Quasifission processes in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">Ca</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>40</mml:mn><mml:mo>,</mml:mo><mml:mn>48</mml:mn></mml:mrow></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">Sm</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>144</mml:mn><mml:mo>,</mml:mo><mml:mn>154</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>reactions
G. N. KnyazhevaFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaЭ. М. КозулинFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaR. N. SagaidakFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaA. ChizhovFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaМ. Г. ИткисFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaN. A. KondratievFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaV. M. VoskressenskyFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaA. M. StefaniniFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaB. BeheraFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaL. CorradiFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaE. FiorettoFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaA. GadeaFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaA. LatinaFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaS. SzilnerFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaM. TrottaFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaS. BeghiniFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaG. MontagnoliFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaF. ScarlassaraFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaF. HaasFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaN. RowleyFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaP. R. S. GomesFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, RussiaA. Szanto de ToledoFlerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow region, Russia
2007lv
ABI
Abstract
Mass-energy and angular distributions of fission fragments for the $^{48}\mathrm{Ca}+^{144,154}\mathrm{Sm}\ensuremath{\rightarrow}^{192,202}\mathrm{Pb}$, $^{40}\mathrm{Ca}+^{154}\mathrm{Sm}\ensuremath{\rightarrow}^{194}\mathrm{Pb}$ reactions have been measured. Fusion suppression and the presence of quasifission at energies near and below the Coulomb barrier have been observed for the reactions with the deformed target $^{154}\mathrm{Sm}$. In the case of the spherical $^{144}\mathrm{Sm}$ target no evidence of quasifission has been found. Quasifission cross sections have been extracted from total fission-like events by analysis of their mass and angular distributions.
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