~4HeH^+核间距的实验测定

EXPERIMENTAL DETERMINATION FOR ~4HeH^+ INTERNUCLEAR SEPARATION 

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4

Through 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.