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within Han-Woo Choi Remove this filter Physics Remove this filter Theoretical, Mathematical and Computational Physics Remove this filter

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  1. No Access

    Article

    Thickness analysis of LiF thin films by using 7Li(p,n) and 19F(p,αγ) nuclear reactions

    A neutron time of flight (n-TOF) technique is applied for analyzing the thickness of a LiF thin film used as a neutron target. Measuring the flight time of the neutron generated from the neutron target gives i...

    Gi-Dong Kim, Hyung-Joo Woo, Han-Woo Choi… in Journal of the Korean Physical Society (2013)

  2. No Access

    Article

    Control of the chemical state change of sulfur in solid compound targets during high-resolution PIXE measurements

    A high-energy-resolution wavelength-dispersive (WD) X-ray spectrometer in the Johansson geometry, which allowed energy resolution below the natural linewidth of the Kα lines was employed in measurements of the pr...

    Hyung-Joo Woo, Han-Woo Choi, Gi-Dong Kim… in Journal of the Korean Physical Society (2012)

  3. No Access

    Article

    Structural and optical characterization of GaN nanostructures formed by using N+ implantation into GaAs at various temperature

    We have investigated the evolution of GaN phase nanocrystallite formation in a GaAs matrix by using nitrogen-ion implantation and subsequent rapid thermal annealing. A semi-insulating GaAs (100) wafer was impl...

    Hyung-Joo Woo, Gi-Dong Kim, Han-Woo Choi… in Journal of the Korean Physical Society (2012)