Observation of correlated narrow-peak structures in positron and electron spectra from superheavy collision systems
- 3 February 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 56 (5) , 444-447
- https://doi.org/10.1103/physrevlett.56.444
Abstract
We have observed that the positrons associated with a narrow peak in the positron spectrum from U+Th collisions are correlated with the simultaneous emission of electrons whose energy spectrum also contains a narrow peak. The mean energies and widths of the two peaks are equal within measurement errors. Neither the coincidence peak intensity nor the energy distributions of the positrons and electrons can be accounted for by known nuclear internal conversion processes. Similar observations have also been made in the Th+Th and Th+Cm collision systems.Keywords
This publication has 9 references indexed in Scilit:
- Production mechanisms for a new neutral particle below 2 MeVPhysical Review Letters, 1986
- Production of new particles in heavy-ion collisionsPhysical Review Letters, 1985
- Is there evidence for the production of a new particle in heavy-ion collisions?Journal of Physics G: Nuclear Physics, 1985
- Anomalous Positron Peaks from Supercritical Collision SystemsPhysical Review Letters, 1985
- Narrow positron lines from U-U and U-Th collisionsPhysics Letters B, 1984
- Observation of a Peak Structure in Positron Spectra from U+Cm CollisionsPhysical Review Letters, 1983
- Positrons from supercritical fields of giant nuclear systemsZeitschrift für Physik A Atoms and Nuclei, 1983
- Estimates of the Nuclear Time Delay in Dissipative U + U and U + Cm Collisions Derived from the Shape of Positron and-Ray SpectraPhysical Review Letters, 1983
- The decay of the vacuum in the field of superheavy nuclear systemsThe European Physical Journal A, 1981