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Kert\\'esz","submitted_at":"2010-12-03T08:44:13Z","abstract_excerpt":"The cross sections of the 169Tm({\\alpha}, {\\gamma})173Lu and 169Tm({\\alpha},n)172Lu reactions have been measured first time using a new method, by detecting the characteristic X-ray radiation following the electron capturedecay of 172,173Lu. Despite the relatively long half-life of the reaction products (T1/2 = 500 and 6.7 days, respectively) it was possible to measure the cross section of the 169Tm({\\alpha},{\\gamma})173Lu reaction close to the Gamow window (T9 = 3.5 GK), between Ec.m. = 13.16 and 17.08 MeV. 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