Ca 48 + Bk 249 fusion reaction leading to element Z=117: Long-lived a -decaying Db 270 and discovery of Lr 266

Khuyagbaatar, J.; Yakushev, A.; Dullmann, Ch.E.; Ackermann, D.; Andersson, L.-L; Asai, M.; Block, M.; Boll, R.A.; Brand, H.; Fahlander, C.; Dasgupta, Mahananda; Evers, Maurits; Fahlander, Claes; Herzberg, R; Kratz, J-V; Kurz, N.; Trautmann, N; Uusitalo, J; Hinde, David

Ca 48 + Bk 249 fusion reaction leading to element Z=117: Long-lived a -decaying Db 270 and discovery of Lr 266

Date

2014

Authors

Khuyagbaatar, J.

Yakushev, A.

Dullmann, Ch.E.

Ackermann, D.

Andersson, L.-L

Asai, M.

Block, M.

Boll, R.A.

Brand, H.

Fahlander, C.

Publisher

American Physical Society

Abstract

The superheavy element with atomic number Z=117 was produced as an evaporation residue in the Ca48+Bk249 fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. The radioactive decay of evaporation residues and their α-decay p