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Application of cryotarget to laser ion source.
Jun Tamura1, Masahiro Okamura, Takeshi Kanesue
1Department of Energy Sciences, Tokyo Institute of Technology, Yokohama, Japan. jtamura@riken.jp
The Review of Scientific Instruments
|March 5, 2008
Summary
Researchers created solid argon targets for laser irradiation, generating stable argon ions up to 8+ charge state. This laser-produced plasma shows promise for future laser ion sources.
Area of Science:
- Plasma Physics
- Laser-Material Interactions
- Ion Source Technology
Background:
- Laser-produced plasmas are investigated for advanced applications.
- Rare gases require cooling to form solid targets for laser irradiation.
- Solid neon targets have been successfully used for laser ion generation.
Purpose of the Study:
- To evaluate laser-produced argon plasma for a future laser ion source.
- To develop a method for generating solid argon targets.
- To characterize the argon ions produced by laser irradiation.
Main Methods:
- Solid argon targets were generated by cooling gaseous argon.
- A neodymium-doped yttrium aluminum garnet laser irradiated the solid argon targets.
- Argon ions produced were analyzed for charge state and current density.
Main Results:
- Stable argon ions with charge stages up to 8+ were generated.
- The argon plasma characteristics were similar to those observed for neon.
- An ion current density of approximately 1.6 mA/cm² was measured at 2.3 m from the target.
Conclusions:
- The laser irradiation of solid argon targets is a viable method for generating argon ions.
- This technique is suitable for developing a future laser ion source.
- The results indicate potential for using rare gases in laser ion source applications.
