Study of stereodynamics for intramolecular magnetism by means of spin-polarized metastable atomic beams

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In Penning ionization of high-spin open-shell compounds (M) by collision with an open-shell triplet He* metastable atomic beam, we have investigated complex electronic structure and strong He*-M interaction by the collision-energy-resolved/electron-energy- resolved 2D spectroscopy. We have found that the change of electronic states of deposited organic molecules (five-memberd hetero cyclic molecules) was started by open-shell alkali metal atoms with the gradual heating of the metal surface, which was observed by the collision energy dependence of partial ionization cross sections with the electron-energy/collision-energy-resolved 2D electron spectroscopy.