ELECTRICAL RESISTANCE DUE TO PHONON IN THE FERROMAGNETIC STATE OF A METAL

We studied how the electrical resistance due to phonons changes with temperature in the ferromagnetic state of a metal. A simple model calculation shows that the electrical conductance of the minority spin electrons can be larger than that of the majority spin electrons

Phonon effect on the temperature dependence of spin susceptibility and magnetization in metals

In many transition metals the paramagnetic spin susceptibility X increases with increasing temperature much beyond ordinary theories could account for. We demonstrate how the effect of the electron-phonon interactions enable us to understand such temperature dependence of X

Production cross sections of Mo, Nb and Zr radioisotopes from α-induced reaction on natZr

Cross sections of α-induced reactions on natural zirconium were measured up to 50 MeV using the stacked-foil technique, activation method and high resolution γ-ray spectrometry. The production cross sections of 93m,99Mo, 90g,92m,95g,95m,96Nb and 88,89g,95Zr were determined and compared with other experimental data measured earlier and result of theoretical calculations. The integral thick target yield of 99Mo was deduced from the measured cross section data

Excitation function measurement for zirconium-89 and niobium-90 production using alpha-induced reactions on yttrium-89

An experiment of α-induced reactions on yttrium-89 was performed to investigate the excitation functions of 89Zr and 90Nb, which are suitable for immuno-PET studies. The stacked-foil method, activation technique, and off-line γ-ray spectrometry were used for this investigation. The excitation functions of 92m,91m,89m,89gNb,88Zr, and 90m,88g,87m,87gY were also derived and compared with earlier experimental and the TENDL-2017 data. Good agreements with part of the previous studies were found