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The temperature fluctuation
of the stainless steel irradiated by a CW CO2 laser is studied. In the
experiment, the temperature fluctuation and the temperature rise is measured by the
infrared thermal imagers. It is found that the maximum amplitude of the temperature
fluctuation is kept constant with the increase of the laser heating time;this is different
from aluminum, low carbon steel, epoxylite and polymethylmethacrylate. This characteristic
of the stainless steel is determined by the variance of thermal conductivity and thermal
diffusivity with the increase of temperature. A thorough study of the effects of the
material thermal properties on the temperature fluctuation is needed. 相似文献
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For the NLS+ equation under nonvanishing boundary condition, to avoid complexity due to Riemann surface, required for double-valued function of the usual spectral parameter, starting from a particular auxiliary spectral parameter, a special inverse scattering method is systematically developed, and explicit expressions of the general multi-soliton solutions are successfully obtained. Asymptotic behaviors of the muiti-soliton solutions, additional displacement of center and additional phase shift of the peak are derived. When the boundary value approaches zero, all the formulas become the known ones naturally. 相似文献
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In this paper, based on Maxwell's equations and boundary continuity condi-tions of electromagnetic fields, we derive rigorous vector coupled-wave equations of two-dimensional diffractive patterns for an arbitrary polarization in the resonance domain, and describe the solution to these equations. We verify this theory with a practical example, and show the effectiveness of this method for the resonance-domain diffractive optics. 相似文献
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For the NLS+ equation under nonvanishing boundary condition, to avoid complexity due to Riemann surface, required for double-valued function of the usual spectral parameter, starting from a particular auxiliary spectral parameter, a special inverse scattering method is systematically developed, and explicit expressions of the general multi-soliton solutions are successfully obtained. Asymptotic behaviors of the muiti-soliton solutions, additional displacement of center and additional phase shift of the peak are derived. When the boundary value approaches zero, all the formulas become the known ones naturally. 相似文献
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