1. Profile measurements of MeV ion microbeams in atmosphere extracted from single tapered glass capillaries with an end window
- Author
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Wei-Guo Jin, Yuka Hikima, Mitsumasa Mori, Mayuka Ikekame, Tokihiro Ikeda, Shunya Kawamura, and Tatsuya Minowa
- Subjects
Nuclear and High Energy Physics ,Materials science ,Capillary action ,business.industry ,Ion track ,Linear energy transfer ,02 engineering and technology ,Microbeam ,021001 nanoscience & nanotechnology ,01 natural sciences ,Ion ,Pelletron ,Optics ,0103 physical sciences ,Irradiation ,010306 general physics ,0210 nano-technology ,business ,Instrumentation ,Line (formation) - Abstract
Tapered glass capillary optics was utilized to produce MeV ion microbeams at the RIKEN Pelletron facility. A microbeam of 3 MeV He ions was used to irradiate HeLa cells and demonstrated an ion track consisting of double strand break points in the cell nucleus. A new microbeam line was developed with profile measurements of 2.8 MeV H+ microbeams in the atmosphere, using image recognition and knife-edge methods. After the suppression of the halo component in the microbeam, a smaller beam size was measured to be approximately 40 μm for the irradiation distance of 1 mm, which satisfied requirements of the planned applications.
- Published
- 2020
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