OXYGEN DEPLETION OF MYLAR UNDER BOMBARDMENT BY 1.0 AND 1.6 MeV PROTONS

  • V. N. Bondarenko National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine
  • A. V. Goncharov National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine
  • V. I. Sukhostavets National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine
  • S. G. Karpus National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine
  • V. V. Kuzmenko National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine
  • K. V. Shebeko National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine

Abstract

Oxygen losses in polyethylene terephthalate (PET, Mylar, (C10H8O4)n) samples under proton bombardment in vacuum were studied with proton energies 1.0 and 1.6 MeV, in the fluence range from 5·1012 to 2.6·1016 cm-2 at the current density 1 μA/cm2. The oxygen depletion was ivestigated in situ by proton backscattering spectrometry. The relation between oxygen content n and the fluence φ was studied for the nearsurface layer of a sample (up to 0.9 μm for 1.0 MeV proton energy, and 1.9 μm for 1.6 MeV energy). Approximation n=n0exp(-σφ) was used at the initial section of the n(φ) dependence (up to 20% oxygen content decreasing). Here σ is the oxygen depletion cross section. The measured cross section values equal 1.1·10-17 cm2 (±12%) for 1.0 MeV proton energy, and 4.2·10-18 cm2 (±15%) for 1.6 MeV energy.

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Author Biographies

V. N. Bondarenko, National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine
 
A. V. Goncharov, National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine
 
V. I. Sukhostavets, National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine

  
S. G. Karpus, National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine

 
V. V. Kuzmenko, National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine

 
K. V. Shebeko, National Scientific Center “Kharkov Institute of Physics and Technology” 1, Akademicheskaya st., Kharkov 61108, Ukraine
 

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Published
2015-06-13
Cited
0 article
How to Cite
Bondarenko, V., Goncharov, A., Sukhostavets, V., Karpus, S., Kuzmenko, V., & Shebeko, K. (2015). OXYGEN DEPLETION OF MYLAR UNDER BOMBARDMENT BY 1.0 AND 1.6 MeV PROTONS. East European Journal of Physics, 2(1), 15-22. https://doi.org/10.26565/2312-4334-2015-1-02