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Journal Articles

Construction of a 300-keV compact ion microbeam system with a three-stage acceleration lens

Ishii, Yasuyuki; Okubo, Takeru; Kojima, Takuji; Kamiya, Tomihiro

Nuclear Instruments and Methods in Physics Research B, 332, p.156 - 159, 2014/08

 Times Cited Count:6 Percentile:47.04(Instruments & Instrumentation)

Journal Articles

Development of real-time position detection system for single-ion hit

Yokoyama, Akihito; Kada, Wataru*; Sato, Takahiro; Koka, Masashi; Yamamoto, Shunya; Kamiya, Tomihiro; Yokota, Wataru

Nuclear Instruments and Methods in Physics Research B, 332, p.334 - 336, 2014/08

 Times Cited Count:1 Percentile:87.79(Instruments & Instrumentation)

A system is developed for the real-time position detection of single-ions which hits a target with spatial accuracy about 1 $$mu$$m. The system combines highly luminescent, sensitive, scintillators with a high sensitivity luminescence detection system. The real-time detection system contains a Al$$_{2}$$O$$_{3}$$:Eu scintillator, Eu implanting into $$alpha$$-Al$$_{2}$$O$$_{3}$$. A single-crystal scintillator has been selected since position resolution of emission for powdery scintillator is limited by a grain size, several micrometers for ZnS for example. When the material is irradiated with an electron or ion beam, the Eu is activated and strong luminescence occurs. The detection system includes an image intensifier tube and an electron multiplier CCD camera. The results show that our system can be sufficiently sensitive to detect the hit of a single-ion in real time through simple improvement in emission intensity of the scintillator.

Journal Articles

Real-time single-ion hit position detecting system for cell irradiation

Sato, Takahiro; Koka, Masashi; Kada, Wataru*; Yokoyama, Akihito; Kamiya, Tomihiro

Nuclear Instruments and Methods in Physics Research B, 332, p.242 - 244, 2014/08

 Times Cited Count:5 Percentile:53.52(Instruments & Instrumentation)

Journal Articles

Simultaneous ion luminescence imaging and spectroscopy of individual aerosol particles with external proton or helium microbeams

Kada, Wataru*; Sato, Takahiro; Yokoyama, Akihito; Koka, Masashi; Kamiya, Tomihiro

Nuclear Instruments and Methods in Physics Research B, 332, p.42 - 45, 2014/08

 Times Cited Count:9 Percentile:32.03(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Sputtering of SiN films by 540 keV C$$_{60}$$$$^{2+}$$ ions observed using high-resolution Rutherford backscattering spectroscopy

Nakajima, Kaoru*; Morita, Yosuke*; Kitayama, Takumi*; Suzuki, Motofumi*; Narumi, Kazumasa; Saito, Yuichi; Tsujimoto, Masahiko*; Isoda, Shoji*; Fujii, Yoshikazu*; Kimura, Kenji*

Nuclear Instruments and Methods in Physics Research B, 332, p.117 - 121, 2014/08

 Times Cited Count:7 Percentile:41.09(Instruments & Instrumentation)

Journal Articles

Fabrication of fine imaging devices using an external proton microbeam

Sakai, Takuro; Yasuda, Ryo; Iikura, Hiroshi; Nojima, Takehiro; Koka, Masashi; Sato, Takahiro; Ishii, Yasuyuki; Oshima, Akihiro*

Nuclear Instruments and Methods in Physics Research B, 332, p.238 - 241, 2014/08

 Times Cited Count:0 Percentile:100(Instruments & Instrumentation)

We have successfully fabricated novel microscopic imaging devices made from UV/EB curable resin using an external scanning proton microbeams. The devices are micro-structured fluorescent plates that consist of an array of micro-pillars that align periodically. The base material used in the pillars is UV/EB curable resin and each pillar contains phosphor grains. The pattern exposures were performed using a proton beam writing technique. The height of the pillars depends on the range of the proton beam. Optical microscopy and scanning electron microscopy have been used to characterize the samples. The results show that the fabricated fluorescent plates are expected to be high-spatial-resolution imaging devices.

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