%0 Journal Article
%T COMPARISON OF IONIZATION CROSS-SECTION FORMULAS WITH EXPERIMENTS IN MICROANALYSIS<br>微分析中电离截面公式与实验的比较
%A TANG TAO
%A ZHANG SHU-YUAN
%A WU ZI-QIN
%A <br>唐涛
%A 张庶元
%A 吴自勤
%J 物理学报
%D 1991
%I 
%X Characteristic X-ray intensity ratios of M and L lines I(M)/I(L) from a series of pure elements were measured in the analytical electron microscope at 75-200kV. Compiling the previous measured ratios together, all the data have been compared with the calculated values from eight cross-section formulas after normalization in order to eliminate the uncertain parameters, leaving only the voltage dependence of the cross-section. These formulas can be divided into four groups for I(L)/I(K) or three groups for I(M)/I(L) ratios. Only one group, containing two formulas suggested by Fabre de la Ripelle and Schreiber and Wims, is in good agreement with all the experimental data.
%K 微区分析
%K 电离截面
%K 实验
%K 元素
%K 测量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=0F253181158EABFB203268FCAF7BA068&yid=116CB34717B0B183&vid=1371F55DA51B6E64&iid=B31275AF3241DB2D&sid=547650636788ED84&eid=6484E0C1B87D264C&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=3