Light Particle Accompanied Quasifission in Superheavy Composite Systems

Rubchenya, V. A.; Alexandrov, A. A.; Khlebnikov, S. V.; Lyapin, V. G.; Maslov, V. A.; Penionzhkevich, Y. u. E.; Prete, G.; Sobolev, Y. u. G.; Tyurin, G. P.; Trzaska, W. H.; Vakhtin, D. N.; Vardaci, Emanuele

doi:10.1134/S1063778806080175

The dynamics of the excited superheavy system with Z = 118 in the reaction Kr-86 + Pb-208 at E-Kr = 460, 500, and 600 MeV has been investigated. The mass and kinetic energy of binary fragments were measured by the time-of-flight method. Double-differential distributions of protons and a particles were measured in coincidence with fragments. The proton spectra can be described considering only evaporation from fragments. Evidence of the neck fragmentation was obtained from analysis of double-differential a spectra. Properties of the alpha-particle neck fragmentation component are close to those known from the tertiary fission of actinide nuclei, but the multiplicity is much larger than can be expected from extrapolation of the ternary fission data.

Light Particle Accompanied Quasifission in Superheavy Composite Systems / V. A., Rubchenya; A. A., Alexandrov; S. V., Khlebnikov; V. G., Lyapin; V. A., Maslov; Penionzhkevich, Y. u. E.; G., Prete; Sobolev, Y. u. G.; G. P., Tyurin; W. H., Trzaska; D. N., Vakhtin; Vardaci, Emanuele. - In: PHYSICS OF ATOMIC NUCLEI. - ISSN 1063-7788. - STAMPA. - 69:8(2006), pp. 1388-1398. [10.1134/S1063778806080175]