Limited validity of West and Yennie integral formula for elastic scattering of hadrons

The commonly used West and Yennie integral formula for the relative phase between the Coulomb and elastic hadronic amplitudes might be consistently applied to only if the hadronic amplitude had the constant ratio of the real to the imaginary parts al all kinematically allowed values of four momentum transfer squared.Comment: 5 page

[Review of] Henry (Yoshitaka) Kiyama. The Four Immigrants Manga: A Japanese Experience in San Francisco, 1904-1924, translated by Frederik L. Schadt

This historically important document is a translation of a humorous comic book published in 1931 based on the experiences of the author, Henry (Yoshitaka) Kiyama, as he immigrated to the United States. Kiyama crossed the ocean from Japan to study art in San Francisco in 1904, at the age of nineteen. Upon his arrival he worked as a house servant during the day and went to school at night. It is not well known here, but until the Second World War a large number of Japanese immigrants came to mainland America with student visas rather than work permits; many of these students became school-boys (that is, household help) and did not really go to school (though Kiyama did actually attend art college)

muSR study of the Cu-spin dynamics in the electron-doped high-Tc cuprate of Pr0.86LaCe0.14Cu1-y(Zn,Ni)yO4

Effects of the Zn- and Ni-substitution on the Cu-spin dynamics in the electron-doped Pr0.86LaCe0.14Cu1-y(Zn,Ni)yO4+a-d with y = 0, 0.01, 0.02, 0.05 and different values of the reduced oxygen content d have been studied using zero-field muon-spin-relaxation (muSR) measurements at temperatures down to 2 K. For the as-grown sample (d = 0, y = 0) and the sample with a very small d value (d < 0.01, y = 0), a muon-spin precession due to long-range antiferromagnetic order has been observed. On the other hand, no precession has been observed for moderately oxygen-reduced samples (0.01 < d < 0.09). It has been found that for all the samples of 0.01 < d < 0.09 the asymmetry A(t) (muSR time spectrum) in the long-time region increases with decreasing temperature at low temperatures, suggesting possible slowing-down of the Cu-spin fluctuations. On the other hand, no significant difference between Zn- and Ni-substitution effects on the slowing down of the Cu-spin fluctuations has been observed.Comment: 4 pages, 2 figures, Proceeding of 10th muSR conference 2005, to be published in Physica