Creation of mixed beam from alloy target and couple of pure targets with lasera

To create mixed species ion beam with laser pulses, we investigated charge state distributions of plasma formed from both Al-Fe alloy targets and pure Al and Fe targets placed close together. With two targets, we observed that the two kinds of atoms were mixed when the interval of two laser pulses w...

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Bibliographic Details
Published in:Review of scientific instruments 2014-02, Vol.85 (2)
Main Authors: Romanelli, Mark, Cinquegrani, David, Kumaki Masafumi, Fuwa Yasuhiro, Munemoto Naoya, Kanesue Takeshi, Jin Qianyu, Okamura Masahiro, Horioka Kazuhiko
Format: Article
Language:English
Subjects:
Aluminum base alloys
Charge distribution
Drift
Iron
Laser beams
Scientific apparatus & instruments
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Summary:To create mixed species ion beam with laser pulses, we investigated charge state distributions of plasma formed from both Al-Fe alloy targets and pure Al and Fe targets placed close together. With two targets, we observed that the two kinds of atoms were mixed when the interval of two laser pulses was large enough (40 μs). On the other hand, when the interval was 0.0 μs, we observed fewer Fe ions and they did not mix well with the Al ions. The two species were mixed well in the plasma from the alloy target. Furthermore, we observed that specific charge states of Fe ions increased. From the results, it was determined that we can use two pure targets to mix two species whose difference of the drift velocity is large. On the other hand, we must use an alloy target when the drift velocities of the species are close.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4833015