Recent advances in the study of solid surfaces and thin films using variable-energy positron
beams are reviewed. In the first part the authors discuss the process of positron moderation …

Positron Annihilation in Chemistry gives a critical review of the chemistry-oriented positron
annihilation research. The only three light particles participating in low energy physics and …

The field of experimental positronium physics has advanced significantly in the last few
decades, with new areas of research driven by the development of techniques for trapping …

This book provides a comprehensive and up-to-date account of the field of low energy
positrons and positronium within atomic and molecular physics. It begins with an …

The effect of spatial and other external confinements on the ground and excited state energy
levels of many electron atoms, ions and exotic systems is discussed. Special emphasis is …

Reduction of background using a coincidence-detection system in Doppler-broadening
spectroscopy of positron-annihilation radiation allows us to examine the contribution of high …

The positronium negative ion (Ps−), the system composed of two electrons and a positron,
has been reinvestigated theoretically. Using a Hylleraas wave function with two nonlinear …

This paper is a review of new developments in the experimental field of the efficient
emission of the positronium negative ion, a bound state of one positron and two electrons …

The ground-state energy of positronium negative ions, Ps−, is calculated using double-basis-
set Hylleraas functions in which four nonlinear parameters are used. The optimized result of …

Photodetachment of the positronium negative ion, a bound state of one positron and two
electrons, has been observed. Development of a method to produce the ions efficiently …