~4HeH^+核间距的实验测定  

EXPERIMENTAL DETERMINATION FOR ~4HeH^+ INTERNUCLEAR SEPARATION 

作　　者：缪竞威[1] 师勉恭[1] 杨百方[1] 唐阿友[1] N.Cue 

机构地区：[1]四川大学原子核科学技术研究所,成都610064

出　　处：《物理学报》2000年第6期1058-1063,共6页Acta Physica Sinica

基　　金：国家自然科学基金!(批准号 :19735 0 0 4;195 75 0 33);国家教育部重点科技项目!(批准号 :1997[12 9] )资助的课题&&

摘　　要：用MeV量级4 HeH+在超薄无衬碳膜中的库仑爆炸 ,获得高频离子源产生4 HeH+核间距的实测值为 0 .0 94±0 .0 0 3nm .发现4 HeH+与H+2 ,H+3 不一样 ,其核间距大小和离子源种类及离子源参数有密切关系 ,并从4 HeH+的形成机理与形成条件 ,解释了高频离子源和双等离子源产生4Through the Coulormb\|Explosion of MeV ion microcluster in self\|supported superthin carbon foil, the determined value of 4HeH + internuclear separation, generated by rf ion source,is obtained to be 0.094±0.003?nm. It is found that 4HeH + is different from H\++\-2 and H\++\-3, and their internuclear separations are closely related to the species and parameters of ion source. By means of the mechanism and condition of 4HeH + formation, the difference of internuclear sepapation for 4HeH + produced in the rf and deuplasmatron ion source was discussed.

关 键 词：离子微团簇 核间距 ^4HeH+ 实验测定 

分 类 号：O571.2[理学—粒子物理与原子核物理]