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Koura, Hiroyuki
Physics Education (Internet), 49(2), p.215 - 220, 2014/06
AA2013-1116.pdf:0.07MB
AA2013-1116.mp4:63.68MB
A movie abstract is presented for explaining the original paper published in Physics Education 49(2), 215-220 (2014), and is assigned as "AA20130602"of the external presentation number by Intellectual Resources Department. This paper is selected as "Video Abstract" set in the journal. The original paper was devoted to explanation of the three-dimensional (3D) nuclear chart created using toy blocks and to description of way of nucleosyntheis in stars with the help of the 3D nuclear chart. The publisher invited us to create a video abstract to accompany the article in order to further increase its visibility and impact. This is a four-minute movie, and is composed as a physics lecture. Firstly we give an overview of the 3D chart of the atomic mass version, and then we explain the relation between bulk properties of atomic masses and isotopic abundances of the solar system. This video gives impressive solidity, which can be not presented only in the original paper.
Koura, Hiroyuki
Physics Education, 49(2), p.215 - 220, 2014/03
Three-dimensional (3D) nuclear charts with toy blocks, which represent the atomic masses per nucleon number and the total half-lives for each nucleus in the entire region of the nuclear mass are constructed. The bulk properties of the nuclei can be easily understood by using these charts. These charts have been used in outreach activities for the general public and high school students. As an example, an application for a lecture of nucleosynthesis in star is introduced, some explanations that the reason for abundance of the iron, origin of uranium, etc, on planet Earth are given with the 3D chart.
Kitano, Akihiro; Nishi, Hiroshi; Suzuki, Takayuki; Okajima, Shigeaki; Kanemoto, Shigeru*
Proceedings of International Conference on Physics of Reactors; Advances in Reactor Physics; Linking Research, Industry, and Education (PHYSOR 2012) (CD-ROM), 14 Pages, 2012/04
The "Synthesis Method", a systematic and sophisticated method of sub-criticality measurement, is proposed in this work to ensure the safety margin before operation. The "Synthesis Method" is based on the modified source multiplication method (MSM) combined with the noise analysis method to measure the reference sub-criticality level for MSM. As a result of numerical simulation, it was suggested that a neutron detector located above the core center and three or more neutron detectors located above the radial blanket region enable the measurement of sub-criticality within 10% uncertainty from -0.5 to -2 and within 15% uncertainty for the deeper sub-criticality.
