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Search for the production of element 112 in the48Ca+238Ureaction

“…[5]. We searched for EVR-α, α-α, and EVR-fission events occuring within 1000 s, using the same energy restrictions as in the first search.…”

“…Nine of the arc-shaped targets were mounted on a 35-cm wheel that was rotated at 300 rpm. The beam energy in the target was 228 -234 MeV [15], encompassing the projectile energy range used in [5]. The beam intensity was monitored by two silicon p-i-n detectors (mounted at ±27 degrees with respect to the incident beam) that detected elastically scattered beam particles from the target.…”

“…In 1999, a Dubna-GSI-RIKEN collaboration [5] 48 Ca with 242 Pu, two events were found in which an evaporation residue (EVR) emitted an alpha-particle, producing a daughter nucleus that decayed by SF. [6] These latter SF decays were attributed to the decay of 283 112 and if taken with the previous work, imply a half-life of∼3 m for 283 112.…”

Prospects for the discovery of the next new element: Influence of projectiles withZ> 20

“…The last fifteen years have seen a tremendous growth in the periodic table, as six elements with Z = 113-118 have been discovered by a collaboration of researchers from the Joint Institute for Nuclear Research (JINR) in Dubna, Russia and Lawrence Livermore National Laboratory (LLNL) in Livermore, California, USA. (See [1] for a review and [2][3][4][5][6][7][8] and references therein for details). These studies have used neutron-rich 48 Ca projectiles reacting with targets of actinide nuclei.…”

“…(See [1] for a review and [2][3][4][5][6][7][8] and references therein for details). These studies have used neutron-rich 48 Ca projectiles reacting with targets of actinide nuclei.…”