This paper gives an exact solution for free vibration of a physically nonuniform straight bar with varying section by the use of a class of integrable linear ordinary differential equation.
The variety, production cross section, energy spectrum and double differential cross section are calculated for the secondary particles produced by reactions of high energy protons in silicon.
计算得到了不同能量的高能质子与硅反应产生的次级粒子种类、截面、能谱和双微分截面。
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The ratio of co-polarization differential scattering section to cross-polarization differential scattering section increases versus the increase of rain rate.