Studies on Chemical Reaction Dynamics

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Two Israeli scientists were accepted and two Japanese scientists were dispatched in order to carry out collaborative research.Prof.A.Ben-Reuven of Tel Aviv University came in the end of August to stay for one and half month in the group of Prof.Nakamura at IMS,and worked on the possible applications of the newly developed theory of nonadiabatic transitions.Dr.M.Naphcha stayd in the group of Prof.Iwata of IMS and carried out a collaborative work on molecular electronic structure.Electronic structures of ground and excited states of CCH were calculated by the MCSCF-MRCI method and studied the dissociation processes.Prof.K.Yamashita worked together with Prof.R.Kosloff on the photo dissociated of I_3^- in solution.Experimentally observed spectrum of the dissociated product I_2^- was assigned to the SIGMA_u state arising from the spin-orbit interaction between ^3PI_u and ^1SIGMA_u states・by the CASSCF method.More elaborate calculations are now in progress to obtain quantitatively accurate results.Prof.Y.Tanimura had a useful discussions and started collaboration on the high resolution spectroscopy of a single pentacene molecule in a matrix of terphenyl.The fractal noise method and the spin boson method were found to be effective methods to analyze this problem.