摘要
It is of special interest to search for those unknown α-emitters in the transuranium region which (i) are located along the path of α-decay chains that start in the superheavy element region, and (ii) establish a link to nuclides with known masses. The knowledge of all Qαvalues in an α-decay chain allows obtaining
It is of special interest to search for those unknown a-emitters in the transuranium region which （i） are located along the path of a-decay chains that start in the superheavy element region, and （ii） establish a link to nuclides with known masses. The knowledge of all Qα values in an a-decay chain allows obtaining strongly desired mass values of SHE. A search for the a-decay of 239Cm was carried out at JAEFLI applying nuclear chemistry techniques[1] Three a-events with an energy of （6.43±0.14） MeV were assigned to 2agCm and the α/EC branching ratio was estimated as （6.2±1.4）× 10-5.
