JAEA-Review-2010-065.pdf:15.99MB - 日本原子力研究開発機構

JAEA-Review 2010-065
PREFACE
This report covers research and development activities in Takasaki Advanced Radiation
Research Institute, JAEA, during the period from April 2009 to March 2010 conducted with
TIARA (Takasaki Ion Accelerators for Advanced Radiation Application), electron beam and
Co-60 gamma-ray irradiation facilities.
This annual report contains 165 papers in the fields of
1) Space, Nuclear and Energy Engineering,
2) Environmental Conservation and Resource Security,
3) Biotechnology and Medical Application,
4) Advanced Materials, Analysis and Novel Technology,
5) Status of Irradiation Facilities.
In the field of Space, Nuclear and Energy Engineering, radiation induced degradation of
semiconductors such as solar cells, SiC devices and so on have been examined in the
irradiation field which is simulated as cosmic space by using high energy electrons, protons
and heavy ions to accelerate the practical application of semiconductors to the next generation
electronic systems in space. Additionally, radiation stabilities of organic extractants, resins,
glove rubber, barrier material for geological disposal and steels for the next generation
reactors have been evaluated for the purpose of practical use in nuclear processing. The
radiation-resistant polymer, lighting and cable have been developed respectively for ITER,
gamma irradiation cell and J-PARC. Electrolyte membranes for fuel cells have been
developed by using track etching pores and radiation grafting. Grafting leads a new
anion-exchange membrane, poly(ether ether ketone)-based membrane, fabrication of
nanostructure in membrane.
In the filed of Environmental Conservation and Resource Security, fibrous materials have
been developed with radiation grafting technique and applied to catalyst for biodiesel
production, decolonization of waste water from livestock urine, and recovery of precious
metals. Furthermore, grafting was used for surface modification of vulcanized rubber, also.
Monolithic column can be applied to the separation of catecholamines. Hydro-gels
produced by crosslinking of hydroxypropyl cellulose have been investigated to improve the
mechanical strength. In the case of carboxymethyl chitosan, basic ESR study has been
carried out. R&Ds of the decomposition of persistent pharmaceuticals in waste water using
gamma-rays have been performed to develop new process technologies for environmental
conservation.
In the field of Biotechnology and Medical Application, studies on DNA damage and
mutational effects of ion beams were progressed at molecular level. The ion beam breeding
has been applied for many kinds of plants and microorganisms such as flowers, crops, yeast
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