J/ApJS/212/11 Energy levels and spectral lines of FeV (Kramida, 2014)
Energy levels and spectral lines of quadruply ionized iron (Fe V).
Kramida A.
<Astrophys. J. Suppl. Ser., 212, 11 (2014)>
=2014ApJS..212...11K 2014ApJS..212...11K
ADC_Keywords: Atomic physics
Keywords: atomic data; infrared: general; line: identification;
methods: data analysis; techniques: spectroscopic;
ultraviolet: general
Abstract:
This paper, combining a critical compilation with new calculations,
provides revised comprehensive lists of recommended energy levels,
observed spectral lines, and transition probabilities in the spectrum
of quadruply ionized iron (Fe V). The new level optimization made in
this work is based on critically assessed uncertainties of about 2000
wavelengths previously measured with grating spectrographs. For 80% of
energy levels, relative uncertainties have been reduced by a factor of
three on average, compared with previously reported uncertainties. For
65% of observed lines, uncertainties of the new Ritz wavelengths are
smaller than those of observed wavelengths by a factor of four on
average.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 152 2310 Spectral lines of Fe V
table2.dat 111 332 Energy levels of Fe V
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See also:
J/A+AS/144/141 : Iron Project. XLIII. Fe V (Nahar+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- Int Relative intensity (1)
21- 28 F8.3 0.1nm lam.o [302/8344]? Observed wavelength; Angstroms (2)
30- 34 F5.3 0.1nm e_lam.o ? Uncertainty in lam.o
36- 44 F9.2 cm-1 sigma ? Observed wavenumber σ (3)
46- 58 A13 --- C1 Lower level configuration (4)
60- 62 A3 --- T1 Lower level term (4)
65 I1 --- J1 ? Lower level J (4)
68- 79 A12 --- C2 Upper level configuration (4)
82- 84 A3 --- T2 Upper level term (4)
87 I1 --- J2 ? Upper level J (4)
90-100 F11.4 0.1nm lam.c Calculated (Ritz) wavelength; Angstroms (2)
102-110 F9.4 0.1nm e_lam.c Uncertainty in lam.c
112-120 E9.2 s-1 A ? Transition probability; A-value
122-123 A2 --- Q Accuracy, from A+ to E (5)
128-132 A5 --- Type Transition type (6)
135-140 A6 --- r_A Transition probability reference (7)
142-149 A8 --- Ref Wavelength and classification reference (7)
152 A1 --- Com Comment (8)
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Note (1): Relative observed intensities in arbitrary units are given on a
uniform linear scale in terms of total energy flux under the line
profile. They correspond to emission from plasma with an effective
excitation temperature of 6.6eV. The intensity value is followed by
the line character:
bl = blended (the blending species is given in parentheses)
i = identification uncertain
m = masked
: = wavelength was not measured; the value given is a rounded Ritz value
* = multiply classified or intensity given is shared by more than one line
? = questionable observation
Note (2): Wavelength in standard air for 2000 < Wave < 20000 Angstrom, in
vacuum otherwise. Conversion between air and vacuum was made with the
five-parameter formula from Peck E.R. & Reeder K. 1972JOSA...62..958P 1972JOSA...62..958P
Note (3): Observed wave number in vacuum.
Note (4): C, T, and J are the lower and upper level configuration, term, and
J labels. They refer to columns Configuration, Term, and J of Table 2.
Note (5): Transition probability uncertainty code: since the statistical
distribution of both measured and calculated A values is far from
normal, uncertainties of the adopted A values are specified with a
letter code instead of numerical values. The letter code is explained
in the online Help, section Output for Lines of the Atomic Spectra
Database; see Kramida et al. (2013, http://physics.nist.gov/asd).
Out of the total 2310 transitions included in Table 1, 2018 (or 87%)
have critically evaluated A values. About 40% of these A values are
of the accuracy category C or better (uncertainty 25% or less).
See Section 5.
Note (6): Transition type as follows:
Blank = electric-dipole transition
M1 = magnetic-dipole transition
E2 = electric-quadrupole transition
M1+E2 = a mix of magnetic-dipole and electric-quadrupole transitions
Note (7): Reference as follows:
A01 = Azarov V.I. et al. 2001PhyS...63..438A 2001PhyS...63..438A
A73 = Aller L.H. et al. 1973Ap&SS..20...93A 1973Ap&SS..20...93A
B37 = Bowen I.S. 1937PhRv...52.1153B 1937PhRv...52.1153B
B60 = Bowen I.S. 1960ApJ...132....1B 1960ApJ...132....1B
E75 = Ekberg J.O. 1975PhyS...12...42E 1975PhyS...12...42E
FH74 = Fawcett B.C. & Henrichs H.F. 1974A&AS...18..157F 1974A&AS...18..157F
K85 = Kalinin S.K., Kononov E.Ya., Perevertun V.M., Podobedova L.I.,
Ryabtsev A.N. & Fatkhudinov R.N. 1985, Atlas of the Iron Spectrum
for the Vacuum Ultraviolet Region (Acad. Sci. Kazakh. SSR, Alma-Ata,
USSR)
MK97 = McKenna F.C. et al. 1997ApJS..109..225M 1997ApJS..109..225M
R85 = Raassen A.J.J. 1985ApJ...292..696R 1985ApJ...292..696R
RU96 = Raassen A.J.J. & Uylings P.H.M. 1996PhST...65...84R 1996PhST...65...84R; Numerical data
on calculated energy levels and transition rates produced with the
orthogonal operators method in 1998 were downloaded from the authors'
web site, http://www.science.uva.nl/pub/orth/, on September 25, 2013
N00 = Nahar S.N., Delahaye F., Pradhan A.K., & Zeippen C.J. 2000,
Cat. J/A+AS/144/141
OM01 = O'Malley S.M., Beck D.R. & Oros D.P. 2001PhRvA..63c2501O 2001PhRvA..63c2501O
T77 = Thackeray A.D. 1977MmRAS..83....1T 1977MmRAS..83....1T
TW = this work (calculations with Cowan's codes)
Note (8): Comment as follows:
P = Predicted line
X = Excluded from the level optimization
S = This line alone determines one of the energy levels involved
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- Conf Configuration (1)
21- 25 A5 --- Term Term
27 I1 --- J ? J value
30- 38 F9.2 cm-1 Level Energy level value; excitation energy (2)
40- 46 F7.2 cm-1 e_Level ? Uncertainty in Level
48 A1 --- Com Comment (3)
50- 57 F8.1 cm-1 PL ? Previously recommended level value (4)
59- 64 F6.1 cm-1 e_PL ? Uncertainty in PL (4)
66- 68 I3 --- Perc ? First Percentage (5)
71- 82 A12 --- Conf1 Configuration of the First Percentage (5)
84- 86 A3 --- Term1 Term of the First Percentage (5)
90- 91 I2 --- Perc2 ? Second Percentage (5)
96-108 A13 --- Conf2 Configuration of the Second Percentage (5)
109-111 A3 --- Term2 Term of the Second Percentage (5)
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Note (1): Configuration and term labels for many levels have little physical
meaning because of strong mixing. These labels are used in the line
list (Table 1). Some of the labels have been changed here compared to
the previously published ones in order to make them unique.
Note (2): Level values were determined in this work using least-squares
optimization with the LOPT code [Kramida A.E. 2011CoPhC.182..419K 2011CoPhC.182..419K],
except for one semiempirical value 279667cm-1 from unpublished
parametric calculations of Raassen and Uylings made in 1998 (see
Raassen A.J.J. & Uylings P.H.M. 1996PhST...65...84R 1996PhST...65...84R). Several highly
excited levels are given with two figures after the decimal point
despite the uncertainty being greater than 0.25cm-1. In these cases,
the extra digit was necessary to reproduce the accurately measured
transition wavelengths. The ionization energy is from Lotz W.
1967JOSA...57..873L 1967JOSA...57..873L
Note (3): Flag as follows:
? = uncertain level value
] = semi-empirically calculated value
Note (4): Previously adopted level values for the 3d4, 3d34s, and 3d34p
configurations, except for 3d3(2D2)4s 3D2, are from [Ekberg J.O.
1975PhyS...12...42E 1975PhyS...12...42E], the rest are from [Azarov V.I., et al.
2001PhyS...63..438A 2001PhyS...63..438A]. The ionization energy from [Sugar J. &
Corliss C. 1985, JPCRD, 14, Suppl. 2, 1] is left unchanged.
Note (5): Percentage compositions of the 3d4, 3d34s, and 3d34p
configurations are from calculations of Raassen & Uylings
(1996PhST...65...84R 1996PhST...65...84R), while those of the 3d34d and 3d35s
configurations are from Azarov et al. (2001PhyS...63..438A 2001PhyS...63..438A).
If no labels are given in columns Conf1 and Term1, the Perc value
refers to the configuration and term given in columns Conf and Term.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 06-Jun-2014