First Spectrum of Tungsten

Authors

  • Abid Husain Department of Physics, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh
  • S. Jabeen Department of Physics, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh
  • Abdul Wajid Department of Physics, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh

DOI:

https://doi.org/10.26713/jamcnp.v5i2.753

Keywords:

Tungsten, Wadsworth spectrograph, Cowan's computer code

Abstract

The spectroscopic data of tungsten (W) is important for plasma science, as it is used as a diverter and in ITER. We have recorded the spectrum of tungsten on a 1.5-m Wadsworth spectrograph in the 2100--4900 í… wavelength range. The ground configuration of the neutral tungsten is 5d\({}^{4}\)6s\({}^{2}\). First excited configurations in the odd parity system are 5d\({}^{3}\)6s\({}^{2 }\)(6p + 7p + 5f + 6f) + 5d\({}^{4}\)6s6p. The 5d\({}^{4}\)6s6p configuration has already been studied. We have identified hundreds of lines in this spectrum and confirmed fifty nine levels of the 5d\({}^{4}\)6s6p configuration. Relativistic Hartree-Fock (HFR) and least squares fitted (LSF) parametric calculations were carried out to interpret the observed spectrum. We have found good agreement with the previously published data.

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References

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Published

2018-08-30
CITATION

How to Cite

Husain, A., Jabeen, S., & Wajid, A. (2018). First Spectrum of Tungsten. Journal of Atomic, Molecular, Condensed Matter and Nano Physics, 5(2), 97–122. https://doi.org/10.26713/jamcnp.v5i2.753

Issue

Vol. 5 No. 2 (2018)

Section

Research Article

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