Positron annihilation in glycerol in the range 258-423 K: an account for temperature dependent kinetics of the Ps bubble growth as seen in PALS spectra

摘要：

Following Ferrel (1957) it is commonly accepted that the final positronium (Ps) state in a liquid is the so-called bubble state. The Ps bubble grows due to an exchange repulsion between the electron in Ps and those in the surrounding molecules. In contrast to the solvated electron, no polarization interaction with environment is involved in the case of Ps because it is electrically neutral. For description of the kinetics of the Ps bubble growth we used the Navier-Stockes equation 1,2. In glycerol, the estimated time of the bubble formation varies in a very wide range (0.1 ns - 100 ns) in the experimentally studied temperature (T) interval (258 - 423 K).

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

作者单位: Institute for Theoretical and Experimental Physiscs,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: 72

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）