title: Experimental observations of soliton wave trains in electron beams.
abstract: The first experimental observation of a Korteweg-de Vries-type soliton wave train in intense electron beams is reported. A narrow, large-amplitude perturbation on a long-pulse beam is observed to steepen and spawn a soliton wave train. The pulse width and amplitude of each peak remain unchanged over a long propagation distance, and the amplitude is inversely proportional to the square of the width. Two such pulses are seen to pass through each other, emerging from the collision unchanged. The experimental results are reproduced by particle-in-cell simulations.
authors.affiliation: Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: Y C
authors.initials: YC
authors.lastname: Mo
authors.forename: R A
authors.initials: RA
authors.lastname: Kishek
authors.forename: D
authors.initials: D
authors.lastname: Feldman
authors.forename: I
authors.initials: I
authors.lastname: Haber
authors.forename: B
authors.initials: B
authors.lastname: Beaudoin
authors.forename: P G
authors.initials: PG
authors.lastname: O'Shea
authors.forename: J C T
authors.initials: JC
authors.lastname: Thangaraj