NDLI: A random walk approach to the diffusion of positrons in gaseous media

Content Provider	Springer Nature Link
Author	Girardi Schappo, M. Tenfen, W. Arretche, F.
Copyright Year	2013
Abstract	In this work, we present a random walk model to study the positron diffusion in gaseous media. The positron-atom interaction is described through positron-target cross sections. The main idea is to obtain how much energy a positron transfer to the environment atoms, through ionizations and electronic excitations until its annihilation, taking the ratio between each energetically available collision channel to the total one as the probability for each process to occur. As a first application, we studied how the positron diffuse in gases of helium, neon, argon and their mixtures. To characterize the positron dynamics in each system, we calculated the radiation profile generated from the annihilation, their diffusion profiles and the most probable distances for excitation and ionization.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	14346060
Journal	The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics
Volume Number	67
Issue Number	6
e-ISSN	14346079
Language	English
Publisher	Springer-Verlag
Publisher Date	2013-06-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Atomic and molecular collisions Atomic, Molecular, Optical and Plasma Physics Physical Chemistry Quantum Physics Quantum Information Technology, Spintronics Spectroscopy/Spectrometry Nonlinear Dynamics
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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