부산대학교 도서관

In fusion evaporation reactions of a92Mo beam with targets of neutron deficient Rb — Mo isotopes very neutron deficient isotopes of elements between Au and Po have been produced. The new isotopes173, 174Au,175, 176Hg, and179Tl were identified by alpha spectroscopy. The mass excess value of176Hg could be linked to known values of theN-Z=16 chain. The location of the new isotopes with respect to the proton drip line is discussed. A new high energya transition of (7.20±0.02) MeV andT1/2=(1.4±0.5) ms has been found in the reaction92Mo+89Y?181Tl* at an excitation energy of 37 MeV. It is tentatively assigned to isotopes produced in 2-particle evaporation channels.