6533b824fe1ef96bd12812ae
RESEARCH PRODUCT
Estimates of the Nuclear Time Delay in Dissipative U + U and U + Cm Collisions Derived from the Shape of Positron andδ-Ray Spectra
P. SengerJ. B. WilhelmyV. MetagNorbert TrautmannE. KankeleitM. KrämerR. KriegW. BoninHartmut Backesubject
Nuclear reactionElastic scatteringPhysicsAntiparticleFissionAstrophysics::High Energy Astrophysical PhenomenaNuclear TheoryGeneral Physics and AstronomyNuclear physicssymbols.namesakePositronNuclear fissionAntimattersymbolsPhysics::Accelerator PhysicsRutherford scatteringAtomic physicsNuclear Experimentdescription
Positron and delta-ray spectra have been measured in coincidence with quasielastic scattered particles and fission fragments from the bombardment of Pd, U, and Cm targets with U beams of energies between 5.9 and 8.4 MeV/u. For collisions leading to a fission reaction, the atomic positron and delta-ray spectra fall off more steeply at high energies than expected from calculations based on pure Rutherford trajectories. A quantitative analysis of this effect is in accord with a nuclear contact time of about 10/sup -21/ s.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1983-06-06 | Physical Review Letters |