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Cherevko K.V.,Beijing Normal University | Cherevko K.V.,Beijing Radiation CenterBeijing | Cherevko K.V.,Taras Shevchenko National University | Bulavin L.A.,Taras Shevchenko National University | And 5 more authors.
Physical Review C - Nuclear Physics | Year: 2015

The curvature correction term to the surface tension is used as a criterion for the efficiency of the Skyrme interaction in describing surface properties. Based on the nuclear equation of state, the curvature correction term to the surface tension coefficient is calculated for 97 standard Skyrme interaction parameter sets in the vicinity of nuclear saturation density at zero temperature. The main idea is to find those parametrizations that give the Tolman δ correction close to the available theoretical predictions from the statistical theory. Only 59 out of 97 models give satisfactory results. Comparison of the obtained results with the results of the implementation of different macroscopic and microscopic constraints to Skyrme parametrizations available in the literature allows us to select four models that satisfy all the constraints. © 2015 American Physical Society. Source

Sun W.,Beijing Normal University | Sun W.,Beijing Radiation CenterBeijing | Liu Z.,Beijing Normal University | Liu Z.,Beijing Radiation CenterBeijing | And 10 more authors.
Optics Communications | Year: 2015

Abstract The polycapillary optics was proposed to be used as two-dimensional X-ray gratings with high aspect ratios for high energy X-rays. The X-ray Talbot interferometer was designed numerically using the polycapillary X-ray gratings and a conventional X-ray source. The simulation showed that it was available to get a high-aspect-ratio pattern of the polycapillary X-ray gratings for higher energies than 60 keV. Moreover, this design of polycapillary gratings decreased the requirement for high power of the X-ray source. The polycapillary X-ray gratings had potential applications in X-ray imaging technology for medical fields, industrial nondestructive tests, public security, physical science, chemical analysis, life science, nanoscience biology and energy science. © 2015 Elsevier B.V. Source

Peng S.,Beijing Normal University | Peng S.,Beijing Radiation CenterBeijing | Liu Z.,Beijing Normal University | Liu Z.,Beijing Radiation CenterBeijing | And 12 more authors.
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | Year: 2015

Abstract The geometrical description of capillary systems adjusted for the controlled guiding of X-rays and the basic theory of the transmission of X-rays are presented. A method of numerical calculation, based on Ray-Tracing theory, is developed to simulate the transmission efficiency of an X-ray parallel lens and the shape and size of the light spot gain from it. The simulation results for two half-lenses are in good agreement with the experimental results. © 2015 Elsevier B.V. Source

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