Pick-off quenching probability of ortho-positronium per collision with atoms and molecules
- 215 Downloads
Positronium quenching through its collisions with gaseous atoms and molecules is discussed. It is found that the values of the normalized pick-off quenching parameter, 1Zeff, at room temperature are roughly proportional to the geometric collisional cross-sections estimated from the radius of the positronium and those of the atoms and molecules derived from the viscosity. This suggests that the probabilities of the pick-off quenching of the thermalized positronium per collision with various atoms and molecules are almost constant.
KeywordsTopical issue: Electron/Positron Collision. Guest editors: Michael Brunger, Anne Lafosse, Gaetana Laricchia, Paulo Limao-Vieira and Nigel Mason
- 10.W.J. Moore, Physical Chemistry (Prentice-Hall, Inc., Englewood Cliffs, 1972)Google Scholar
- 21.N. Shinohara, Ph.D. thesis, The University of Tokyo, 2000Google Scholar
- 29.J. Ludlow, Ph.D. thesis, The Queen’s University of Belfast, 2003Google Scholar
- 30.J. Mitroy, pivate communicationGoogle Scholar