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Measurement of High Energy Neutron Induced Cross Sections for Chromium
S. Sekimoto,T. Utsunomiya,H. Yashima,H. Joto,S. Shibata,K. Ninomiya,D. Satoh,Y. Iwamoto,T. Omoto,R. Nakagaki,N. Takahashi,A. Shinohara,T. Shima,M. Hagiwara,H. Matsumura,K. Nishiizumi,Y. Matsushi,H. Ma 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Reaction cross sections for Cr induced by neutrons at 287 MeV were measured by using ^7Li(p,n) reaction at N0 beam line in the Research Center for Nuclear Physics (RCNP), Osaka University. To estimate quasi-monoenergetic neutron-induced cross sections, the Cr sample was irradiated on the two angles of 0° and 30° for the axis of the primary proton beam. Proton-induced reaction cross sections for Cr at 300 MeV were also measured. The measured cross section data in the ^(nat)Cr(n,x) and ^(nat)Cr(p,x) reactions are compared with the literature values and the JENDL high-energy file. Furthermore, those in the ^(nat)Cr(n,x) reactions are also compared with those in the ^(nat)Cr(p,x) reaction.
Y. Xiang,Wang, C.M.,T. Utsunomiya,C. Machimdamrong Computational Structural Engineering Institute of 2001 Computational structural engineering Vol.1 No.1
This paper presents exact solutions for the modal stress-resultant distributions for vibrating rectangular Mindlin plates involving two opposite sides simply supported while the other two sides free. These exact stress-resultants of vibrating plates with free edges, hitherto unavailable, are very important because they serve as benchmark solutions for checking numerical solutions and methods. Using the exact solutions of a square plate, this paper highlights the problem of determining accurate stress-resultants, especially the transverse shear forces and twisting moments in thin plates, when employing the widely used numerical methods such as the Ritz method and the finite element method. Thus, this study shows that there is a need for researchers to develop refinements to the Ritz method and the finite element method for determining very accurate stress-resultants in vibrating plates with free edges.