1. Toward the Discovery of New Elements: Production of Livermorium (Z=116) with Ti50
- Author
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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, and Wooddy, PT
- Subjects
Nuclear and Plasma Physics ,Synchrotrons and Accelerators ,Physical Sciences ,Mathematical Sciences ,Engineering ,General Physics ,Mathematical sciences ,Physical sciences - Abstract
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.
- Published
- 2024