Production of cold target-like fragments in the reaction of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Ca</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>48</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mo>+</mml:mo></mml:mrow><mml:mrow><mml:mn>248</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Cm
H. W. GäggelerW. BrüchleM. BrüggerM. SchädelK. SümmererG. WirthJ. V. KratzMartin LerchTh. BlaichG. HerrmannN. HildebrandΝ. TrautmannD. LeeK. J. MoodyΚ. Ε. GregorichRobert B. WelchGlenn T. SeaborgDarleane C. HoffmanW.R. DanielsM. M. FowlerH. R. von Gunten
1986lv
ABI
Annotatsiya
Yields for isotopes of Rn through Pu have been measured in the reaction $^{48}\mathrm{Ca}$${+}^{248}$Cm at an energy of 248--263 MeV (1.04--1.10 times the Coulomb barrier). Despite the low bombarding energy, high and essentially constant integral yields of about 1 to 2 mb for the elements Rn through U were observed. There is evidence that these nuclides are produced with little excitation energy.
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