Behaviour of e+ in water in the range 273 – 373 K: influence of intratrack processes

摘要：

It has been experimentally verified in various laboratories that the triplet positronium (o-Ps) lifetime in water decreases with temperature (T). This result was obtained by means of the standard exponential deconvolution of the PALS spectra. At first sight, this appears to contradict the existence of the Ps bubble state, which is now most generally accepted: thus, the surface tension of water, which decreases with T, should lead to an increase in the Ps bubble size, and, therefore, to a decrease in the pick-off annihilation rate.

作者: S.V.Stepanov G.Duplatre V.M.Byakov

作者单位: Institute for Theoretical and Experimental Physics,117218,Moscow,Russia Institut Pluridisciplinaire Henri Curien,CNRS/IN2P3,BP 28 67037 Strasbourg,Cedex 2,France

会议类型: 国际会议

会议名称: 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)

会议地点: 武汉

会议语种:英文

页码: 23

在线出版日期: 2008-05-11（万方平台首次上网日期，不代表论文的发表时间）