Energy efficiency of laser produced C- and Ta-ion sources

  • The conversion efficiency of laser energy into kinetic ion energy in a laser-produced plasma has been investigated for two quite different targets: graphite and tantalum. The laser energy (intensity) varied from several mJ to 200 mJ (1O^9 to 7 x 10^10 W cm-2) which is appropriate to many applications of a laser produced ion source. The conversion efficiency as a function of the laser energy was directly determined by differential measurements of the charge, kinetic energy and angular emission distribution of the plasma ions in absolute units. Whilst for the Ta target a nearly constant efficiency of about 30% was observed, the graphite result shows an unexpectedly strong enhancement of the transfer efficiency of up to 80% in the laser intensity range around 1.5 x l0^10 W cm-2. It is assumed that the results are related to the difference in the surface roughness of the targets.

Export metadata

  • Export Bibtex
  • Export RIS

Additional Services

Share in Twitter Search Google Scholar
Metadaten
Author:Axel Rupp, Klaus Rohr
URN (permanent link):urn:nbn:de:hbz:386-kluedo-15119
Document Type:Working Paper
Language of publication:English
Year of Completion:1991
Year of Publication:1991
Publishing Institute:Technische Universität Kaiserslautern
Contributing Corporation:Deutsche Forschungsgemeinschaft
Tag:Energietransfer; Tantalion
Carbon atomic ion; Ion source; Tantalum atomic ion; energie efficiency; laser-produced plasma
GND-Keyword:Ionenquelle ; Kohlenstoffion; Lasererzeugtes Plasma
Source:J. Phys. D: Appl. Phys., Vol. 24(1991), S. 2229
Faculties / Organisational entities:Fachbereich Physik
DDC-Cassification:530 Physik

$Rev: 12793 $