Investigation of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mmultiscripts> <mml:mi>Pu</mml:mi> <mml:mprescripts/> <mml:none/> <mml:mn>244</mml:mn> </mml:mmultiscripts> <mml:mo>(</mml:mo> <mml:mmultiscripts> <mml:mi>

The 244Pu(48Ca,xn)292-xFl reaction was investigated at Lawrence Berkeley National Laboratory's 88 Inch Cyclotron using the Berkeley Gas-filled Separator (BGS), the newly installed SuperHeavy RECoil (SHREC) detector, along with an upgraded digital electronics and data acquisition system. Seven decay chains were observed starting with an evaporation residue (EVR) followed by a single α decay and a spontaneous fission (SF). The decay characteristics of these seven decay chains led to an assignment to 288Fl, the product of the 4n reaction channel. Two additional chains were (tentatively) assigned to the decay of the 3n exit channel, 289Fl. Cross sections for the 4n and 3n exit channels were σprod=6.7(3625) pb and σprod=1.6(2211) pb, respectively. Another decay chain, tentatively assigned to the 5n exit channel through the 48Ca+244Pu reaction or the 3n exit channel of the 48Ca+242Pu reaction, was also detected. Detailed information regarding the observed decay chains and their nuclear structure aspects are discussed, along with the performance of the BGS and the new detection system.