Published January 16, 2024
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Measurements of Penning-Malmberg trap patch potentials and associated performance degradation
Creators
- 1. Department of Physics, Faculty of Science and Engineering, Swansea University, Swansea SA2 8PP, United Kingdom
- 2. School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
- 3. Cockcroft Institute, Sci-Tech Daresbury, Warrington WA4 4AD, United Kingdom
- 4. TRIUMF, 4004 Wesbrook Mall, Vancouver BC, V6T 2A3, Canada
- 5. Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-972, Brazil
- 6. Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA
- 7. Department of Physics and Astronomy, University of British Columbia, Vancouver BC, V6T 1Z1, Canada
Description
Antiprotons created by laser ionization of antihydrogen are observed to rapidly escape the ALPHA trap. Further, positron plasmas heat more quickly after the trap is illuminated by laser light for several hours. These phenomena can be caused by patch potentials—variations in the electrical potential along metal surfaces. A simple model of the effects of patch potentials explains the particle loss, and an experimental technique using trapped electrons is developed for measuring the electric field produced by the patch potentials. The model is validated by controlled experiments and simulations.
Files
10.1103_PhysRevResearch.6.L012008.pdf
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(1.7 MB)
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Additional details
Identifiers
- DOI
- 10.1103/PhysRevResearch.6.L012008;
- Crossref Funder ID
- 10.13039/501100003593; 10.13039/501100004586; 10.13039/501100000038; 10.13039/100012419; 10.13039/501100003150; 10.13039/100020038; 10.13039/501100003977; 10.13039/501100000271; 10.13039/501100000266; 10.13039/100000015; 10.13039/100000001;
Publishing Information
- Journal Title
- Physical Review Research
- Journal Volume
- 6
- Journal Issue
- 1
- Journal Page Range
- 8 pgs.
- ISSN
- 2643-1564
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ALPHA PARTICLES; ELECTRIC FIELDS; HEAT; IONIZATION; LASER RADIATION; LASER-PRODUCED PLASMA; PARTICLE LOSSES; PERFORMANCE; POSITRONS; SIMULATION; TRAPPED ELECTRONS; TRAPPING; TRAPS
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; CHARGED PARTICLES; ELECTROMAGNETIC RADIATION; ELECTRONS; ELEMENTARY PARTICLES; ENERGY; FERMIONS; IONIZING RADIATIONS; LEPTONS; LOSSES; MATTER; PLASMA; RADIATIONS
Optional Information
- Notes
- Contact Email: a.c@berkeley.edu; Contact Email: joel@physics.berkeley.edu; Record automatically processed
- Funding organization
- Conselho Nacional de Desenvolvimento Científico e Tecnológico; Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro; Natural Sciences and Engineering Research Council of Canada; TRIUMF; Fonds Québécois de la Recherche sur la Nature et les Technologies; Ny Carlsbergfondet; Israel Science Foundation; Science and Technology Facilities Council; Engineering and Physical Sciences Research Council; U.S. Department of Energy; National Science Foundation