Excitation functions and asymmetric fission barriers for intermediate mass fragments: 486–730 MeV<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Kr</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>86</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>63</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Cu
J. BogerDepartment of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794J. AlexanderDepartment of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794
1994lv
ABI
Annotatsiya
Fragments with 4\ensuremath{\le}Z\ensuremath{\le}15 have been studied from the reaction 486, 550, 640, and 730 MeV $^{86}\mathrm{Kr}$${+}^{63}$Cu. A standard analysis procedure has been used to characterize the associated asymmetric fission barriers and compare them to the Sierk model (Yukawa plus exponential finite range nuclear potential). The predicted YEFRN model barriers are too small by \ensuremath{\approxeq}37%, a result that is in contrast with other studies. The often used statistical model code gemeni also fails to account for these excitation functions.
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