Objective
The cross sections for positron impact ionization of atomic hydrogen have been measured from close to threshold up to a kinetic energy of 700 eV and compared to similar data for electron projectiles. The positron values are found to exceed those for electrons at intermediate energies by around 40%, in accord with several recent theories.
Following from the measurement of the ionization cross section the apparatus will be modified to allow the investigation of positronium formation. Antiparticle atomic hydrogen investigations will be extended to the antiproton projectile.
It is proposed that existing technologies of low energy e+ beams and radio-frequency discharge H atom beam sources be combined to study e+ -H scattering. Some reactions of this important three body system, namely ionisation and positronium formation, can be readily studied and will offer new tests of fundamental scattering theory.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology electrical engineering, electronic engineering, information engineering information engineering telecommunications radio technology radio frequency
- natural sciences physical sciences theoretical physics particle physics
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
WC1E 7HX London
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.