Multi-nucleon transfer reactions as a tool for spectroscopy of heavy nuclei
J F C Cocks; P A Butler; K J Cann; P T Greenlees; G D Jones; J F Smith; P M Jones; R Julin; S Juutinen; D Müller; M Piiparinen; A Savelius; R Broda; B Fornal; I Ahmad; D J Blumenthal; M P Carpenter; B Crowell; R V F Janssens; T L Khoo; T Lauritsen; D Nisius; S Asztalos; R M Clark; M A Deleplanque; R M Diamond; P Fallon; I Y Lee; A O Macchiavelli; R W MacLeod; F S Stephens; P Bhattacharyya; C T Zhang
Журнал:
Journal of Physics G: Nuclear and Particle Physics
Дата:
2000-01-01
Аннотация:
Multi-nucleon transfer reactions have been shown to be an important tool for high-spin spectroscopic studies of Rn, Ra and Th nuclei with N 134. These nuclei have been populated using the heavy-ion collisions of <sup>56</sup> Fe+ <sup>232</sup> Th, <sup>86</sup> Kr+ <sup>232</sup> Th and <sup>136</sup> Xe+ <sup>232</sup> Th at beam energies 15-20% above the Coulomb barrier. Excited states with spins as high as 28 have been observed using the latter reaction. Yield distributions of binary-reaction products stopped in thick targets have been derived from the analysis of - and - - coincidence events. These yields indicate that there is significant fission of the target-like reaction products. Intensities deduced for products resulting from neutron transfer or proton transfer appear to be Q -value dependent, while processes involving transfers of several protons and neutrons are governed by mass and charge equilibration.
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