JAEA-Conf 2011-002 - 日本原子力研究開発機構
JAEA-Conf 2011-002 - 日本原子力研究開発機構
JAEA-Conf 2011-002 - 日本原子力研究開発機構
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>JAEA</strong>-<strong>Conf</strong> <strong>2011</strong>-<strong>002</strong><br />
5. Measurements of Neutron-Capture Cross Sections at<br />
J-PARC/MLF/ANNRI (1)<br />
Measurements of Neutron-Capture Cross Sections of<br />
Minor Actinides using a high intensity pulsed neutron source<br />
A. KIMURA*, T. FUJII1 , S. FUKUTANI1 , K. FURUTAKA, S. GOKO * , H. HARADA, J. HORI1 ,<br />
M. IGASHIRA2 , T. KAMIYAMA3 , T. KATABUCHI2 , T. KIN, K. KINO3** , F. KITATANI,<br />
Y. KIYANAGI 3 , M. KOIZUMI, M. MIZUMOTO2 , S. NAKAMURA, M. OHTA *** , M. OSHIMA,<br />
K. TAKAMIYA1 , and Y. TOH<br />
Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency<br />
2-4 Shirakata Shirane, Tokai, Naka, Ibaraki 319-1195, Japan<br />
1Research Reactor Institute, Kyoto University<br />
2 Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology<br />
3Graduate School of Engineering, Hokkaido University<br />
* Present address: Graduate School of Engineering, Hokkaido University<br />
** Present address: High Energy Accelerator Research Organization<br />
*** Present address: Center of Atomic and Molecular Technology, Osaka University<br />
Email: Kimura.atsushi04@jaea.go.jp<br />
In order to improve data accuracy of neutron-capture cross sections of minor actinides<br />
(MAs) and long-lived fission products (LLFPs), a new experimental instrument named “Accurate<br />
Neutron-Nucleus Reaction measurement Instrument (ANNRI)” has been constructed in the<br />
Materials and Life science experimental Facility at the Japan Proton Accelerator Research<br />
Complex, and measurements of neutron-capture cross sections of MAs and LLFPs with high<br />
intensity pulsed neutrons have been started. Together with a brief view of ANNRI, preliminary<br />
neutron-capture cross sections of 244Cm and 246Cm are reported as examples of the measurements<br />
of the MAs.<br />
1. Introduction<br />
Accurate data of neutron-capture cross sections of minor actinides (MAs) and long-lived<br />
fission products (LLFPs) are being required to estimate the production and the transmutation<br />
rates in the field of nuclear systems such as transmutation of radioactive waste and various<br />
innovative reactor systems[1-2]. However, accurate measurements of these cross sections are very<br />
difficult due to high radioactivity of these samples.<br />
To satisfy these demands, Accurate Neutron-Nucleus Reaction measurement Instrument<br />
(ANNRI) has been developed by the collaboration of Hokkaido University, Tokyo Institute of<br />
Technology and <strong>JAEA</strong>. ANNRI is located on the Beam Line No. 04 of the Materials and Life<br />
science experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC).