This chapter is a short personal account of some of the milestones in positron beam research since a Princeton graduate student's thesis set the ball rolling - albeit slowly - in 1958.Positron Beams And Their Applicationsdoi:10.1142/9789812817754_0001P. ...
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Positron beams and their applications (World Scientific, 2000). 45. Asoka-Kumar, P. et al. Increased Elemental Specificity of Positron Annihilation Spectra. Phys. Rev. Lett. 77, 2097 (1996). 46. Mijnarends, P. E., Kruseman, A. C., van Veen, A., Schut, H. & Bansil, A. Two-...
ElectronsSpin Polarized Low Energy Positron Beams and Their ApplicationsDevelopment of High Brightness Slow Positron BeamsCreation of a Monoenergetic Positronium Beam in a Gas and Measurement of Positron Survivial Fractions in a GasDifferences in Atomic Collisions by High Velocity Protons and PositronsII...
Applications of LINAC-based positron beams in atomic physics are described. The following broad subject areas are treated; e + mobility and momentum transfer cross section determinations, angularly resolved and integral cross sections for e + -atomic processes plus charge transfer (Ps formation) type...
Positron beams have many applications and there are many different concepts for positron sources. In this paper, only positron source techniques for linear colliders are covered. In order to achieve high luminosity, a linear collider positron source should have a high beam current, high beam energy...
Furthermore, it can be utilized to produce energy tunable Ps beams. The stability of Ps− and the positronium positive ion (e+e−e+, Ps+) was first discussed by Wheeler in 1946 in his paper “Polyelectrons” [1]. Wheeler proposed the formation of Ps− by the interaction of a ...
1b. Here we depict the pulsed generation of Ps gas in vacuum, three spatially superimposed laser beams and the acquisition of excitation signals for the 1S–2P transitions. The experiment was conducted at the Slow Positron Facility of the Institute of Materials Structure Science, the High Energy...
(3), and E is a real-valued energy of the whole system, i.e., the sum of the collision energy and the energy of the target state before collision. For spin-unpolarized positron and atomic beams, the total annihilation cross section is calculated by the statistically weighted average (117...
A particle source is a device producing particle beams with well-defined and controlled intensity, divergence, mean energy, and energy spread. Electron beams are used in science and technology to both investigate and modify matter. Applications in science mainly concern material investigation, processing...