Inelastic K+p reactions at incident momenta from 1.37 GeV/c to 2.17 GeV/c

<p>A number of recent experiments have suggested the possibility of a highly inelastic resonance in Kp>+p>p scattering. To study the inelastic Kp>+p>p reactions, a 400 K exposure has been taken at the L.R.L. 25 inch bubble chamber. The data are spread over seven Kp>+p> momenta between 1.37 and 2.17 GeV/c.p> <p>Cross-sections have been measured for the reaction Kp>+p>p → pK°π+ which is dominated by the quasi-two body channels K∆ and K*N. Both these channels are strongly peripheral, as at other momenta. The decay of the ∆ is in good agreement with the predictions of the rho-photon analogy of Stodolsky and Sakurai. The data on the K*p channel show evidence of both pseudo scalar and vector exchange.p> <p>Cross-sections for the final state pKp>+p>π+π- shows a strong contribution from the quasi-two body channel K*∆. This reaction is also very peripheral even at threshold. The decay angular distributions indicate the reaction is dominated as at higher momenta by a pion exchange mechanism. The data are also in good agreement with the quark model predictions of Bialas and Zalewski for the K* and ∆ decay.p>

偏振分配角θp���高功率激光三倍频波形的影响

使用四阶龙格-库塔算法数值求解Ⅱ类-Ⅱ类偏振失配方案的三倍频稳态耦合波方程组。针对“神光Ⅱ”激光驱动器的三倍频系统，在二倍频匹配角吼和三倍频匹配角只均处于最佳匹配情况下，以1°为单位改变偏振分配角郇的偏离量，得到对应的三倍频波形特性的变化。研究表明，偏振分配角θp���于最佳理论匹配位时，对应的三倍频波形半峰全宽最窄，且波形上升沿抬起也最快；θp���最佳匹配位增加比从最佳匹配位减小对应的半峰全宽变宽更快，对应的上升沿抬起更慢。根据所得理论结果，在实验中调节偏振分配角θp���达到了改变三倍频输出波形特性，进而实现八

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