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  •   DSpace@Işık
  • 1- Fakülteler | Faculties
  • Mühendislik Fakültesi / Faculty of Engineering
  • Makine Mühendisliği Bölümü / Department of Mechanical Engineering
  • MF - Makale Koleksiyonu | Makine Mühendisliği Bölümü / Department of Mechanical Engineering
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Far-infrared elastic scattering proposal for the Avogadro Project's silicon spheres

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Date

2018-05

Author

Humayun, Muhammad Hamza
Khan, Imran
Azeem, Farhan
Chaudhry, Muhammad Rehan
Gökay, Ulaş Sabahattin
Murib, Mohammed Sharif
Serpengüzel, Ali

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Citation

Humayun, M. H., Khan, I., Azeem, F., Chaudhry, M. R., Gökay, U. S., Murib, M. S. & Serpengüzel, A. (2018). Far-infrared elastic scattering proposal for the avogadro project's silicon spheres. Journal of Quantitative Spectroscopy and Radiative Transfer, 210, 173-179. doi:10.1016/j.jqsrt.2017.12.023

Abstract

Avogadro constant determines the number of particles in one mole of a substance, thus relating the molar mass of the substance to the mass of this substance. Avogadro constant is related to Systeme Internationale base units by defining the very concept of chemical quantity. Revisions of the base units created a need to redefine the Avogadro constant, where a collaborative work called the Avogadro Project is established to employ optical interferometry to measure the diameter of high quality 100 mm silicon spheres. We propose far-infrared spectroscopy for determining the Avogadro constant by using elastic scattering from the 100 mm Avogadro Project silicon spheres. Similar spectroscopic methods are already in use in the near-infrared, relating whispering gallery modes of the 1 mm silicon spheres to the diameter of the spheres. We present numerical simulations in the far-infrared and the near-infrared, as well as spatially scaled down elastic scattering measurements in the near-infrared. These numerical and experimental results show that, the diameter measurements of 100 mm single crystal silicon spheres with elastic scattering in the far-infrared can be considered as an alternative to optical interferometry.

Source

Journal of Quantitative Spectroscopy and Radiative Transfer

Volume

210

URI

https://hdl.handle.net/11729/1414
http://dx.doi.org/10.1016/j.jqsrt.2017.12.023

Collections

  • MF - Makale Koleksiyonu | Makine Mühendisliği Bölümü / Department of Mechanical Engineering [19]
  • Scopus İndeksli Makale Koleksiyonu [799]
  • WoS İndeksli Makale Koleksiyonu [818]

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