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Title: Extraction of small-diameter beams from single-component plasmas

Abstract

A nondestructive technique is described to extract small-diameter beams from single-component plasmas confined in a Penning-Malmberg trap following radial compression using a rotating electric field. Pulsed beams with Gaussian radial profiles and diameters as small as 50 {mu}m are extracted from electron plasmas initially 2 mm in diameter. A simple theory for the beam diameter predicts 4{lambda}{sub D} (full width to 1/e), where {lambda}{sub D} is the Debye length, in good agreement with experimental measurements on electron plasmas. Applications and extensions of this technique to create bright, finely focused beams of positrons and other scarce particles are discussed.

Authors:
; ;  [1]
  1. Department of Physics, University of California, San Diego, La Jolla, California 92093 (United States)
Publication Date:
OSTI Identifier:
20971838
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 90; Journal Issue: 8; Other Information: DOI: 10.1063/1.2709522; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 43 PARTICLE ACCELERATORS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DEBYE LENGTH; ELECTRIC FIELDS; ELECTRONS; PLASMA; POSITRON BEAMS; POSITRON SOURCES; POSITRONS

Citation Formats

Danielson, J. R., Weber, T. R., and Surko, C. M. Extraction of small-diameter beams from single-component plasmas. United States: N. p., 2007. Web. doi:10.1063/1.2709522.
Danielson, J. R., Weber, T. R., & Surko, C. M. Extraction of small-diameter beams from single-component plasmas. United States. doi:10.1063/1.2709522.
Danielson, J. R., Weber, T. R., and Surko, C. M. Mon . "Extraction of small-diameter beams from single-component plasmas". United States. doi:10.1063/1.2709522.
@article{osti_20971838,
title = {Extraction of small-diameter beams from single-component plasmas},
author = {Danielson, J. R. and Weber, T. R. and Surko, C. M.},
abstractNote = {A nondestructive technique is described to extract small-diameter beams from single-component plasmas confined in a Penning-Malmberg trap following radial compression using a rotating electric field. Pulsed beams with Gaussian radial profiles and diameters as small as 50 {mu}m are extracted from electron plasmas initially 2 mm in diameter. A simple theory for the beam diameter predicts 4{lambda}{sub D} (full width to 1/e), where {lambda}{sub D} is the Debye length, in good agreement with experimental measurements on electron plasmas. Applications and extensions of this technique to create bright, finely focused beams of positrons and other scarce particles are discussed.},
doi = {10.1063/1.2709522},
journal = {Applied Physics Letters},
number = 8,
volume = 90,
place = {United States},
year = {Mon Feb 19 00:00:00 EST 2007},
month = {Mon Feb 19 00:00:00 EST 2007}
}