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Revealing the Defects Introduced in N- or Ge-doped Cz-Si by γ Irradiation and High Temperature-High Pressure Treatment

100%

Wieteska K., Misiuk A., Prujszczyk M., Wierzchowski W., Surma B., Bąk-Misiuk J., Romanowski P., Shalimov A., Capan I., Yang D., Graeff W.

Acta Physica Polonica A

2008

vol. 114

issue 2

439-446

Effect of processing under high hydrostatic pressure (= 1.1 GPa), applied at 1270 K, on Czochralski grown silicon with interstitial oxygen content (c_O) up to 1.1×10^{18} cm^{-3}, admixed with N or Ge (Si-N, c_N ≤ 1.2×10^{15} cm^{-3}, or Si-Ge, c_{Ge} ≈ 7×10^{17} cm^{-3}, respectively), pre-annealed at up to 1400 K and next irradiated withγ-rays (dose, D up to 2530 Mrad, at energy E = 1.2 MeV), was investigated by high resolution X-ray diffraction, Fourier transform infrared spectroscopy, and synchrotron topography. Processing of γ-irradiated Si-N and Si-Ge under high pressure leads to stimulated precipitation of oxygen at the nucleation sites created by irradiation. It means that radiation history of Si-N and Si-Ge can be revealed by appropriate high temperature-high pressure processing.

Single Pulse Laser Ablation of AISI 316L Stainless Steel Surface Using Nd:YAG Laser Irradiation

75%

Demir P., Kacar E., Akman E., Demir A.

vol. 125

issue 2

439-441

The interaction of single-pulse Nd:YAG laser, operating at 1064 nm wavelength and 6 ns pulse duration, with AISI 316L stainless steel target surface was investigated experimentally and theoretically. Surface modification of stainless steel using laser irradiation was studied by observing the effects of varying incident laser pulse intensities on surface morphology. Surface structure of laser treated stainless steel was determined by optical microscopy and profilometry analyses. Numerical calculation by heat transfer equation was performed for single laser pulse irradiation. The results, obtained by theoretical and experimental processes, of the interaction between single-pulse Nd:YAG laser irradiation and AISI 316L stainless steel target surface are reported.

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2 Acta Physica Polonica A

1 2014

1 2008

1 Akman E.

1 Bąk-Misiuk J.

1 Capan I.

1 Demir A.

1 Demir P.

1 Graeff W.

1 Kacar E.

1 Misiuk A.

1 Prujszczyk M.

1 Romanowski P.

1 Shalimov A.

1 Surma B.

1 Wierzchowski W.

1 Wieteska K.

1 Yang D.

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Revealing the Defects Introduced in N- or Ge-doped Cz-Si by γ Irradiation and High Temperature-High Pressure Treatment

Single Pulse Laser Ablation of AISI 316L Stainless Steel Surface Using Nd:YAG Laser Irradiation