J/A+A/365/268 IRON Project. XLVII. Ni III (Bautista, 2001)
Atomic data from the Iron Project.
XLVII. Electron impact excitation of Ni III
Bautista M.
<Astron. Astrophys. 365, 268 (2001)>
=2001A&A...365..268B 2001A&A...365..268B
ADC_Keywords: Atomic physics
Keywords: atomic data - line: formation - ISM: abundances - ultraviolet: general
Abstract:
This paper reports R-matrix calculations of electron impact excitation
rates for Ni III. The calculation includes 70 LS terms corresponding
to the configurations 3d8, 3d74s, 3d74p, and 3d64s2. This
expansion results in 162 fine structure levels and 13041 transitions,
including optical, infrared, and ultraviolet lines. The collision
strengths, including detailed resonance structures, were integrated
over a Maxwellian distribution of electron energies and the
resulting effective collision strengths are given for a wide range of
temperatures. A collisional-radiative equilibrium model of the Ni III
ion is constructed and the strongest lines in the optical and infrared
spectral regions are identified. The emissivities of these lines and
emissivity line ratio diagnostics are presented.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 51 70 Energy levels in Rydbergs for the Ni III ion
relative to the 3d8 (3F) ground state.
table2.dat 59 19 Comparison between present and NIST radiative
transition rates (A-values) for allowed
transitions.
table3.dat 38 51 Comparison of effective collision strengths in
LS coupling at T=104K for excitations from
the ground term to the first 51 excited terms.
table4.dat 44 20 Comparison of effective collision strengths in
LS coupling from the present calculation and
those of WB.
table5.dat 86 40 Line emissivities for the strongest optical and
IR Ni III lines.
tables.tex 98 352 LaTeX version of the tables
--------------------------------------------------------------------------------
See also:
J/A+AS/103/273 : IRON Project II IR collision strengths of C-like ions
J/A+A/283/319 : IRON Project III B-like ions
J/A+AS/108/1 : IRON Project V Collision strengths of O-like ions
J/A+A/293/953 : IRON Project VI Fe II collision strengths
J/A+A/293/967 : IRON Project VII Fe II radiative transitions
J/A+AS/109/193 : IRON Project VIII Electron excitation of Ti-like ions
J/A+AS/119/509 : IRON Project XVII Radiative transition in Fe III
J/A+AS/119/523 : IRON Project XVIII Electron impact for Fe III
J/A+AS/120/361 : IRON Project XIX Fe II radiative transitions
J/A+AS/123/159 : IRON Project XXII C and O radiative rates
J/A+AS/123/575 : IRON Project XXIII Fe XXII excitation rate coefficients
J/A+AS/126/373 : IRON Project XXVII Fe IV collision strengths
J/A+AS/131/499 : IRON Project XXIX Boron isoelectronic sequence
J/A+AS/131/153 : IRON Project XXXI Fe XII electron excitation
J/A+AS/135/347 : IRON Project XXXV Fe XXIV & Fe XXV oscillator strengths
J/A+AS/136/395 : IRON Project XXXVII Fe VI collision strengths
J/A+AS/137/165 : IRON Project XXXVIII Fe XV fine-structure transitions
J/A+AS/143/483 : IRON Project XLII Fe XXI electron impact excitation
J/A+AS/144/141 : IRON Project XLIII Fe V transition probabilities
J/A+AS/147/111 : IRON Project XLIV Fe VI trans. prob. & line ratio
J/A+AS/147/253 : IRON Project XLV Ar XIII, Fe XXI trans. probabilities
J/A+A/372/1078 : IRON Project XLIX Fe XX electron impact excitation
J/A+A/372/1083 : IRON Project L Fe XIX electron impact excitation
J/A+A/394/753 : IRON Project LI Fe IX electron impact excitation
J/A+A/408/789 : IRON Project LIII Fe XVII transition probabilities
J/A+A/413/779 : IRON Project LIV Fe XX transition probabilities
J/A+A/420/763 : IRON Project LV Ni II electron impact excitation
J/A+A/437/345 : IRON Project LIX Fe IV transition probabilities
J/A+A/448/779 : IRON Project LXI Fe IV radiative transitions
J/A+A/457/721 : IRON Project LXII Fe XVIII allowed and forbidden trans.
J/A+A/466/763 : IRON Project LXIII Fe19+ electron impact excitation
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Index [1/70] Index
4- 27 A24 --- Level Level
29- 35 F7.5 Ry Exp Experimentallly determined energy
37- 43 F7.5 Ry Pres Present calculated energy (1)
45- 50 F6.4 Ry WB ? Watts & Burke (WB) calculated energy (1)
--------------------------------------------------------------------------------
Note (1): The present calculated energies are compared with experimentally
determined energies and those calculated by Watts & Burke (WB, 1998,
J. Phys. B: At. Mol. Opt. Phys., 31, 145).
The spectroscopic and correlation configurations for Ni III, and the
values of the scaling parameters λnl for each orbital in the
Thomas-Fermi-Dirac potential used in Superstructure, are also given
Ni III configurations:
Spectroscopic: 3p6 3d8, 3p6 3d7 4s, 3p6 3d7 4p,
3p6 3d6 4s2
Correlation: 3p6 3d6 4p2, 3p6 3d7 4d, 3p6 3d6 4s 4p,
3p5 3d9, 3p5 3d8 4s, 3p5 3d8 4p,
3p5 3d8 4d
λnl: 1.43121(1s), 0.93950(2s), 1.28641(2p), 1.15714(3s),
1.02417(3p), 1.01626(3d), 0.97488(4s), 0.96711(4p),
1.26086(4d)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 46 A46 --- Trans Transition
48- 52 F5.3 10+8s-1 NIST NIST radiative transition rates (A-values)
54- 59 F6.4 10+8s-1 Present Present radiative transition rates (A-values)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Index [2/52] Index
5- 20 A16 --- Final Final state
22- 26 F5.3 --- G(52CC) Effective collision strengths for (52CC)
28- 32 F5.3 --- G(70CC) Effective collision strengths for (70CC)
34- 38 F5.3 --- G(70CC)/G(52CC) Ratio G(70CC)/G(52CC)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- Trans Transition (1)
7- 11 F5.3 --- P5000K Present effective collision strength at 5000K
13- 17 F5.3 --- WB5000K WB effective collision strength at 5000K
20- 24 F5.3 --- P10000K Present effective collision strength at 10000K
26- 30 F5.3 --- WB10000K WB effective collision strength at 10000K
33- 37 F5.3 --- P20000K Present effective collision strength at 20000K
40- 44 F5.3 --- WB20000K WB effective collision strength at 20000K
--------------------------------------------------------------------------------
Note (1): The level indices refer to the entries in Table 1
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 E6.1 K T Temperature
8- 14 E7.0 cm-3 Ne Electron density
15- 22 E8.2 10-7W j(l6000) Emissivity per Ni2+ ion of the
λ6000 line
24- 30 E7.2 --- I(7.3um) 7.3µm line emissivity (1)
32- 38 E7.2 --- I(11um) 11µm line emissivity (1)
40- 46 E7.2 --- I(l7889) λ7889 line emissivity (1)
48- 54 E7.2 --- I(l8499) λ8499 line emissivity (1)
56- 62 E7.2 --- I(l6533) λ6533 line emissivity (1)
64- 70 E7.2 --- I(l6401) λ6401 line emissivity (1)
72- 78 E7.2 --- I(l4326) λ4326 line emissivity (1)
80- 86 E7.2 --- I(l4596) λ4596 line emissivity (1)
--------------------------------------------------------------------------------
Note (1): The emissivity of the lines is relative to that of λ6000
--------------------------------------------------------------------------------
Acknowledgements: Manuel Bautista
References:
1993A&A...279..298H 1993A&A...279..298H : IRON Project I Goal and methods
1994A&AS..107...29S 1994A&AS..107...29S : IRON Project IV Electron excitation of F-like ions
1995A&AS..110..209P 1995A&AS..110..209P : IRON Project IX Electron excitation of Cl-like ion
1995A&AS..111..347G 1995A&AS..111..347G : IRON Project X Si- & S-like ions IR coll. strengths
1996A&AS..115..151S 1996A&AS..115..151S : IRON Project XI Ar VI, K VII & CaVIII fine-structure
1995A&AS..114..367B 1995A&AS..114..367B : IRON Project XII V-like ions electron excitation
1996A&AS..115..551B 1996A&AS..115..551B : IRON Project XIII Ni II & Fe II electron excitation
1996A&A...309..677S 1996A&A...309..677S : IRON Project XIV Fe XIV fine-structure transition
1996A&AS..118..157K 1996A&AS..118..157K : IRON Project XV He II & Fe XXVI Electron excitation
1996A&AS..119..105B 1996A&AS..119..105B : IRON Project XVI Fe V oscillator strengths
1997A&AS..122..167B 1997A&AS..122..167B : IRON Project XX Fe I oscillator strengths
1997A&AS..122..177P 1997A&AS..122..177P : IRON Project XXI Fe I fine-structure transition
1997A&AS..126..105B 1997A&AS..126..105B : IRON Project XXIV Fe XXIV electron excitation
1998A&AS..127..545B 1998A&AS..127..545B : IRON Project XXV Fe XII electron excitation
1997A&AS..126..365B 1997A&AS..126..365B : IRON Project XXVI Fe IV oscillator strengths
1998A&AS..129..161B 1998A&AS..129..161B : IRON Project XXVIII F-like ions fine-structure trans.
1999A&AS..134..369S 1999A&AS..134..369S : IRON Project XXX P III, S IV & Cl V collision data
1998A&AS..133..245G 1998A&AS..133..245G : IRON Project XXXII Ar III effective collision strength
1999A&AS..135..159M 1999A&AS..135..159M : IRON Project XXXIII Carbon radiative rates
1999A&AS..136..385E 1999A&AS..136..385E : IRON Project XXXIV Fe XVI electron impact excitation
1999A&AS..137..175C 1999A&AS..137..175C : IRON Project XXXVI Fe XXIII electron excitation
1999A&AS..137..529B 1999A&AS..137..529B : IRON Project XXXIX Ni II oscillator strengths
2000A&AS..141..285S 2000A&AS..141..285S : IRON Project XL Fe XIV electron excitation
2000A&AS..142..313B 2000A&AS..142..313B : IRON Project XLI Fe VII electron excitation
2001A&A...365..258P 2001A&A...365..258P : IRON Project XLVI Fe X electron excitation
2003A&A...401.1177C 2003A&A...401.1177C : IRON Project LII Ni24 electron excitation
2005A&A...436.1123M 2005A&A...436.1123M : IRON Project LVII Ni IV radiative transition rates
2005A&A...433..717S 2005A&A...433..717S : IRON Project LVIII Fe XII electron impact excitation
2006A&A...446..361W 2006A&A...446..361W : IRON Project LX Fe17+ electron impact excitation
(End) Patricia Bauer [CDS] 24-Oct-2000