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Toward the Discovery of New Elements: Production of Livermorium (Z=116) with Ti50
- Gates, JM;
- Orford, R;
- Rudolph, D;
- Appleton, C;
- Barrios, BM;
- Benitez, JY;
- Bordeau, M;
- Botha, W;
- Campbell, CM;
- Chadderton, J;
- Chemey, AT;
- Clark, RM;
- Crawford, HL;
- Despotopulos, JD;
- Dorvaux, O;
- Esker, NE;
- Fallon, P;
- Folden, CM;
- Gall, BJP;
- Garcia, FH;
- Golubev, P;
- Gooding, JA;
- Grebo, M;
- Gregorich, KE;
- Guerrero, M;
- Henderson, RA;
- Herzberg, R-D;
- Hrabar, Y;
- King, TT;
- Covo, M Kireeff;
- Kirkland, AS;
- Krücken, R;
- Leistenschneider, E;
- Lykiardopoulou, EM;
- McCarthy, M;
- Mildon, JA;
- Müller-Gatermann, C;
- Phair, L;
- Pore, JL;
- Rice, E;
- Rykaczewski, KP;
- Sammis, BN;
- Sarmiento, LG;
- Seweryniak, D;
- Sharp, DK;
- Sinjari, A;
- Steinegger, P;
- Stoyer, MA;
- Szornel, JM;
- Thomas, K;
- Todd, DS;
- Vo, P;
- Watson, V;
- Wooddy, PT
- et al.
Published Web Location
https://doi.org/10.1103/physrevlett.133.172502Abstract
The ^{244}Pu(^{50}Ti,xn)^{294-x}Lv reaction was investigated at Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. The experiment was aimed at the production of a superheavy element with Z≥114 by irradiating an actinide target with a beam heavier than ^{48}Ca. Produced Lv ions were separated from the unwanted beam and nuclear reaction products using the Berkeley Gas-filled Separator and implanted into a newly commissioned focal-plane detector system. Two decay chains were observed and assigned to the decay of ^{290}Lv. The production cross section was measured to be σ_{prod}=0.44(_{-0.28}^{+0.58}) pb at a center-of-target center-of-mass energy of 220(3) MeV. This represents the first published measurement of the production of a superheavy element near the "island of stability," with a beam of ^{50}Ti and is an essential precursor in the pursuit of searching for new elements beyond Z=118.
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