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Kada, Wataru; Kamiya, Tomihiro; Iwamoto, Naoya; Onoda, Shinobu; Grilj, V.*; Skukan, N.*; Makino, Takahiro; Koka, Masashi; Sato, Takahiro; Jak
i
, M.*; et al.
Transactions of the Materials Research Society of Japan, 38(2), p.279 - 282, 2013/07
Diamond is interested by many researchers as an excellent candidate material with advantages in the radiation-hardness. For the time-resolved detection of single-ions with several hundred MeV, transmission E detector using thin film CVD diamond is now under investigation for the futuristic utilization in a microbeam line of the AVF cyclotron at JAEA/Takasaki TIARA facility as replacing materials of the beam extraction window. In this research, a Single Crystalline (SC) 50 m thick CVD diamond film ion detector was fabricated for the investigation of the responses and radiation hardness under the focused ion microbeam irradiation. Transient Ion Beam Induced Current (TIBIC) experiment was executed by single hit irradiation of 15 MeV O
scanning area of 50 
m
and the transient signals with time width of several nano-secounds were consecutively recorded by a high speed (15 GHz) Digital Storage Oscilloscope during the irradiation. The decreases in the individual pulse height was observed by increasing the total amount of the ion dose irradiated in the focused area. These changes were recovered in temporal conversion of applied bias voltages thus trend of decrease were able to be controlled by changing bias settings and irradiation conditions during the experiments.
Kada, Wataru; Sato, Takahiro; Makino, Takahiro; Onoda, Shinobu; Koka, Masashi; Oshima, Takeshi; Kamiya, Tomihiro; Grilj, V.*; Skukan, N.*; Jaksic, M.*
KEK Proceedings 2012-8, p.89 - 98, 2012/12
Transmissive particle detectors using thin-film diamond were newly developed for the individual detection of single-hit of heavy ions. Two type of the detectors were developed using poly- and single-crystalline diamond films with thickness of upper 50 m, which could be alternative candidate material of beam-extraction window. The detectors were irradiated at off- and on-line environment using alpha-particle sources and microbeam lines of two tandem accelerators placed at TARRI, JAEA and RBI. From point of view in the response of energy spectrum and detection efficiency, it was experimentally examined that the thin-film of single-crystalline diamond was well respond to the irradiation of single ions with energy of several MeV.
Kada, Wataru; Sato, Takahiro; Iwamoto, Naoya; Onoda, Shinobu; Grilj, V.*; Skukan, N.*; Makino, Takahiro; Koka, Masashi; Jaki, M.*; Oshima, Takeshi; et al.
Proceedings of 10th International Workshop on Radiation Effects on Semiconductor Devices for Space Applications (RASEDA-10) (Internet), p.70 - 73, 2012/12
Thin film CVD diamond detector is now under investigation for the utilization as a transmission detector for ionized particle in single-ion-hit by replacing materials of the beam extraction window in a microbeam line of the AVF cyclotron at JAEA/Takasaki. In this research, a spectroscopy-grade 50 m thick-film Single Crystalline (SC) CVD diamond detector with size of 4.6 mm 
4.6 mm was characterized using Ion Beam Induced Charge (IBIC) and Transient Ion Beam Induced Current (TIBIC) systems. The detector was irradiated with 1-3 MeV H
and 15 MeV O microbeams. Significant decrease of pulse height of IBIC signals was observed at 15 MeV O irradiation, however, this peak degradation easily recovered in a short time by release of bias voltages. This temporal degradation effect was enhanced in areas damaged by previous ion irradiation. Therefore, the temporal peak degradation seems to be caused by the polarization effect due to charge captured by defects in diamond or/and at the surface.
Son, N. T.*; Trinh, X. T.*; L
vile, L. S.*; Svensson, B. G.*; Kawahara, Kotaro*; Suda, Jun*; Kimoto, Tsunenobu*; Umeda, Takahide*; Isoya, Junichi*; Makino, Takahiro; et al.
Physical Review Letters, 109(18), p.187603_1 - 187603_5, 2012/11
Times Cited Count：201 Percentile：97.98(Physics, Multidisciplinary)Yamasaki, Chisato*; Murakami, Katsuhiko*; Fujii, Yasuyuki*; Sato, Yoshiharu*; Harada, Erimi*; Takeda, Junichi*; Taniya, Takayuki*; Sakate, Ryuichi*; Kikugawa, Shingo*; Shimada, Makoto*; et al.
Nucleic Acids Research, 36(Database), p.D793 - D799, 2008/01
Times Cited Count：52 Percentile：71.15(Biochemistry & Molecular Biology)Here we report the new features and improvements in our latest release of the H-Invitational Database, a comprehensive annotation resource for human genes and transcripts. H-InvDB, originally developed as an integrated database of the human transcriptome based on extensive annotation of large sets of fulllength cDNA (FLcDNA) clones, now provides annotation for 120 558 human mRNAs extracted from the International Nucleotide Sequence Databases (INSD), in addition to 54 978 human FLcDNAs, in the latest release H-InvDB. We mapped those human transcripts onto the human genome sequences (NCBI build 36.1) and determined 34 699 human gene clusters, which could define 34 057 protein-coding and 642 non-protein-coding loci; 858 transcribed loci overlapped with predicted pseudogenes.
; *; Akino, N.; Yamamoto, Masahiro; ; Okubo, Minoru; ; ; *;
Nihon Genshiryoku Gakkai-Shi, 29(12), p.1108 - 1115, 1987/12
Times Cited Count：0 Percentile：0.02(Nuclear Science & Technology)no abstracts in English
Arai, T.; Yamamoto, Masahiro; Akino, N.; ; Nakamura, H.; *; ; ; Okubo, Minoru; ; et al.
Journal of Nuclear Materials, 145-147, p.686 - 690, 1987/00
Times Cited Count：6 Percentile：55.64(Materials Science, Multidisciplinary)no abstracts in English
Ando, T.; Nakamura, H.; Yoshida, H.; Sunaoshi, H.; Arai, T.; Akino, N.; Hiroki, S.; Yamamoto, Masahiro; Okubo, Minoru; Shimizu, M.*; et al.
Proc. 14th Symp. on Fusion Technology, 1986, Vol.1, p.615 - 620, 1987/00
no abstracts in English
; Okubo, Minoru; Yamamoto, Masahiro; ; ; Nakamura, H.; Akino, N.; ; *; *; et al.
Nucl.Eng.Des./Fusion, 3(4), p.249 - 264, 1986/00
no abstracts in English
Kada, Wataru; Grilj, V.*; Skukan, N.*; Sato, Takahiro; Makino, Takahiro; Onoda, Shinobu; Koka, Masashi; Oshima, Takeshi; Jaki, M.*; Kamiya, Tomihiro
no journal, ,
Transmission particle detectors using thin-film diamond which could have role of beam-extraction window of the heavy ion microbeam line of AVF Cyclotron placed at TARRI, JAEA. The in-situ observation technique using this kind of detectors was newly developed for the individual detection of single-hit of these heavy ions with energy of several MeV used for the research of single ion hit(event) in the living bio-cell or semiconductor devices. In this study, two types of the detectors using spectroscopic-detector-grade poly- and single-crystalline diamond films with thickness of upper 50 m were examined, respectively. In the experiments, the detectors were irradiated by MeV energy alpha-particles from radioisotope sources and also by heavy ion microbeams at TARRI of JAEA and RBI. It was examined that the thin-film single-crystalline diamond detector respond to particle irradiation with energy of several MeV better, in respect of the energy resolution and the detection efficiency.
Son, N. T.*; Trinh, X. T.*; Suda, Jun*; Kimoto, Tsunenobu*; Lvile, L. S.*; Svensson, B. G.*; Szasz, K.*; Hornos, T.*; Gali, A.*; Umeda, Takahide*; et al.
no journal, ,
no abstracts in English
