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A.乔尔索(A.Ghiorso)等在今年四月宣布他们首先完成了原子序数101的元素的合成及其化学鉴定。用非常强而密的氦离子(即α质点)轰击一个很小的99~(253)靶,因而产生少数能自动分裂的原子,这些原子在阳离子交换树脂柱冲到准铥(Eka-Tu)的位置。进行实验时曾用了特殊的技巧。在克罗宽(Crocker)实验室60吋电子旋迴加速器的一个特殊位置上,使非常集中而又平行的48百万电子伏特(Mev)的氦离子流(在1/32×1/4吋的面积上是10微安培)通过递降吸收器,再通过千分之二吋厚
A. Ghiorso et al announced in April this year that they first completed the synthesis and chemical characterization of the atomic number 101 elements. Bombardment of a very small 99- (253) target with a very strong and dense helium ion (ie, a-particle) results in a small number of atoms that are capable of spontaneous disintegration that occur when the cation exchange resin column rushes to Eka-Tu s position. Special techniques were used during the experiment. At a particular location on the Crocker’s lab 60-inch electron cyclotron, a very concentrated and parallel flow of helium ions at 48 MeV (at 1/32 x 1/4 inch The area is 10 microamps) through descending absorbers, and then through two-thousandths of an inch thick