Further studies of double ionization of He, Ne, and Ar by fast and slow antiprotons
- 1 December 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 40 (12) , 7366-7368
- https://doi.org/10.1103/physreva.40.7366
Abstract
Measurements of the ratio R between double- and single-ionization cross sections for antiproton impact on He, Ne, and Ar targets are reported for impact energies ranging from 65 keV to 20 MeV. At high energies the results are found to merge with proton results at around 20 MeV, and the high-energy limit of the common ratio is in good agreement with recent first-Born-calculation results for the helium target. The large difference previously observed in the ratio R for protons and antiprotons at energies between 0.5 and 5 MeV is found to persist down to the lowest energies investigated here.Keywords
This publication has 12 references indexed in Scilit:
- First Born calculations of double ionisation of helium by bare-ion projectiles: contributions from d orbitalsJournal of Physics B: Atomic, Molecular and Optical Physics, 1988
- Scattering correlation in double ionization of helium by fast antiprotons and protonsPhysical Review A, 1988
- Multiple ionization of He, Ne, and Ar by fast protons and antiprotonsPhysical Review A, 1987
- Interference between direct and rearrangement mechanisms for double ionizationPhysical Review A, 1987
- effects in the ionization of helium by ion impactPhysical Review A, 1987
- The forced impulse method applied to the double ionisation of helium by collision with high-energy protons, antiprotons and alpha particlesJournal of Physics B: Atomic and Molecular Physics, 1987
- Collisional mechanisms for single and double ionization of He by protons and antiprotonsPhysical Review A, 1987
- Double ionization of helium by protons and antiprotons in the energy range 0.30 to 40 MeVPhysical Review Letters, 1987
- Single and Double Ionization of Helium by Fast Antiproton and Proton ImpactPhysical Review Letters, 1986
- Double Ionization of Helium by Protons and Electrons at High VelocitiesPhysical Review Letters, 1982