Transverse oscillations of a long-pulse electron beam on a laser-formed channel

Author

Smith, John R. ; Shokair, Isaac R. ; Struve, Kenneth W. ; Schamiloglu, Edl ; Werner, Paul W. ; Lipinski, Ronald J.

Author_Institution

Titan/Spectron, Albuquerque, NM, USA

Volume

19

Issue

5

fYear

1991

fDate

10/1/1991 12:00:00 AM

Firstpage

850

Lastpage

854

Abstract

An intense relativistic electron beam may be transported in low-pressure gas using an ion channel which focuses and guides the beam. The beam can be unstable to the growth of transverse oscillations caused by the electric force between the beam and channel-the ion hose instability. Beam propagation on channels created by photoionization of gas with an excimer laser is discussed. Ion hose oscillations have been recorded which have a betatron wavelength of approximately 1.5 m. The growth rate of the ion hose instability in the linear regime was measured as 1.67±0.45. At this level of growth, the amplitude of beam oscillations equals the channel radius after a period of one-third of an ion oscillation time

Keywords

beam handling techniques; electron beams; photoionisation; plasma instability; plasma oscillations; relativistic plasmas; 1.5 m; amplitude; beam guide; beam propagation; beam transport; betatron wavelength; channel radius; electric force; excimer laser; focusing; growth rate; ion channel; ion hose instability; laser-formed channel; linear regime; long-pulse electron beam; low-pressure gas; photoionization; relativistic electron beam; transverse oscillations; unstable beam; Electron beams; Gas lasers; Hoses; Ion beams; Ionization; Laboratories; Laser beams; Optical propagation; Particle beams; Plasma measurements;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.108423

Filename

108423