Status report of JAEA-AMS-TONO; Research and technical development in the last four years

Kokubu, Yoko; Fujita, Natsuko; Watanabe, Takahiro; Matsubara, Akihiro; Ishizaka, Chika; Miyake, Masayasu*; Nishio, Tomohiro*; Kato, Motohisa*; Ogawa, Yumi*; Ishii, Masahiro*; et al.

Nuclear Instruments and Methods in Physics Research B, 539, p.68 - 72, 2023/06

https://doi.org/10.1016/j.nimb.2023.03.005

The JAEA-AMS-TONO facility at the Tono Geoscience Center, JAEA has an accelerator mass spectrometer (JAEA-AMS-TONO-5MV). The spectrometer enabled us to use a multi-nuclide AMS of carbon-14 (C), beryllium-10, aluminium-26 and iodine-129, and we have recently been proceeding test measurement of chlorine-36. In response to an increase of samples, we installed a state-of-the-art multi-nuclide AMS with a 300 kV Tandetron accelerator in 2020. Recently, we are driving the development of techniques of isobar separation in AMS and of sample preparation. Ion channeling is applied to remove isobaric interference and we are building a prototype AMS based on this technique for downsizing of AMS. The small sample graphitization for C has been attempted using an automated graphitization equipment equipped with an elemental analyzer.

Present status of the JAEA-AMS-TONO (2022FY)

Fujita, Natsuko; Miyake, Masayasu; Matsubara, Akihiro*; Ishii, Masahiro*; Watanabe, Takahiro; Jinno, Satoshi; Nishio, Tomohiro*; Ogawa, Yumi; Yamamoto, Yusuke; Kimura, Kenji; et al.

Dai-23-Kai AMS Shimpojiumu Hokokushu, p.1 - 4, 2022/12

The JAEA-AMS-TONO facility at the Tono Geoscience Center, JAEA has three accelerator mass spectrometers. We report the present status of the JAEA-AMS-TONO.

Impact of aluminum ion for the translocation of signaling molecule in higher plant

Furuichi, Takuya*; Fujimaki, Shu; Kawachi, Naoki; Suzui, Nobuo; Ishii, Satomi; Ishioka, Noriko; Matsuhashi, Shimpei; Yamamoto, Yoko*; Sokabe, Masahiro*

JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 130, 2007/02

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2006-042.pdf

no abstracts in English

Investigation on analytical technique of solidified product of wastes

*; ; *; *; *; *

PNC TN8420 89-011, 137 Pages, 1989/03

PNC-TN8420-89-011.pdf:3.24MB

In Bituminization Demonstration Facility, low-level radioactive liquid waste has been solidfying with asphalt to institution, whereas in Solvent Waste Treatment Demonstration Facility, solvent waste has been solidfying with epoxy resin or PVC (henceforth designated as plastic solidfied product). The radiochemically analytical techniques were investigated and examined in order to carry out the evaluation of those products, and decide to the plan for development of the experiment on the application of these techniques were performed. A summary of contents of practice is indicated as follows: (1)Investigation of radiochemically analytical techniqueson solidified product of radioactive wastes. (a)Methods of preliminary treatment of samples. THe methods of ashing or liquedying in solvents are effective to Inorganically and solvolysis for the samples, however as operating conditions, it is important that the operation temperature control, and prevented the scattering of ofject nuclides. (b)Method of separating and isolating of ofject nuclides. The ofject nuclides were previously classified into the groupes being similar in chemical behavior, after it was indicated that the methods for isolating and measuring each group is effective. For these techniques, it is desirable to adopt the ion exchange and extracting methods. (2)Plan for development of experiment. It was indicated that simulated Cold and Hot tests were necessary to operate in order to investigate the functions of the recovery, distribution and handling with preliminaly treatment, methods of separating and isolating in the radio chemically analytical technique.

The 300kV multi-element AMS system at the TONO Geoscience Center, JAEA; First performance report

Fujita, Natsuko; Miyake, Masayasu; Matsubara, Akihiro*; Ishii, Masahiro*; Takahashi, Yuto*; Nishio, Tomohiro*; Ogawa, Yumi; Shimada, Akiomi; Shimada, Koji

no journal, , 

In the Tono Geoscience Center, Japan Atomic Energy Agency, There are two AMS systems (JAEA-AMS-TONO-5MV and JAEA-AMS-TONO-300kV). This presentation will compare the differences between the JAEA-AMS-TONO-5MV and JAEA-AMS-TONO-300kV. In particular, we will discuss extraction voltage of the ion source, relationship between terminal voltage and charge states, transmission, difference in cathode shape, and so on.