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Journal Articles

Control of the size of etchable ion tracks in PVDF; Irradiation in an oxygen atmosphere and with fullerene C$$_{60}$$

Kitamura, Akane; Yamaki, Tetsuya*; Yuri, Yosuke*; Koshikawa, Hiroshi*; Sawada, Shinichi*; Yuyama, Takahiro*; Usui, Aya; Chiba, Atsuya*

Nuclear Instruments and Methods in Physics Research B, 460, p.254 - 258, 2019/12

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

Poly(vinylidene-fluoride) (PVDF) film is suitable for investigation of the size of etchable ion tracks because we can clearly judge the finish of the track etching and the surrounding bulk area remains due to the high chemical stability. Thereby we can measure the radius of ion tracks of each ion. In this study, we focused on two irradiation conditions for controlling the size of etchable ion tracks of PVDF films. One was irradiation in an oxygen atmosphere and the other was a fullerene (C$$_{60}$$$$^{+}$$) cluster beam irradiation. SEM observation showed that the size of pores became larger by irradiation in an oxygen atmosphere. It was found that the oxidation of ion tracks widened the size of etchable ion tracks. The C$$_{60}$$$$^{+}$$ irradiation caused larger etchable tracks on the PVDF surface. The result could represent the effect of local and simultaneous collisions by the swift aggregated ions.

Journal Articles

Development of profile monitors on target for high-intensity proton accelerators

Meigo, Shinichiro; Takei, Hayanori; Matsuda, Hiroki; Yuri, Yosuke*; Yuyama, Takahiro*

Proceedings of 16th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.515 - 519, 2019/07

no abstracts in English

Journal Articles

Development of profile monitors on target for high-intensity proton accelerators

Meigo, Shinichiro; Takei, Hayanori; Matsuda, Hiroki; Yuri, Yosuke*; Yuyama, Takahiro*

Proceedings of 15th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.1035 - 1039, 2018/08

no abstracts in English

Journal Articles

Investigation of phosphor materials for the real-time measurement of the transverse intensity distribution of large-area ion beams at the JAEA AVF cyclotron facility

Yuri, Yosuke; Yuyama, Takahiro; Ishizaka, Tomohisa; Koka, Masashi; Yamada, Naoto

Proceedings of 12th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.420 - 423, 2015/09

no abstracts in English

Journal Articles

Present status of TIARA at JAEA

Yuyama, Takahiro; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Ishizaka, Tomohisa; Chiba, Atsuya; Yamada, Keisuke; Yokoyama, Akihito; Usui, Aya; Miyawaki, Nobumasa; et al.

Proceedings of 12th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.302 - 304, 2015/09

no abstracts in English

Journal Articles

Formation of a uniform ion beam based on nonlinear focusing and its applications at the JAEA TIARA cyclotron

Yuri, Yosuke; Yuyama, Takahiro; Ishizaka, Tomohisa; Yoshida, Kenichi; Ishibori, Ikuo; Okumura, Susumu

Proceedings of 6th International Particle Accelerator Conference (IPAC '15) (Internet), p.236 - 238, 2015/06

Journal Articles

Technical development for the utilization of large-area uniform ion beams at the JAEA TIARA cyclotron

Yuri, Yosuke; Yuyama, Takahiro; Ishizaka, Tomohisa; Ishibori, Ikuo; Okumura, Susumu

Proceedings of 11th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.862 - 865, 2014/10

no abstracts in English

Journal Articles

Transformation of the beam intensity distribution and formation of a uniform ion beam by means of nonlinear focusing

Yuri, Yosuke; Yuyama, Takahiro; Ishizaka, Tomohisa; Ishibori, Ikuo; Okumura, Susumu

Plasma and Fusion Research (Internet), 9(Sp.3), p.4406106_1 - 4406106_4, 2014/06

Journal Articles

Formation of large-area heavy-ion uniform beams using multipole magnets in TIARA, JAEA

Yuri, Yosuke; Yuyama, Takahiro; Ishizaka, Tomohisa; Yoshida, Kenichi; Ishibori, Ikuo; Okumura, Susumu

Proceedings of 10th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.138 - 142, 2014/06

no abstracts in English

Journal Articles

Analysis of phase bunching in AVF cyclotron

Miyawaki, Nobumasa; Kurashima, Satoshi; Kashiwagi, Hirotsugu; Okumura, Susumu; Yoshida, Kenichi; Yuri, Yosuke; Yuyama, Takahiro; Ishizaka, Tomohisa; Ishibori, Ikuo; Nara, Takayuki

JAEA-Review 2013-059, JAEA Takasaki Annual Report 2012, P. 158, 2014/03

Journal Articles

Study on ion irradiation response of Gafchromic films for the intensity distribution measurement of a large-area beam

Yuri, Yosuke; Ishizaka, Tomohisa; Yuyama, Takahiro; Ishibori, Ikuo; Okumura, Susumu

Nuclear Instruments and Methods in Physics Research A, 727, p.40 - 45, 2013/11

 Times Cited Count:3 Percentile:67.55(Instruments & Instrumentation)

Journal Articles

Microscopic evaluation of the absolute fluence distribution of a large-area uniform ion beam using the track-etching technique

Kitamura, Akane; Yamaki, Tetsuya; Yuri, Yosuke; Sawada, Shinichi; Yuyama, Takahiro

Nuclear Instruments and Methods in Physics Research B, 314, p.47 - 50, 2013/11

 Times Cited Count:1 Percentile:86.37(Instruments & Instrumentation)

Journal Articles

Ion-irradiation response of Gafchromic films and their application to the measurement of the transverse beam intensity distribution

Yuri, Yosuke; Ishizaka, Tomohisa; Yuyama, Takahiro; Ishibori, Ikuo; Okumura, Susumu

Proceedings of 25th North American Particle Accelerator Conference (NA-PAC '13) (Internet), p.1388 - 1390, 2013/09

Journal Articles

Calibration of gafchromic dosimetry films for large-area ion-beam distribution measurement

Ishizaka, Tomohisa; Imai, Koji*; Yuri, Yosuke; Yuyama, Takahiro; Ishibori, Ikuo; Okumura, Susumu

Proceedings of 9th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.594 - 596, 2013/08

no abstracts in English

Journal Articles

Use of Gafchromic films to measure the transverse intensity distribution of a large-area ion beam

Yuri, Yosuke; Ishizaka, Tomohisa; Yuyama, Takahiro; Ishibori, Ikuo; Okumura, Susumu; Kitamura, Akane; Yamaki, Tetsuya; Sawada, Shinichi

Proceedings of 1st International Beam Instrumentation Conference (IBIC 2012) (Internet), p.531 - 533, 2013/06

Journal Articles

Real-time beam profile measurement system using fluorescent screens

Yuyama, Takahiro; Yuri, Yosuke; Ishizaka, Tomohisa; Ishibori, Ikuo; Okumura, Susumu

Proceedings of 1st International Beam Instrumentation Conference (IBIC 2012) (Internet), p.246 - 248, 2013/06

Journal Articles

Use of gafchromic dosimetry films to measure a large-area ion-beam distribution

Ishizaka, Tomohisa; Imai, Koji*; Yuri, Yosuke; Yuyama, Takahiro; Ishibori, Ikuo; Okumura, Susumu

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 157, 2013/01

Journal Articles

Status report on technical developments of the JAEA AVF cyclotron

Kurashima, Satoshi; Kashiwagi, Hirotsugu; Miyawaki, Nobumasa; Okumura, Susumu; Yoshida, Kenichi; Yuri, Yosuke; Yuyama, Takahiro; Ishizaka, Tomohisa; Ishibori, Ikuo; Nara, Takayuki

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 154, 2013/01

no abstracts in English

Journal Articles

Operation of the AVF cyclotron

Okumura, Susumu; Ishibori, Ikuo; Kurashima, Satoshi; Yoshida, Kenichi; Yuyama, Takahiro; Ishizaka, Tomohisa; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; Yuri, Yosuke; Nara, Takayuki; et al.

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 172, 2013/01

The AVF cyclotron was operated from May 9th in fiscal 2011 and all the planned experiments on April were cancelled due to scheduled blackouts originated from the Great East Japan Earthquake. The total operation time amounted to 3,038.4 hours. The extended operation from Friday evening to Saturday evening was carried out eight times in order to supply the cancellation on April. The regular yearly overhaul and maintenance were carried out.

Journal Articles

Large-area uniform ion beam formed by the nonlinear beam optics at the JAEA TIARA cyclotron

Yuri, Yosuke; Yuyama, Takahiro; Ishizaka, Tomohisa; Ishibori, Ikuo; Okumura, Susumu

Proceedings of 10th International Workshop on Radiation Effects on Semiconductor Devices for Space Applications (RASEDA-10) (Internet), p.97 - 100, 2012/12

80 (Records 1-20 displayed on this page)