幂律电子谱轫致辐射积分的快速计算

发布时间：2018-06-12 03:45

  本文选题：太阳 + X射线　； 参考：《天文学报》2011年03期

【摘要】：SSW(Solar SoftWare)的能量电子产生X光子的轫致辐射积分计算发展到版本2时,其性能相比初始的版本1提高很多.在版本2的基础上,对这个积分进一步改进.通过对比几种轫致辐射积分方案,结果显示,最终的方案性能上比版本2可以快约2～5倍.在积分的精确性上比版本1及版本2均改进了很多,在缺省的积分控制精度下也不再产生光子谱的尖刺现象.而且,积分耗时不再敏感于积分上限取值.由于积分性能的提高,使得利用精确的轫致辐射截面计算轫致积分成为可能.结果显示,用精确轫致辐射截面比先前的近似截面积分的结果光子流量略小(≤4%),积分时间大约比先前使用近似截面多30%.
[Abstract]:The Bremsstrahlung integral (Bremsstrahlung integral) of energy electrons produced by energy electrons of SSW Solar Software has been developed to version 2, and its performance is much higher than that of the original version 1. This integral is further improved on version 2. By comparing several Bremsstrahlung integral schemes, the results show that the performance of the final scheme is about 2 or 5 times faster than that of version 2. The accuracy of the integral is much better than that of version 1 and version 2, and the pinching of photon spectrum is no longer produced under the default integral control precision. Moreover, the integral time consuming is no longer sensitive to the upper value of the integral. Due to the improvement of integral performance, it is possible to calculate the Bremsstrahlung integral by using accurate Bremsstrahlung cross section. The results show that the photon flux with the exact Bremsstrahlung radiation cross section is slightly smaller than that of the previous approximate cross section (鈮，

本文编号：2008182