J/ApJS/228/17 Spectra of a Holmium in the near-UV. II. (Basar+, 2017)
Line identification of atomic and ionic spectra of Holmium in the near-UV.
II. Spectra of Ho II and Ho III.
Basar G., Al-Labady N., Ozdalgic B., Guzelcimen F., Er A., Ozturk I.K.,
Ak T., Bilir S., Tamanis M., Ferber R., Kroger S.
<Astrophys. J. Suppl. Ser., 228, 17-17 (2017)>
=2017ApJS..228...17B 2017ApJS..228...17B (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics ; Spectra, ultraviolet
Keywords: atomic data; line: identification; methods: laboratory: atomic;
techniques: spectroscopic
Abstract:
Fourier Transform spectra of Holmium (Ho) in the UV spectral range
from 31530 to 25000cm-1 (317 to 400nm) have been investigated,
particularly focusing on the ionic lines. The distinction between the
different degrees of ionization (I, II, and III) is based on
differences in signal-to-noise ratios from two Ho spectra, which have
been measured with different buffer gases, i.e., neon and argon. Based
on 106 known Ho II and 126 known Ho III energy levels, 97 lines could
be classified as transitions of singly ionized Ho and 9 lines could be
classified as transitions of doubly ionized Ho. Of the 97 Ho II lines,
6 have not been listed in the extant literature. Another 215 lines
have been assigned to Ho II, though they could not be classified on
the basis of the known energy levels.
Description:
The experimental setup, as well as the classification program Class_lw
(Windholz & Guthohrlein 2003PhST..105...55W 2003PhST..105...55W, L. Windholz 2015, private
communication), for the analysis of spectra have already been
described in Part I (Al-Labady et al. 2017, J/ApJS/228/16). For the
sake of completeness we remind the reader that two Ho spectra have
been measured, one with neon as a buffer gas and the other with argon.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 87 351 List of classified and unclassified Ho II lines
in the measured FT spectra
from 31530cm-1 to 25000cm-1
table2.dat 88 9 List of classified and unclassified Ho III lines
in the measured FT spectra
from 31530cm-1 to 25000cm-1
table3.dat 40 67 List of lines in the measured FT spectra
from 31530cm-1 to 25000cm-1,
which are assigned to Ho I or Ho II
table4.dat 40 133 List of lines in the measured FT spectra
from 31530cm-1 to 25000cm-1,
which are assigned to Ho I or Ho III
table5.dat 99 1033 Complete list of all 1033 Ho lines in the
measured FT spectra
from 31530cm-1 to 25000cm-1
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See also:
VI/74 : Atomic Energy Level Data (NIST 1993)
J/ApJS/228/16 : Spectra of a Holmium in the NUV. I. Ho I. (Al-Labady+, 2017)
J/ApJS/182/51 : Transition probabilities of rare earth elements (Lawler+, 2009)
http://www.nist.gov/pml/atomic-spectra-database/ : NIST atomic spectra database
Byte-by-byte Description of file: table[12].dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.4 nm lamAir [318/400] Center-of-gravity wavelength
in air (G1)
10- 17 F8.2 cm-1 Sig [25010.5/31367.5] Center-of-gravity transition
wavenumber in vacuum (G1)
19- 22 I4 --- SNR-Ar [1/512] Signal-to-noise ratio
from the FT spectrum with Ar
24- 27 I4 --- SNR-Ne [1/186] Signal-to-noise ratio
from the FT spectrum with Ne
29- 32 F4.2 --- R [0.09/6] Relation between S/N
in Ho-Ar & in Ho-Ne spectrum
34- 40 A7 --- Comm Comments (G2)
42- 45 I4 10-3/cm W [100/3250] Line widths;
1milli-Kayser=0.001cm-1
47 A1 --- Ind Indicator of hyperfine structure (G3)
49- 53 I5 10-3/cm DW [-2433/3045]? Total separation
(only for table 1) (G4)
55- 59 F5.2 cm-1 Ds [-0.04/0.2]? Difference between the wavenumber
in vacuum and the energy difference of the levels
61- 70 F10.4 cm-1 El [0/16749.3]? Level energy of lower level
72- 74 F3.1 --- Jl [4/8]? J quantum number of lower level
76- 84 F9.3 cm-1 Eu [25481.7/43755.8]? Level energy of upper level
86- 88 F3.1 --- Ju [4/9]? J value of upper level
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Byte-by-byte Description of file: table[34].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.4 nm lamAir [319/400.1] Center-of-gravity wavelength
in air (G1)
10- 17 F8.2 cm-1 Sig [24992.3/31338.4] Center-of-gravity transition
wavenumber in vacuum (G1)
19- 20 I2 --- SNR-Ar [2/58] Signal-to-noise ratio
from the FT spectrum with Ar
22- 23 I2 --- SNR-Ne [2/86] Signal-to-noise ratio
from the FT spectrum with Ne
25- 28 F4.2 --- R [0.3/1.8] Relation between S/N
in Ho-Ar & in Ho-Ne spectrum
30- 33 A4 --- Comm Comments (G2)
35- 38 I4 10-3/cm W [100/2240] Line widths;
1milli-Kayser=0.001cm-1
40 A1 --- Ind Indicator of hyperfine structure (G3)
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.4 nm lamAir [317/400.1] Center-of-gravity wavelength
in air (G1)
10- 17 F8.2 cm-1 Sig [24992.3/31529.4] Center-of-gravity transition
wavenumber in vacuum (G1)
19- 22 I4 --- SNR-Ar [1/1770] Signal-to-noise ratio
from the FT spectrum with Ar
24- 27 I4 --- SNR-Ne [1/1165] Signal-to-noise ratio
from the FT spectrum with Ne
29- 32 F4.2 --- R [0.09/6] Relation between S/N
in Ho-Ar & in Ho-Ne spectrum
34- 40 A7 --- Comm Comments (G2)
42- 49 A8 --- Assign Assignment to degree of ionization
51- 54 I4 10-3/cm W [100/3250] Line widths;
1milli-Kayser=0.001cm-1
56 A1 --- Ind Indicator of hyperfine structure (G3)
58- 62 I5 10-3/cm DW [-2433/3045]? Total separation (G4)
64- 68 F5.2 cm-1 Ds [-0.3/0.3]? Difference between the wavenumber
in vacuum and the energy difference of the levels
70- 79 F10.4 cm-1 El [0/16749.3]? Level energy of lower level
81- 84 F4.1 --- Jl [4/10.5]? J quantum number of lower level
86- 94 F9.3 cm-1 Eu [25272.6/43755.8]? Level energy of upper level
96- 99 F4.1 --- Ju [3.5/9]? J value of upper level
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Global notes:
Note (G1): From the FT spectrum.
Note (G2): Comment as follows:
nl = new line;
nc = line known, but newly classified;
b = blend;
ex = line excluded from averaging of R values.
Note (G3): Indicator as follows:
+ = clear fingerprint with increasing intensities;
- = clear fingerprint with decreasing intensities;
* = no clear increase or decrease visible.
Note (G4): Of the strong hyperfine components (1mK=0.001cm-1), negative if
the highest hyperfine component lies at smaller frequencies.
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History:
From electronic version of the journal
References:
Al-Labady et al. Part. I. 2017ApJS..228...16A 2017ApJS..228...16A Cat. J/ApJS/228/16
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 12-Apr-2017