Quick change of ion species of heavy-ion microbeam by cocktail beam acceleration technique with the JAEA AVF cyclotron

Kurashima, Satoshi; Yoshida, Kazuo; Oikawa, Masakazu; Satoh, Takahiro; Miyawaki, Nobumasa; Yuyama, Takahiro; Okumura, Susumu; Kashiwagi, H.; Ishibori, I.; Nara, T.; Kamiya, Tomihiro; Fukuda, Mitsuhiro; Yokota, W.

doi:10.1016/j.nimb.2009.03.083

Cited by 15 publications

(6 citation statements)

References 8 publications

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“…On the other hand, particle detector for focused heavy ion microbeam is now under development at the Takasaki Advanced Radiation Research Institute, Japan Atomic Energy Agency (TARRI/JAEA). It requires durable, sensitive particle detectors especially for individual heavy ion irradiation experiment of 260 MeV Ne, 520 MeV Ar, or 220 MeV C from the azimuthally varying field (AVF) cyclotron accelerator [8,9]. In-situ detection techniques for these heavy ions were required for the precise evaluation of the single-hit experiments used for single living-cell irradiation [10,11], surface modification of polymers [12,13], and testing semiconductor devices [14,15].…”

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confidence: 99%

Continuous observation of polarization effects in thin SC-CVD diamond detector designed for heavy ion microbeam measurement

Kada

Iwamoto

Satoh

et al. 2014

Nuclear Instruments and Methods in Physics Research Section B:

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Continuous irradiation effects on a thin-film diamond detector were investigated for the utilization of these films as a detector for heavy ion microbeams. Temporal signal degradation in the energy spectrum was frequently observed during the focused heavy ion microbeam irradiation. To measure the temporal response to the each ion incidents, focused heavy ion microbeam with different beam fluence rates were irradiated to a Single Crystal (SC)-CVD diamond film detector with thickness of 50 μm. The responses to each ion were continuously observed and characterized by ion beam-induced charge (IBIC) measurement system. Heavy ions with short penetration path in diamond generate the large difference in mean path of electrons and holes, which is inverted by changing bias polarity. Signal degradation condition was relied on the bias polarity under the irradiation of heavy ions with short penetration length in the diamond. The continuous observation of IBIC signals revealed that temporal degradation in pulse height of signals, so called polarization effects, seems to be mainly caused by the hole trapping in this diamond crystal.

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confidence: 99%

Continuous observation of polarization effects in thin SC-CVD diamond detector designed for heavy ion microbeam measurement

Kada

Iwamoto

Satoh

et al. 2014

Nuclear Instruments and Methods in Physics Research Section B:

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“…The vertical and the horizontal sizes of the beam spot of 260 MeV-Ne are 1.6 and 1.2 lm and those of 520 MeV-Ar are 1.2 and 0.9 lm, respectively [9].…”

Section: Methodsmentioning

confidence: 93%

Transient current mapping obtained from silicon photodiodes using focused ion microbeams with several hundreds of MeV

Hirao

Onoda

Oikawa

et al. 2009

Nuclear Instruments and Methods in Physics Research Section B:

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“…In addition, using cocktail beam acceleration technology, this 40 Ar 14+ ion is capable of changing ion species to 20 Ne 7+ ion and vice versa, within a short duration [16]. This characteristic of the ion impressed on us to change ion species and enable microbeam irradiations of different ions species within a short beam time.…”

Section: Utilization Of New Ion Species For Microbeam Irradiationmentioning

confidence: 99%

Heavy-Ion Microbeams for Biological Science: Development of System and Utilization for Biological Experiments in QST-Takasaki

Funayama

2019

QuBS

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Target irradiation of biological material with a heavy-ion microbeam is a useful means to analyze the mechanisms underlying the effects of heavy-ion irradiation on cells and individuals. At QST-Takasaki, there are two heavy-ion microbeam systems, one using beam collimation and the other beam focusing. They are installed on the vertical beam lines of the azimuthally-varying-field cyclotron of the TIARA facility for analyzing heavy-ion radiation effects on biological samples. The collimating heavy-ion microbeam system is used in a wide range of biological research not only in regard to cultured cells but also small individuals, such as silkworms, nematode C. elegans, and medaka fish. The focusing microbeam system was designed and developed to perform more precise target irradiation that cannot be achieved through collimation. This review describes recent updates of the collimating heavy ion microbeam system and the research performed using it. In addition, a brief outline of the focusing microbeam system and current development status is described.

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Quick change of ion species of heavy-ion microbeam by cocktail beam acceleration technique with the JAEA AVF cyclotron

Cited by 15 publications

References 8 publications

Continuous observation of polarization effects in thin SC-CVD diamond detector designed for heavy ion microbeam measurement

Continuous observation of polarization effects in thin SC-CVD diamond detector designed for heavy ion microbeam measurement

Transient current mapping obtained from silicon photodiodes using focused ion microbeams with several hundreds of MeV

Heavy-Ion Microbeams for Biological Science: Development of System and Utilization for Biological Experiments in QST-Takasaki

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