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- Geonium_atom abstract "A geonium atom is a useful "atomic system" created in a magnetic Penning trap, named so because it is bound to the Earth. A Penning trap is a combination of a homogeneous magnetic field and an electrostatic quadrupole potential. A single charged particle can be trapped indefinitely. Hans Dehmelt of the University of Washington created the first geonium atom in 1973, stably trapping an electron.In the simplest case, the trapped system consists of only one particle or ion. Such a quantum system is determined by quantum states of one particle, like in the hydrogen atom. Hydrogen consists of two particles, the nucleus and electron, but the electron motion relative to the nucleus is equivalent to one particle in an external field, see center-of-mass frame. The properties of geonium are indeed very different from a typical atom. The charge undergoes cyclotron motion around the trap axis and oscillates along the axis. An inhomogeneous magnetic "bottle field" is applied to measure the quantum properties by the "continuous Stern-Gerlach" technique. Energy levels and g-factor of the particle can be measured with very high precision. Van Dyck, Jr et al. explored the magnetic splitting of geonium spectra in 1978 and in 1987 published high-precision measurements of electron and positron g-factors, which constrained the electron radius.Dehmelt and Wolfgang Paul of Bonn University received the 1989 Nobel Prize for Physics for their work on trapping and measuring individual electrons and ions. Geonium studies of electrons and positrons are one of the best tests of QED and yield precise determinations of the fine-structure constant.".
- Geonium_atom wikiPageID "20178447".
- Geonium_atom wikiPageLength "2690".
- Geonium_atom wikiPageOutDegree "15".
- Geonium_atom wikiPageRevisionID "647603580".
- Geonium_atom wikiPageWikiLink Category:Atomic_physics.
- Geonium_atom wikiPageWikiLink Center-of-mass_frame.
- Geonium_atom wikiPageWikiLink Center-of-momentum_frame.
- Geonium_atom wikiPageWikiLink Charged_particle.
- Geonium_atom wikiPageWikiLink Energy_level.
- Geonium_atom wikiPageWikiLink Fine-structure_constant.
- Geonium_atom wikiPageWikiLink G-factor_(physics).
- Geonium_atom wikiPageWikiLink Hans_Dehmelt.
- Geonium_atom wikiPageWikiLink Hans_Georg_Dehmelt.
- Geonium_atom wikiPageWikiLink Hydrogen_atom.
- Geonium_atom wikiPageWikiLink Hydron_(chemistry).
- Geonium_atom wikiPageWikiLink Ion.
- Geonium_atom wikiPageWikiLink Particle.
- Geonium_atom wikiPageWikiLink Penning_trap.
- Geonium_atom wikiPageWikiLink Physical_system.
- Geonium_atom wikiPageWikiLink Quantum_system.
- Geonium_atom wikiPageWikiLink Stern-Gerlach.
- Geonium_atom wikiPageWikiLink Stern–Gerlach_experiment.
- Geonium_atom wikiPageWikiLink Wolfgang_Paul.
- Geonium_atom wikiPageWikiLinkText "Geonium atom".
- Geonium_atom hasPhotoCollection Geonium_atom.
- Geonium_atom wikiPageUsesTemplate Template:Physics-stub.
- Geonium_atom wikiPageUsesTemplate Template:Reflist.
- Geonium_atom subject Category:Atomic_physics.
- Geonium_atom type Mechanic.
- Geonium_atom type Physic.
- Geonium_atom comment "A geonium atom is a useful "atomic system" created in a magnetic Penning trap, named so because it is bound to the Earth. A Penning trap is a combination of a homogeneous magnetic field and an electrostatic quadrupole potential. A single charged particle can be trapped indefinitely. Hans Dehmelt of the University of Washington created the first geonium atom in 1973, stably trapping an electron.In the simplest case, the trapped system consists of only one particle or ion.".
- Geonium_atom label "Geonium atom".
- Geonium_atom sameAs Atomo_geonio.
- Geonium_atom sameAs m.04y7lmk.
- Geonium_atom sameAs Q3629008.
- Geonium_atom sameAs Q3629008.
- Geonium_atom wasDerivedFrom Geonium_atom?oldid=647603580.
- Geonium_atom isPrimaryTopicOf Geonium_atom.