Intermediate mass fragments from the reactions 486, 550, 640, and 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 11794A. ElmaaniDepartment of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794S. KoxDepartment of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794R. LaceyDepartment of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794A. NarayananDepartment of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794David J. MosesDepartment of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794M. A. McMahanDepartment of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794P. DeYoungDepartment of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794C. J. GelderloosDepartment of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794
1994lv
ABI
Annotatsiya
Intermediate mass fragments have been studied from the reaction $^{86}\mathrm{Kr}$${+}^{63}$Cu for $^{86}\mathrm{Kr}$ beam energies of 486, 550, 640, and 730 MeV. Average center-of-mass (c.m.) energies are nearly constant with the c.m. angle and vary little with incident energy. Furthermore, the angular distributions are well approximated by 1/sin${\mathrm{\ensuremath{\theta}}}_{\mathrm{c}.\mathrm{m}.}$. From this and other evidence we conclude that equilibration has occurred prior to fissionlike asymmetric binary breakup of the composite nucleus in the predominant mechanism for IMF production.
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