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C. J. Yoon,H. Akikawa,K. Aoki,Y. Fukao,H. Funahashi,M. Hayata,K. Imai,K. Miwa,H. Okada,N. Saito,H. D. Sato,K. Shoji,H. Takahashi,K. Taketani,J. Asai,M. Kurosawa,M. Ieiri,T. Hayakawa,T. Kishimoto,A. Sa 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
We determined scattering length and effective range of ΛΛ scattering for the ΛΛ relative energy (M_(ΛΛ)-2M_Λ) from ΛΛ threshold to 30 MeV/c_2. Phase shift of the ΛΛ wave function which described by scattering length and effective range was determined by fitting the ΛΛ mass spectrum. The obtained scattering length -0.10^(+0.37)_(-1.56) ± 0.04, and effective range 13.90 ^(+14.35)_(-9.13) ± 10.53 fm is the most consistent with the values predicted by using a series of the Nijmegen soft core models NSC97's. However the predicted values by using the Nijmegen hard core model ND (G-matrix), the extended soft core model ESC00, and the Kyoto-Niigata FSS are out of three standard deviations from the determined scattering parameters. Further, we determine ΛΛ potential by fitting the ΛΛ invariant mass spectrum using numerically solved ΛΛ wave function with two-Gaussian shaped potential well. The ΛΛ scattering parameters derived from the wave function are found to be scattering length -0.09, and effective range 29.34 fm with a maximum phase shift of 2.4 deg.
Search for theH-dibaryon resonance inC12(K−,K+ΛΛX)
Yoon, C. J.,Akikawa, H.,Aoki, K.,Fukao, Y.,Funahashi, H.,Hayata, M.,Imai, K.,Miwa, K.,Okada, H.,Saito, N.,Sato, H. D.,Shoji, K.,Takahashi, H.,Taketani, K.,Asai, J.,Kurosawa, M.,Ieiri, M.,Hayakawa, T. American Physical Society 2007 PHYSICAL REVIEW C - Vol.75 No.2
Kamada, K.,Nikl, M.,Kurosawa, S.,Shoji, Y.,Pejchal, J.,Ohashi, Y.,Yokota, Y.,Yoshikawa, A. Elsevier [etc.] 2016 Journal of luminescence Vol.169 No.2
Pr doped (Lu,Gd)<SUB>3</SUB>(Ga,Al)<SUB>5</SUB>O<SUB>12</SUB> single crystals were grown by the micro-pulling down (μ-PD) method. The crystals were greenish and transparent with 3.0mm in diameter, 10-30mm in length. Neither visible inclusions nor cracks were observed. Luminescence and scintillation properties were measured. The substitution at the Al<SUP>3+</SUP> sites by Ga<SUP>3+</SUP> in garnet structure has been studied. The Pr<SUP>3+</SUP> 5d-4f emission is observed within 300-380nm wavelength superposed with 312nm emission line of Gd<SUP>3+</SUP>. Pr0.2%:Lu<SUB>2.5</SUB>Gd<SUB>1</SUB>Ga<SUB>3</SUB>Al<SUB>2</SUB>O<SUB>12</SUB> shows highest emission intensity. The light yield of Pr0.2%:Lu<SUB>2.5</SUB>Gd<SUB>0.5</SUB>Ga<SUB>2</SUB>Al<SUB>3</SUB>O<SUB>12</SUB> sample with diameter 3mmx1mm size was around 8000ph/MeV. Two-exponential approximations of scintillation decay showed 39.6ns (30.6%) and 151ns (69.4%) decay times.
Chang, H.,Nozawa, K.,Liu, X.L.,Geng, S.M.,Ren, Z.J.,Qin, G.Q.,Li, X.G.,Sun, J.M.,Zheng, H.L.,Song, J.Z.,Kurosawa, Y.,Sano, A.,Jia, Q.,Chen, G.H. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.2
This paper is based on the 9 goat colonies along the middle and lower Yellow River valley and 7 local goat colonies in the Northeast, Tibet and the Yangtze valley. After collecting the same data about the 22 goat colonies in China and other countries, it establishes and composes the matrix of fuzzy similarity relation describing the genetic similarities of different colonies. It also clusters 38 colonies according to their phylogenetic relationship. The establishment of the matrix and the cluster are effected in terms of the frequency of 18 loci and 43 allelomorphs in blood enzyme and other protein variations. The study proves that the middle Yellow River valley is one of the taming and disseminating centers of domestic goats in the South and East of Central Asia. Compared with other goat populations in this vast area, the native goat populations in the west of Mongolian Plateau, the Qinghai-Tibet Plateau and the middle Yellow River valley share the same origin. The colonies in the lower Yellow River valley and those in the middle valley, however, are relatively remote in their phylogenetic relationship. The native goat colonies in the southeast of Central Asia can be classified into two genetic groups: "East Asia" and "South Asia" and the colonies in Southeast Asia belong to either group.
The estimation of absorbed dose rates for non-human biota: an extended intercomparison
Vives i Batlle, J.,Beaugelin-Seiller, K.,Beresford, N. A.,Copplestone, D.,Horyna, J.,Hosseini, A.,Johansen, M.,Kamboj, S.,Keum, D.-K.,Kurosawa, N.,Newsome, L.,Olyslaegers, G.,Vandenhove, H.,Ryufuku, S Springer-Verlag 2011 Radiation and environmental biophysics Vol.50 No.2
Chun, K J,Butler, D J,Webb, D,Mahant, A K,Meghzifene, A,Lee, J H,Hah, S H,Kadni, T B,Zhang, Y,Kurosawa, T,Msimang, Z L M,Caseria, E S Springer-Verlag 2013 METROLOGIA -BERLIN- Vol.50 No.-
<P>The APMP.RI(I)-K1 key comparison of the measurement standards of air kerma for <SUP>60</SUP>Co gamma-rays was undertaken by the APMP/TCRI Dosimetry Working Group between 2004 and 2006, coordinated by the Korean Research Institute of Standards and Science (KRISS). In total, 10 institutes took part in the comparison, among which 7 were APMP member laboratories. Three Farmer-type commercial cavity chambers were used as transfer chambers and circulated among the participants. All the participants carried out their measurements according to the guidelines for the comparison established by the KRISS with the cooperation of the ARPANSA. For each transfer chamber, an NMI calibration coefficient was obtained and a ratio derived by dividing by the average result from the linking laboratories, ARPANSA and NMIJ. The APMP comparison reference value for each chamber was calculated as the mean of the NMI-determined calibration coefficients divided by the average result from the linking laboratories. The results showed that the maximum difference between the APMP linked ratio of a participating NMI and the APMP reference value was 1.76%.</P><P>The measured ratios of the calibration coefficient R<SUB>NMI, BIPM</SUB> between the participating NMI and the BIPM via the link laboratories for the transfer chambers were obtained. The maximum expanded uncertainty of R<SUB>NMI, BIPM</SUB> for any participating laboratory was 2.0%.</P><P>The degree of equivalence of each participating laboratory with respect to the key comparison reference value was also evaluated. The expanded uncertainty of the difference between the results ranged from 0.5% to 1.2%. The pair-wise degree of equivalence between each pair of laboratories was also obtained and the largest difference of the expanded uncertainty of the difference for any pair-wise degree of equivalence was within the expanded uncertainty of the measurement for the pair of laboratories.</P><P>Main text.To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.</P><P>The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).</P>