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Induced THz transitions in Rydberg caesium atoms for application in antihydrogen experiments
- Source :
- Eur.Phys.J.D, Eur.Phys.J.D, 2021, 75 (1), pp.27. ⟨10.1140/epjd/s10053-020-00013-3⟩
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- Antihydrogen atoms are produced at CERN in highly excited Rydberg states. However, precision measurements require anti-atoms in ground state. Whereas experiments currently rely on spontaneous emission only, simulations have shown that THz light can be used to stimulate the decay towards ground state and thus increase the number of anti-atoms available for measurements. We review different possibilities at hand to generate light in the THz range required for the purpose of stimulated deexcitation. We demonstrate the effect of a blackbody type light source, which however presents drawbacks for this application including strong photoionization. Further, we report on the first THz transitions in a beam of Rydberg caesium atoms induced by photomixers and conclude with the implications of the results for the antihydrogen case.[graphic not available: see fulltext][graphic not available: see fulltext] Antihydrogen atoms are produced at CERN in highly excited Rydberg states. However, precision measurements require anti-atoms in ground state. Whereas experiments currently rely on spontaneous emission only, simulations have shown that THz light can be used to stimulate the decay towards ground state and thus increase the number of anti-atoms available for measurements. We review different possibilities at hand to generate light in the THz range required for the purpose of stimulated deexcitation. We demonstrate the effect of a blackbody type light source, which however presents drawbacks for this application including strong photoionization. Further, we report on the first THz transitions in a beam of Rydberg caesium atoms induced by photomixers and conclude with the implications of the results for the antihydrogen case.
- Subjects :
- CERN Lab
Atomic Physics (physics.atom-ph)
Other Fields of Physics
FOS: Physical sciences
chemistry.chemical_element
02 engineering and technology
Photoionization
physics.atom-ph
01 natural sciences
Physics - Atomic Physics
symbols.namesake
photon: particle source
0103 physical sciences
Physics::Atomic and Molecular Clusters
Spontaneous emission
Physics::Atomic Physics
010306 general physics
Antihydrogen
Physics
photon: production
antihydrogen: production
Optical physics
bibliography
binding energy
photon: energy
021001 nanoscience & nanotechnology
[PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph]
Atomic and Molecular Physics, and Optics
chemistry
atom: ground state
Excited state
Caesium
Rydberg formula
symbols
cesium: atom
atom: excited state
Atomic physics
0210 nano-technology
Ground state
Subjects
Details
- ISSN :
- 14346079 and 14346060
- Volume :
- 75
- Database :
- OpenAIRE
- Journal :
- The European Physical Journal D
- Accession number :
- edsair.doi.dedup.....d18e48976c50635a8b7f05559d39749f