EXPERIMENTAL DEMONSTRATION OF DYNAMIC FOCUSING OF A RELATIVISTIC ELECTRON BUNCH BY AN OVERDENSE PLASMA LENS

Authors
HAIRAPETIAN G DAVIS P CLAYTON CE JOSHI C HARTMAN SC PELLEGRINI C KATSOULEAS T
Citation
G. Hairapetian et al., EXPERIMENTAL DEMONSTRATION OF DYNAMIC FOCUSING OF A RELATIVISTIC ELECTRON BUNCH BY AN OVERDENSE PLASMA LENS, Physical review letters, 72(15), 1994, pp. 2403-2406
Citations number
19
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
72
Issue
15
Year of publication
1994
Pages
2403 - 2406
Database
ISI
SICI code
0031-9007(1994)72:15<2403:EDODFO>2.0.ZU;2-F
Abstract
Dynamic focusing of a 3.8 MeV electron bunch, a few collisionless skin depths long approximately 3c/omega(p), by an overdense, thick plasma lens has been demonstrated. Because of electron inertial effects, the head of the bunch is virtually unaffected by the lens while the rest i s focused to varying degree. Time-resolved measurements performed 31 c m downstream of the plasma lens show that, in time, the bunch pinches from an initial size of 2.7 mm (FWHM) to about 0.57 mm and then expand s, in reasonable agreement with theory.