New Result in the Production and Decay of an Isotope, (^278)113, of the 113th Element by Kosuke Morita

Tuesday 15 Jan 2013, 13:30 → 15:00 Asia/Tokyo

RIBF Coference Hall (RIBF Coference Hall, RIKEN)

Lecturer: Dr. K. Morita (RNC) Date : January 15th (Tue) 13:30- Title : New Result in the Production and Decay of an Isotope, (^278)113, of the 113th Element An isotope of the 113th was produced in a complete fusion reaction with a (^70)Zn beam on a (^209)Bi target. We observed six consecutive α-decays following the implantation of a heavy particle in the detector under an extremely low background condition. The fifth and sixth decays are fully consistent with the sequential decays of (^262)Db and (^258)Lr in both decay energies and decay times. This indicates that the present decay chain consisted of (^278)113, (^274)Rg (Z = 111), (^270)Mt (Z = 109), (^266)Bh (Z = 107), (^262)Db (Z = 105), and (^258)Lr (Z = 103) with firm connections. This result conclusively leads to the unambiguous production and identification of the isotope (^278)113 of the 113th element. ※ 標題とアブストともに、(^***)は、括弧内の数字が上付き文字です。 * The talk will be given in English