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The NATO Advanced Research Workshop on Atomic Physics with
Positrons, which was held at University College London during 15-18
July 1987, was the fourth meeting in a series devoted to the
general theme of positron colli sions in gases. Previous meetings
have been held at York University, Toronto (1981); Royal Holloway
College, Egham (1983) and Wayne State Uni versity, Detroit (1985).
Recent very significant improvements in positron beam currents, due
to the development of more efficient moderators and the use of more
intense positron sources, are making possible an increasingly
sophisticated range of experiments in atomic collision physics.
Whereas a few years ago only total scattering cross sections could
be determined, measurements can now be made of various partial and
differential cross sections. Intense positron beams are also being
used to produce positronium beams and already, as reported here,
preliminary investigations have been made of collisions of
positronium with several target systems. These experimental
developments have stimulated, and been stimulated by, steady, if
somewhat less spectacu1ar, progress in associated theoretical
studies. Both aspects of the field are well represented in these
Proceed ings."
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 introduction to the field,
discussing the background to low energy positron beams, and then
covers topics such as total scattering cross sections, elastic
scattering, positronium formation, excitation and ionization,
annihilation and positronium interactions. Each chapter contains a
blend of theory and experiment, giving a balanced treatment of all
the topics. The book will be useful for graduate students and
researchers in physics and chemistry. It is ideal for those wishing
to gain rapid, in-depth knowledge of this unique branch of atomic
physics.
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