Fast single-ion hit system for heavy-ion microbeam at TIARA cyclotron, 4

Yokota, Wataru; Sato, Takahiro; Okumura, Susumu; Kurashima, Satoshi; Miyawaki, Nobumasa; Kashiwagi, Hirotsugu; Yoshida, Kenichi; Koka, Masashi; Takano, Katsuyoshi*; Yokoyama, Akihito; et al.

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 159, 2012/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2011-043.pdf

The development of the fast single-ion hit system was continued from last year in order to improve the quality of microbeam and single-ion hit at the TIARA cyclotron of the Japan Atomic Energy Agency. The major subjects were reduction of miss hit, no hit on the targeted point by any ions in the single-ion-hit irradiation, and development of a real-time detection system of single-ion hit. A new microbeam of 400 MeV-Fe with a spot diameter of about 4 m was also developed and supplied to an experiment.

Dose optimization of Cd for direct imaging of Cd uptake from culture to root

Suzui, Nobuo; Kawachi, Naoki; Ishii, Satomi; Yamazaki, Haruaki; Fujimaki, Shu

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 95, 2012/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2011-043.pdf

Spectroellipsometric studies on EB induced refractive index change of aliphatic polyimide

Seito, Hajime; Hakoda, Teruyuki; Hanaya, Hiroaki; Haruyama, Yasuyuki; Kaneko, Hirohisa; Yamashita, Takashi*; Kojima, Takuji

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 150, 2012/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2011-043.pdf

no abstracts in English

Structural phase transition of Pt/Ge(001) surface studied by reflection high-energy positron diffraction

Mochizuki, Izumi; Fukaya, Yuki; Kawasuso, Atsuo

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 137, 2012/01

https://doi.org/10.11484/jaea-review-2011-043

Defect-free quasi-one chain with the single atomic width is reconstructed on the Ge(001) surface by a Pt adsorption of sub-atomic layer. Recently, it has been reported that the atomic chain undergoes the Peierls transition about 80 K. But, the electronic property, the atomic arrangements and displacements in the phase transition are not yet elucidated. Using reflection high-energy positron diffraction (RHEPD), we have reported that the rocking curve in a one-beam condition matches the dynamical calculation assuming the Nano-Wire (NW) model suggested by Vanpoucke et al. However, they have also proposed several NW models with different Pt coverages and have argued that the phase transition derives from the change of the Pt coverage. In this study, we have tried to determine the atomic arrangement, the Pt coverage and the displacements in the phase transition by using RHEPD with a many-beam condition. The rocking curve shows a good agreement with the calculated curve assuming the NW model with the Pt coverage of 0.75 ML, while the curve does not agree with the curves from the Pt coverage of 0.8125 or 0.875 ML. In addition, the change of rocking curves in the phase transition shows that the structural phase transition is caused by the height difference of the topmost Ge dimer atoms making the p(44) structure.

The Effect of partial delignification of kenaf bast fibers for radiation graft polymerization

Mohamed, N. H.*; Tamada, Masao; Ueki, Yuji; Seko, Noriaki

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 45, 2012/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2011-043.pdf

no abstracts in English

Surface modification of vulcanized rubber by radiation co-grafting

Mizote, Norihito*; Saito, Hiroaki*; Ueki, Yuji; Seko, Noriaki; Tamada, Masao

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 52, 2012/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2011-043.pdf

no abstracts in English

Elemental mapping and estimation of elemental abundances of lichen by TIARA micro beam PIXE

Iwata, Yoshihiro*; Ishii, Keizo*; Kamiya, Tomihiro; Sato, Takahiro

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 90, 2012/01

https://doi.org/10.11484/jaea-review-2011-043

Preparation and biological evaluation of 3-[Br]bromo--methyl-L-tyrosine, a novel tyrosine analog for PET imaging of tumors

Ohshima, Yasuhiro; Hanaoka, Hirofumi*; Watanabe, Shigeki; Sugo, Yumi; Watanabe, Satoshi; Tominaga, Hideyuki*; Oriuchi, Noboru*; Endo, Keigo*; Ishioka, Noriko

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 91, 2012/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2011-043.pdf

Operation of the electrostatic accelerators

Agematsu, Takashi; Uno, Sadanori; Chiba, Atsuya; Yamada, Keisuke; Yokoyama, Akihito; Saito, Yuichi; Ishii, Yasuyuki; Sato, Takahiro; Okubo, Takeru; Yokota, Wataru; et al.

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 173, 2012/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2011-043.pdf

Three electrostatic accelerators of TIARA were operated smoothly in FY 2010, and all the planned experiments were carried out except those canceled by users or the impact of Great East Japan Earthquake on March 11, 2011. On the other hand, Saturday operation for experiments was carried out after October on the Global Nuclear-Human Resource Development Initiative. The yearly operation time of the tandem accelerator, the single-ended accelerator and the ion implanter amounted to 2116, 2367 and 1800 hours, respectively, which were similar to those of usual years. Regarding the single-ended accelerator, the generator in the high-voltage terminal failed and was replaced with new one. A switching magnet was installed for a new branch beam line of the ion implanter. As to the tandem accelerator, In ion was generated and accelerated at intensity of 500 nA.

Production of radioactive bromine Br

Watanabe, Satoshi; Watanabe, Shigeki; Iida, Yasuhiko*; Hanaoka, Hirofumi*; Endo, Keigo*; Ishioka, Noriko

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 92, 2012/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2011-043.pdf

no abstracts in English