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Report No.

Radiochemical study of the kinematics of multi-nucleon transfer reactions in $$^{48}$$Ca + $$^{248}$$Cm collisions 10% above the Coulomb barrier

G$"o$tz, M.*; G$"o$tz, S.*; Kratz, J. V.*; D$"u$llmann, Ch. E.*; Mokry, Ch.*; Runke, J.*; Th$"o$rle-Pospiech, P.*; Wiehl, N.*; Sch$"a$del, M.; Ballof, J.*; Dorrer, H.*; Grund, J.*; Huber, D.*; J$"a$ger, E.*; Keller, O.*; Krier, J.*; Khuyagbaatar, J.*; Lens, L.*; Lommel, B.*; Mendel, M.*; Moody, K. J.*; Scharrer, P.*; Schausten, B.*; Shaughnessy, D. A.*; Schmitt, M.*; Steiner, J.*; Trautmann, N.*; Yakushev, A.*; Yakusheva, V.*

The kinematics of multi-nucleon transfer reactions in the $$^{48}$$Ca + $$^{248}$$Cm collisions were investigated using a stacked-foil technique and radiochemical separations. In previous studies, isotopic distributions of the products of below-target isotopes were found to be broader than those of above-target isotopes, which had been interpreted as larger contributions of strongly dumped collisions in the productions of below-target isotopes than above-target ones. However, in the present study, the average total kinetic energy loss (TKEL), and thus, the average excitation energies were determined for both below-target and above-target isotopes, and they were found to be similar. This contradicts the previous interpretation, and thus, a new interpretation has been proposed; highly excited above-target products are lost by fission.



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Category:Physics, Nuclear



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