Open AccessDOI
Positronium collision physics
G. Laricchia,H. R. J. Walters +1 more
- Vol. 35, Iss: 6, pp 305-351
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In this article, a combined experimental and theoretical overview of positronium collisions with atoms and molecules is presented, including the Born approximation, coupled-state methods, variational techniques, stabilization methods, model potentials, Monte Carlo methods, impulse approximation, and resonances.Abstract:
This article presents a combined experimental and theoretical overview of positronium collisions with atoms and molecules. It starts with a description of the basic properties of positronium. This is followed by a survey of experimental methods. These include positron annihilation lifetime spectroscopy (PALS and SSPALS), angular correlation of annihilation radiation (ACAR), Doppler broadening (DB), positronium beam experiments, and many-positron techniques. Theoretical developments are next described, including the Born approximation, coupled-state methods, variational techniques, stabilization methods, model potentials, Monte Carlo methods, the impulse approximation, and resonances. There then follows a critical comparison between experiment and theory on low-energy momentum transfer cross-sections, total cross-sections, integral and differential ionization cross-sections, and positronium-positronium scattering. Comparison is also made with equivelocity free electron and positron scattering, highlighting the remarkable result that positronium scattering tends to follow that of a bare electron. The article concludes with a look towards future directions.read more
Citations
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The extreme light infrastructure-nuclear physics (ELI-NP) facility: new horizons in physics with 10 PW ultra-intense lasers and 20 MeV brilliant gamma beams.
S. Gales,Kazuo Tanaka,D. L. Balabanski,F. Negoita,Dan Stutman,Ovidiu Tesileanu,C. A. Ur,Daniel Ursescu,I Andrei,Stefan Ataman,Mihail Octavian Cernaianu,Loris D’Alessi,I. Dancus,Bogdan Diaconescu,Nikolay Djourelov,D. M. Filipescu,Petru Ghenuche,D. Ghita,Catalin Matei,Keita Seto,Ming Zeng,N. V. Zamfir +21 more
TL;DR: The science and examples of societal applications at reach with these electromagnetic probes with much improved performances provided at this new facility will be discussed with a special focus on day-one experiments and associated novel instrumentation.
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Roadmap on photonic, electronic and atomic collision physics: II. Electron and antimatter interactions
Stefan Schippers,Emma Sokell,Friedrich Aumayr,Hossein Sadeghpour,Kiyoshi Ueda,Igor Bray,Klaus Bartschat,Andrew James Murray,Jonathan Tennyson,Alexander Dorn,Masakazu Yamazaki,Masahiko Takahashi,Nigel J. Mason,Oldřich Novotný,Andreas Wolf,Léon Sanche,Martin Centurion,Yasunori Yamazaki,G. Laricchia,Clifford M Surko,James Sullivan,Gleb Gribakin,Daniel Wolf Savin,Yuri Ralchenko,Ronnie Hoekstra,Gerry O'Sullivan +25 more
TL;DR: In this article, three roadmaps on photonic, electronic and atomic collision physics were published to celebrate the 60th anniversary of the ICPEAC conference and to provide detailed insight into the many body quantum dynamics of leptonic collisions with targets of varying complexity.
Journal ArticleDOI
Calculations of positronium-atom scattering using a spherical cavity
A. R. Swann,Gleb Gribakin +1 more
TL;DR: In this paper, the effect of van der Waals interaction on particle scattering by noble-gas atoms (He, Ne, Ar, Kr, and Xe) was studied in the frozen target approximation and with inclusion of the van derWaals interaction.
Journal ArticleDOI
Positronium collisions with rare-gas atoms
TL;DR: In this article, the elastic scattering of positronium (Ps) by the Xe atom using the recently developed pseudopotential method was calculated using the binary-encounter method for Ps collisions with an atomic target.
Journal ArticleDOI
A high-quality and energy-tunable positronium beam system employing a trap-based positron beam.
TL;DR: The obtained Ps beam, having a much higher quality than those reported hitherto, will open up a new field of experimental investigations, such as Ps interacting with a variety of materials and fundamental studies on Ps spectroscopy.
References
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