Dipositronium and other two-positronium compounds
Dipositronium, Ps2, was recently prepared 1. This is significant because: ·It is the first laboratory observation of a molecule that contains more than one positron; ·It is the most symmetrical molecule possible; ·It is the most non-rigid (floppiest) molecule possible; ·The interval between the theoretical establishment of its existence 2 and its laboratory observation 1 is inordinately long-60 years; and ·An extension of the technology developed for the Ps2 observation may soon lead to an observation of the Bose-Einstein condensation of positronium and the development of a gamma ray laser. We briefly discuss the symmetry of Ps2 and how an understanding of it will underlie its characterization in the future. Ps2O and CPs2 might be the next two-positron compounds to be prepared and characterized in the laboratory. A discussion of the contrasting eigenstates of these two molecules is given. An understanding of these states is required in order to identify them.
dipositronium wave function spin dipositronium ozide dipositronium methylene
D.M.Schrader
Chemistry Department,Marquette University,P.O.Box 1881,Milwaukee,WI 53201-1881,USA
国际会议
第九届国际正电子与正电子素国际会议(9th International Workshop on Positron and Positronium Chemistry)(PPC–9)
武汉
英文
25-29
2008-05-11（万方平台首次上网日期，不代表论文的发表时间）