通用组合型层析摄影反演

A GENERAL PURPOSE TOMOGRAPHIC PROGRAM WITH COMBINED INVERSIONS

本文采用Ｂｅｓｓｅｌ函数［１］与Ｚｅｒｎｉｃｋｅ函数［２］组合的方式，编制了一通用的Ｔｏｍｏｇｒａｐｈｙ程序、它既可用于撕裂模磁岛结构的研究．又可用于杂质剖面的反演。结果说明，这种组合方式既有Ｂｅｓｓｅｌ函数的优点──在边界无毛齿，又有Ｚｅｒｎｉｃｋｅ函数的优点──在中心反演精度较高。我们还用此程序重建了撕裂模磁岛结构，得到了好的重建结果。

A general tomographic program has been developed by combining the Bessel expansionwith the Zernicke expansion. It is useful for studying of the magnetic island structure of thetearing mode and in reconstructing the density profiles of impurities in tokamak plasmas.This combined method have the advantages of both expansions,i.e.there will be no spurious images in the edge and it will be of high inverse precision in the center of plasma.