Effect of the dynamical collision frequency on quantum wakefields. Issue 4 (17th February 2019)

• Record Type: Journal Article
• Authors: Moldabekov, Zh.A.; Amirov, S.M.; Ludwig, P.; Bonitz, M.; Ramazanov, T.S.
• Other Names: Clérouin Jean guestEditor.; Mikikian Maxime guestEditor.
• Is Part Of: Contributions to plasma physics. Volume 59:Issue 4/5(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-02-17
• Subjects: dense plasmas -- dynamical collision frequency -- dynamical screening -- Lenard–Balescu approximation -- quantum wakefield; Plasma (Ionized gases) -- Periodicals; Electronic journals; 530.44
• DOI: 10.1002/ctpp.201800161
• Languages: English
• ISSNs: 0863-1042

Abstract

Abstract : Previous papers on the quantum wakefield around an ion moving in a dense plasma have considered the collision frequency in the static approximation. In this work, we present the results of the dynamically screened ion potential taking into account the dynamical electron–ion collision frequency. The Lenard–Balescu dynamical collision frequency and various approximations to it are considered. As a main result of our investigation for the subsonic, sonic, and supersonic regimes, we find that the frequency dependence of collisions can be safely discarded if the electronic streaming velocity (relative to an ion) is comparable to or less than the electronic Fermi velocity.