Observation of a Peak Structure in Positron Spectra from U+Cm Collisions
- 19 December 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 51 (25) , 2261-2264
- https://doi.org/10.1103/physrevlett.51.2261
Abstract
A narrow peak structure has been observed in positron spectra from U+Cm collisions at bombarding energies near the Coulomb barrier whose origin cannot be associated with established dynamic mechanisms of positron production involving Rutherford trajectories only. The peak's energy is centered at 316±10 keV. Its width of ∼ 80 keV, dominated by Doppler broadening, implies that the emitting system exists for longer than ∼ sec.
Keywords
This publication has 11 references indexed in Scilit:
- Positron production in heavy-ion collisions. I. Analytical description of the resonance in the positron continuum for supercritical atomsPhysical Review A, 1982
- Internal electron-positron pair production from electric monopole transitionsThe European Physical Journal A, 1981
- The decay of the vacuum in the field of superheavy nuclear systemsThe European Physical Journal A, 1981
- Theory of positron production in heavy-ion collisionsPhysical Review A, 1981
- Positrons from 1.4-GeV Uranium-Atom CollisionsPhysical Review Letters, 1979
- Observation of Positron Creation in Superheavy Ion-Atom Collision SystemsPhysical Review Letters, 1978
- Positron production in heavy-ion collisionsPhysics Letters B, 1977
- Electron shells in over-critical external fieldsThe European Physical Journal A, 1972
- Interior electron shells in superheavy nucleiThe European Physical Journal A, 1969
- The critical charge of the nucleus and the vacuum polarizationLettere al Nuovo Cimento (1971-1985), 1969