2 12.86ms 17.8 ± 3.1d
--------------------------------------------------------------------------------
References:
a: Moehs et al. (2001, Phys. Rev., A63, 032515)
b: Traebert et al. (2004, J. Phys. B, 37, 945)
c: Traebert (1996, J. Phys. B, 29, L217)
d: Moehs et al. (2000, Phys. Rev. Lett., 85, 38)
e: Traebert et al. (2003, J. Phys. B, 36, 1129)
f: Traebert et al. (2002, J. Phys. B, 35, 671)
--------------------------------------------------------------------------------
Acknowledgements: Kanti Aggarwal
(End) Patricia Vannier [CDS] 07-Aug-2004