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Title: Line Identification of Atomic and Ionic Spectra of Holmium in the Near-UV. Part I. Spectrum of Ho i

Abstract

The Fourier Transform spectra of a Holmium hollow cathode discharge lamp have been investigated in the UV spectral range from 25,000 up to 31,530 cm{sup −1} (317 to 400 nm). Two Ho spectra have been measured with neon and argon as buffer gases. Based on the intensity ratios from these two spectra, a distinction was made between atomic and ionic lines (ionic lines are discussed in an accompanying paper). Using the known Ho i energy levels, 71 lines could be classified as transitions of atomic Ho, 34 of which have not been published previously. Another 32 lines, which could not be classified, are listed in the literature and assigned as atomic Ho. An additional 370 spectral lines have been assigned to atomic Ho based on the signal-to-noise ratio in the two spectra measured under different discharge conditions, namely with buffer gases argon and neon, respectively. These 370 lines have not been previously listed in the literature.

Authors:
;  [1]; ; ; ;  [2];  [3]; ; ;  [4]
  1. Graduate School of Engineering and Sciences, Istanbul University, TR-34452 Beyazıt, Istanbul (Turkey)
  2. Faculty of Science, Department of Physics, Istanbul University, TR-34134 Vezneciler, Istanbul (Turkey)
  3. Hochschule für Technik und Wirtschaft Berlin, Wilhelminenhofstr. 75A, D-12459 Berlin (Germany)
  4. Laser Centre, The University of Latvia, Rainis Boulevard 19, LV-1586 Riga (Latvia)
Publication Date:
OSTI Identifier:
22661355
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal, Supplement Series; Journal Volume: 228; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ARGON; BUFFERS; ENERGY LEVELS; FOURIER TRANSFORMATION; HOLLOW CATHODES; HOLMIUM; LIGHT BULBS; NEON; NOISE; SIGNALS; SIGNAL-TO-NOISE RATIO; ULTRAVIOLET SPECTRA

Citation Formats

Al-Labady, N., Özdalgiç, B., Er, A., Güzelçimen, F., Öztürk, I. K., Başar, Gö., Kröger, S., Kruzins, A., Tamanis, M., and Ferber, R., E-mail: ikanat@istanbul.edu.tr. Line Identification of Atomic and Ionic Spectra of Holmium in the Near-UV. Part I. Spectrum of Ho i. United States: N. p., 2017. Web. doi:10.3847/1538-4365/228/2/16.
Al-Labady, N., Özdalgiç, B., Er, A., Güzelçimen, F., Öztürk, I. K., Başar, Gö., Kröger, S., Kruzins, A., Tamanis, M., & Ferber, R., E-mail: ikanat@istanbul.edu.tr. Line Identification of Atomic and Ionic Spectra of Holmium in the Near-UV. Part I. Spectrum of Ho i. United States. doi:10.3847/1538-4365/228/2/16.
Al-Labady, N., Özdalgiç, B., Er, A., Güzelçimen, F., Öztürk, I. K., Başar, Gö., Kröger, S., Kruzins, A., Tamanis, M., and Ferber, R., E-mail: ikanat@istanbul.edu.tr. Wed . "Line Identification of Atomic and Ionic Spectra of Holmium in the Near-UV. Part I. Spectrum of Ho i". United States. doi:10.3847/1538-4365/228/2/16.
@article{osti_22661355,
title = {Line Identification of Atomic and Ionic Spectra of Holmium in the Near-UV. Part I. Spectrum of Ho i},
author = {Al-Labady, N. and Özdalgiç, B. and Er, A. and Güzelçimen, F. and Öztürk, I. K. and Başar, Gö. and Kröger, S. and Kruzins, A. and Tamanis, M. and Ferber, R., E-mail: ikanat@istanbul.edu.tr},
abstractNote = {The Fourier Transform spectra of a Holmium hollow cathode discharge lamp have been investigated in the UV spectral range from 25,000 up to 31,530 cm{sup −1} (317 to 400 nm). Two Ho spectra have been measured with neon and argon as buffer gases. Based on the intensity ratios from these two spectra, a distinction was made between atomic and ionic lines (ionic lines are discussed in an accompanying paper). Using the known Ho i energy levels, 71 lines could be classified as transitions of atomic Ho, 34 of which have not been published previously. Another 32 lines, which could not be classified, are listed in the literature and assigned as atomic Ho. An additional 370 spectral lines have been assigned to atomic Ho based on the signal-to-noise ratio in the two spectra measured under different discharge conditions, namely with buffer gases argon and neon, respectively. These 370 lines have not been previously listed in the literature.},
doi = {10.3847/1538-4365/228/2/16},
journal = {Astrophysical Journal, Supplement Series},
number = 2,
volume = 228,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2017},
month = {Wed Feb 01 00:00:00 EST 2017}
}
  • Fourier Transform spectra of holmium (Ho) in the UV spectral range from 31,530 to 25,000 cm{sup −1} (317 to 400 nm) 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.more » 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.« less
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