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Study of 19F Levels with Ex = 6.7 - 7.7 MeV by the 15N+α Scattering Experiment
D. Kim,G. W. Kim,S. Y. Park,A. Kim,한인식,K. Abe,O. Beliuskina,S. Hayakawa,N. Imai,N. Kitamura,Y. Sakaguchi,H. Yamaguchi,S. M. Cha,K. Y. Chae,M. S. Kwag,S. W. Hong,E. J. Lee,J. H. Lee,E. K. Lee,J. Y. Moo 한국물리학회 2018 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.73 No.3
The intense γ-rays from classical novae are emitted due to the β-decay of 18F which is produced by the Hot-CNO cycle. The reaction rate of 18F(p,α)15O affects the prediction of the abundance of 18F. The main contribution to this reaction rate is from the resonances in 19Ne near and above the proton threshold. Hence, many experiments and theoretical works have been performed on the low-lying 18F+p resonances. One of the methods for investigating 19Ne parameters is studying the mirror nucleus 19F. α elastic scattering experiment was performed with a 7 MeV/u 15N beam for investigating the resonance parameters in 19F using the thick target method in inverse kinematics at the radioactive beam facility CRIB of the Center for Nuclear Study, the University of Tokyo. The excitation function of 19F was obtained for the excitation energy Ex = 6.7 - 7.7 MeV, and the parameters of the resonance states in 19F were determined using an R-matrix analysis.
Study on α-cluster levels in non-4n nuclei using low-energy RI beams
Yamaguchi, H,Kahl, D,Hayakawa, S,Sakaguchi, Y,Abe, K,Nakao, T,Suhara, T,Iwasa, N,Kim, A,Kim, D H,Cha, S M,Kwag, M S,Lee, J H,Lee, E J,Chae, K Y,Wakabayashi, Y,Imai, N,Kitamura, N,Lee, P,Moon, J Y,Lee, IOP Publishing 2017 Journal of physics. Conference series Vol.863 No.-
Experimental investigation of a linear-chain structure in the nucleus <sup>14</sup>C
Yamaguchi, H.,Kahl, D.,Hayakawa, S.,Sakaguchi, Y.,Abe, K.,Nakao, T.,Suhara, T.,Iwasa, N.,Kim, A.,Kim, D.H.,Cha, S.M.,Kwag, M.S.,Lee, J.H.,Lee, E.J.,Chae, K.Y.,Wakabayashi, Y.,Imai, N.,Kitamura, N.,Lee North-Holland Pub. Co 2017 Physics letters. Section B Vol.766 No.-
It is a well-known fact that a cluster of nucleons can be formed in the interior of an atomic nucleus, and such clusters may occupy molecular-like orbitals, showing characteristics similar to normal molecules consisting of atoms. Chemical molecules having a linear alignment are commonly seen in nature, such as carbon dioxide. A similar linear alignment of the nuclear clusters, referred to as linear-chain cluster state (LCCS), has been studied since the 1950s, however, up to now there is no clear experimental evidence demonstrating the existence of such a state. Recently, it was proposed that an excess of neutrons may offer just such a stabilizing mechanism, revitalizing interest in the nuclear LCCS, specifically with predictions for their emergence in neutron-rich carbon isotopes. Here we present the experimental observation of α-cluster states in the radioactive <SUP>14</SUP>C nucleus. Using the Be10+α resonant scattering method with a radioactive beam, we observed a series of levels which completely agree with theoretically predicted levels having an explicit linear-chain cluster configuration. We regard this as the first strong indication of the linear-chain clustered nucleus.
T.P. Rao,N. Sakaguchi,L.R. Juneja,E. Wada,T. Yokozawa 한국식품영양과학회 2005 Journal of medicinal food Vol.8 No.3
The antioxidant properties of amla extracts and their effects on the oxidative stress in streptozotocin-induceddiabetes were examined in rats. Amla in the form of either the commercial enzymatic extract SunAmla (Taiyo Kagaku Co.Ltd., Yokkaichi, Japan) (20 or 40 mg/kg of body weight/day) or a polyphenol-rich fraction of ethyl acetate extract (10 or 20mg/kg of body weight/day) was given orally for 20 days to the streptozotocin-induced diabetic rats. Amla extracts showedstrong free radical scavenging activity. Amla also showed strong inhibition of the production of advanced glycosylated endproducts. The oral administration of amla extracts to the diabetic rats slightly improved body weight gain and also signifi-cantly alleviated various oxidative stress indices of the serum of the diabetic rats. The elevated serum levels of 5-hydrox-ymethylfurfural, which is a glycosylated protein that is an indicator of oxidative stress, were significantly reduced dose-de-pendently in the diabetic rats fed amla. Similarly, the serum level of creatinine, yet another oxidative stress parameter, wasalso reduced. Furthermore, thiobarbituric acid-reactive substances levels were significantly reduced with amla, indicating areduction in lipid peroxidation. In addition, the decreased albumin levels in the diabetic rats were significantly improved withamla. Amla also significantly improved the serum adiponectin levels. These results form the scientific basis supporting theefficacy of amla for relieving the oxidative stress and improving glucose metabolism in diabetes.