Journal of the Korean Physical Society
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Evaluation of the MEMS based portable respiratory training system with a tactile sensor for respiratory-gated radiotherapy
Journal of the Korean Physical Society - Tập 71 - Trang 452-458 - 2017
In respiratory-gated radiotherapy, it is important to maintain the regular respiratory cycles of patients. If patients undergo respiration training, their regular breathing pattern is affected. Therefore, we developed a respiratory training system based on a micro electromechanical system (MEMS) and evaluated the feasibility of the MEMS in radiotherapy. By comparing the measured signal before and ......
A New Baseline Subtraction Method for Di-hadron Correlations in High-multiplicity Small System Collisions
Journal of the Korean Physical Society - Tập 73 - Trang 677-683 - 2018
Azimuthal anisotropy in high-multiplicity small system collisions is often quantified by the harmonic modulations cn = ‹cos (nΔφ)› in di-hadron azimuthal correlations, with a non-flow baseline subtraction using correlation functions in low-multiplicity events. We present mathematical evaluations for three different baseline subtraction methods; i) the template fit method, ii) the reference fit met......
In-vivo analysis of the uptake process of heavy metals through maize roots by using synchrotron X-ray fluorescence spectroscopy
Journal of the Korean Physical Society - Tập 69 - Trang 1824-1829 - 2016
The uptake of heavy metals by plants has been receiving much attention for crop contamination and phytoremediation. We employed synchrotron X-ray fluorescence (XRF) spectroscopy for an in-vivo analysis of heavy-metal uptake through a strand of maize root. A focused X-ray beam of 2.5 × 2.5 μm2 in physical dimensions was scanned along horizontal lines of the maize root at intervals of 3 μm at the 4B......
A Monochromatic Soft X-ray Generation from Femtosecond Laser-produced Plasma with Aluminum
Journal of the Korean Physical Society - Tập 73 - Trang 1834-1839 - 2018
A tabletop ultrafast soft x-ray has been generated from the laser-produce plasma with a femtosecond pulsed Ti:Sapphire laser. The estimated total flux of Al Kα is of 2.2 × 109 photons/sec in 4π radian and the parameters related to the optical performance were obtained. The tungsten/silicon multilayer, flat quartz and bent thallium acid phthalate (TLAP) crystal were used for monochromatization of s......
Propagation properties of electromagnetic multi-Gaussian Schell model beams propagating through atmospheric turbulence
Journal of the Korean Physical Society - Tập 64 - Trang 826-831 - 2014
A model for electromagnetic multi-Gaussian Schell-model beams is introduced. An analytical expression for the cross-spectral density matrix of electromagnetic multi-Gausssian Schell-model (EMGSM) beams propagating through non-Kolmogorov turbulence is derived based on the extended Huygens-Fresnel principle. With help of this expression, the average intensity, degree of coherence (DOC) and degree of......
Magnet design for the 10MeV AVF cyclotron accelerator
Journal of the Korean Physical Society - Tập 63 - Trang 1347-1350 - 2013
In this paper, an azimuthally varying field (AVF) magnet is designed to produce a 10 MeV proton beam. In order to design and analyze the magnet three-dimensionally, we use the CST program. Also, field mapping results have been obtained by using the CST program and the MATLAB program to validate the precision of the design. In addition, an iterative process is conducted for magnet shimming. The pre......
The optical and structural properties of CuIn1−x Ga x Se2 thin films fabricated with various Ga contents by using the co-evaporation technique
Journal of the Korean Physical Society - Tập 60 - Trang 1708-1712 - 2012
The purpose of the present study is to investigate the optical and the structural properties of CuIn1−x
Ga
x
Se2 (CIGS) thin films with various Ga/[In+Ga] ratios grown by using the coevaporation technique. The Ga ratios were 0, 0.15, 0.29, 0.40, 0.56, 0.73, and 1. As the Ga/[In+Ga] ratio increased, the grain size of CIGS films decreased, and the X-......
Sterilization of medical equipment and contaminated articles by making use of a resistive barrier discharge
Journal of the Korean Physical Society - Tập 61 - Trang 551-556 - 2012
Presented here is an apparatus consisting of an atmospheric resistive-barrier discharge for the sterilization of medical tools wrapped in typical hospital cloths, for the sterilization of manufactured drugs in typical packaging materials, and for the sterilization of biologically-contaminated articles. The sterilization apparatus consists of layers of the resistive-barrier discharge device operati......
Raman scattering study of the lattice dynamic of URu2Si2 and sample’s preparation
Journal of the Korean Physical Society - Tập 62 Số 10 - Trang 1427-1430 - 2013
Spin triplet superconducting phases in Sr2RuO4 in a magnetic field applied along the c-axis
Journal of the Korean Physical Society - Tập 62 - Trang 1844-1847 - 2013
We investigate the spin-triplet superconducting state of Sr2RuO4 in a magnetic field along the c-axis on the basis of the four-component Ginzburg-Landau (GL) model with a weak spin-orbit coupling. We show that the non-unitary superconducting phase is stabilized near the upper critical field owing to a coupling between the chirality and the magnetic field. The vortex lattice structures of this supe......
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