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A new laser ion source configuration was studied and realized in order to generate and accelerate ions of different elements. This ion source consisted of a laser-induced plasma from solid targets where the plume was made to expand before the action of the accelerating field. The accelerating field was reached by the application of two high voltage power supplies of different polarity. Therefore, the ions were made to undergo double acceleration that can imprint a maximum ion energy up to 160 keV per charge state. We analyzed the extracted charge from a Cu target as a function of the accelerating voltage at the laser fluences of 1.7 and 2.3 J/cm2. At 60 kV of total accelerating voltage and higher laser fluence, the maximum ion dose was 1012 ions/cm2. Under this last condition, the maximum output current was 5 mA and the emittance measured by the pepper pot method resulted in 0.22π  mm mrad. With this …
Taylor & Francis
Publication date: 
1 Oct 2010

A Lorusso, MV Siciliano, L Velardi, V Nassisi

Biblio References: 
Volume: 165 Issue: 6-10 Pages: 521-527
Radiation Effects & Defects in Solids: Incorporating Plasma Science & Plasma Technology