Sub-barrier fusion of o+sn using a new detection system

Sub-Barrier Fusion Reactions

“…With great care the group at SUNY-Stony Brook (32) has been able to measure evaporation residue cross sections below 0.3 mb for the 34S + 26Mg reaction, over two orders of magnitude below the value at the barrier. Recently, a new technique, particularly suitable for very asymmetric pro jectile-target combinations, such as oxygen and tin, has been developed at the Weizmann Institute (33). Using a pulsed beam and a large multistep avalanche chamber downstream from the target, researchers could sepa rate the very low velocity recoils from the dominant elastic scattering by time of fl ight.…”

“…The 16,180 data on several targets of Sn(33), 148,15 0 ,152,154Sm(9), and 182,184,18 6W ( c. Bem i s, private communication) are from the Weizmann Institute; on 2 0 8Pb and 209Bi from Vulgaris et al(51); and 208Pb from the Seattle group (R. Van denbosch, private communication). There are extensive measurements on the Ni isotopes with beams of 2 8 ,3 0 Si and 32,36S by the Legnaro-Padua group (64) and with 58,64Ni by Beckerman and coworkers(10,65).…”

Sub-Barrier Fusion Reactions

“…The 16,180 data on several targets of Sn(33), 148,15 0 ,152,154Sm(9), and 182,184,18 6W ( c. Bem i s, private communication) are from the Weizmann Institute; on 2 0 8Pb and 209Bi from Vulgaris et al(51); and 208Pb from the Seattle group (R. Van denbosch, private communication). There are extensive measurements on the Ni isotopes with beams of 2 8 ,3 0 Si and 32,36S by the Legnaro-Padua group(64) and with 58,64Ni by Beckerman and coworkers (10, 65).…”