Regularities of Plasma-Immersion Formation of Long-Pulse High-Intensity Titanium Ion Beams

Research output: Contribution to journalArticle

Abstract

The results of experimental investigations on plasma-immersion formation of ballistically focused beams of low-energy titanium ions with the pulse duration up to 30 μs are presented. The processes of neutralization of the space charge of high-intensity beams upon increasing the ion-current density by a few orders of magnitude during their focusing are addressed. The conditions of preliminary injection of the metal plasma, its parameters, the formation of the beam plasma during residual-gas ionization and secondary and thermionic emissions are shown to be of critical importance for an effective transport of these beams in the equi-potential drift space. It is demonstrated that the use of a disc electrode, preventing the macroparticles from penetrating the region of the ballistic beam focusing, increases the efficiency of long-pulse titanium ion beam transport and simultaneously reduces the probability of instability development.

Original languageEnglish
Pages (from-to)1338-1346
Number of pages9
JournalRussian Physics Journal
Volume61
Issue number7
DOIs
Publication statusPublished - 1 Nov 2018

Fingerprint

regularity
submerging
titanium
ion beams
pulses
gas ionization
residual gas
thermionic emission
secondary emission
ballistics
ion currents
space charge
pulse duration
injection
current density
electrodes
metals
ions
energy

Keywords

  • long-pulse ion beams
  • plasma-immersion extraction
  • titanium

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Regularities of Plasma-Immersion Formation of Long-Pulse High-Intensity Titanium Ion Beams. / Ryabchikov, A. I.; Sivin, D. O.; Shevelev, A.; Ananyin, P. S.

In: Russian Physics Journal, Vol. 61, No. 7, 01.11.2018, p. 1338-1346.

Research output: Contribution to journalArticle

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