• Thumbnail for Positronium
    Positronium (Ps) is a system consisting of an electron and its anti-particle, a positron, bound together into an exotic atom, specifically an onium. Unlike...
    22 KB (2,546 words) - 05:05, 8 April 2024
  • Thumbnail for Positronium hydride
    Positronium hydride, or hydrogen positride is an exotic molecule consisting of a hydrogen atom bound to an exotic atom of positronium (that is a combination...
    9 KB (975 words) - 18:13, 21 April 2024
  • Di-positronium, or dipositronium, is an exotic molecule consisting of two atoms of positronium. It was predicted to exist in 1946 by John Archibald Wheeler...
    3 KB (345 words) - 08:46, 30 January 2024
  • contains one or more exotic atoms. Di-positronium, two bound positronium atoms Positronium hydride, a positronium atom bound to a hydrogen atom "Exotic...
    12 KB (1,427 words) - 03:53, 5 April 2024
  • Thumbnail for Singlet state
    positron in positronium can also have identical or parallel spin orientations, which results in an experimentally-distinct form of positronium with a spin 1...
    11 KB (1,637 words) - 09:43, 13 April 2024
  • Thumbnail for Onium
    nomenclature. Positronium is an onium which consists of an electron and a positron bound together as a long-lived metastable state. Positronium has been studied...
    3 KB (329 words) - 19:12, 22 February 2024
  • energy levels of positronium yields α−1 = 137.034(16). Measurements of α can also be extracted from the positronium decay rate. Positronium decays through...
    16 KB (2,202 words) - 11:27, 19 January 2024
  • For example, the radius of positronium is approximately 2a0{\displaystyle 2\,a_{0}}, since the reduced mass of the positronium system is half the electron...
    7 KB (957 words) - 21:51, 31 March 2024
  • Thumbnail for Positron annihilation spectroscopy
    positronium. Positronium is a metastable hydrogen-like bound state of an electron and a positron which can exist in two spin states. Para-positronium...
    10 KB (1,198 words) - 12:33, 17 October 2023
  • Thumbnail for Quarkonium
    particle and its own antiparticle. The name "quarkonium" is analogous to positronium, the bound state of electron and anti-electron. The particles are short-lived...
    19 KB (1,523 words) - 23:50, 10 August 2023
  • Thumbnail for Annihilation
    diagram showing the mutual annihilation of a bound state electron positron pair into two photons. This bound state is more commonly known as positronium....
    12 KB (1,373 words) - 16:23, 2 April 2024
  • Thumbnail for Electron–positron annihilation
    scattering List of particles Meitner–Hupfeld effect Pair production Positronium L. Sodickson; W. Bowman; J. Stephenson; R. Weinstein (1970). "Single-Quantum...
    7 KB (823 words) - 10:13, 16 March 2024
  • Thumbnail for Muonium
    muonium ( μ+ e− ) is more similar to atomic hydrogen ( p+ e− ) than positronium ( e+ e− ). Its Bohr radius and ionization energy are within 0.5% of hydrogen...
    6 KB (593 words) - 19:53, 17 November 2023
  • Thumbnail for Chemical symbol
    tennessine: see above) Vi: vinyl Exotic atoms: Mu: muonium Pn: protonium Ps: positronium Hazard pictographs are another type of symbols used in chemistry. List...
    64 KB (2,124 words) - 04:03, 10 April 2024
  • Thumbnail for J/psi meson
    by analogy with positronium, which also consists of a particle and its antiparticle (an electron and positron in the case of positronium). OZI rule List...
    18 KB (1,861 words) - 17:23, 21 September 2023
  • order to efficiently form positronium (Ps) - even at cryogenic temperatures in Ultra-high vacuum (UHV). A cloud of positronium emerging from the target...
    10 KB (937 words) - 05:27, 8 April 2024
  • Thumbnail for Positron
    within a solid material. Beta particle Buffer-gas trap List of particles Positronium Positronic brain "2018 CODATA Value: electron mass". The NIST Reference...
    34 KB (3,705 words) - 04:16, 29 February 2024
  • it induces oscillations between positronium and mirror positronium. Positronium could then turn into mirror positronium and then decay into mirror photons...
    27 KB (3,058 words) - 06:39, 10 April 2024
  • Thumbnail for Massachusetts Institute of Technology
    Lander was one of the principal leaders of the Human Genome Project. Positronium atoms, synthetic penicillin, synthetic self-replicating molecules, and...
    213 KB (19,776 words) - 01:42, 25 April 2024
  • Thumbnail for Martin Deutsch
    professor of physics at MIT. He is best known for being the discoverer of positronium. Deutsch was born in Vienna during the First World War to a Jewish family...
    5 KB (529 words) - 15:06, 22 April 2024
  • Thumbnail for Antihydrogen
    source is generated by the charge exchange reaction between Rydberg positronium atoms -- produced via the injection of a pulsed positron beam into a...
    21 KB (2,200 words) - 04:26, 19 February 2024
  • PS4−xOx3− (x = 0, 1, 2, or 3) Polystyrene, a common type of plastic Ps, positronium, pseudo-chemical symbol Paddle steamer, abbreviated PS in vessel prefixes...
    5 KB (646 words) - 16:49, 16 April 2024
  • Thumbnail for Bethe–Salpeter equation
    applications for it can be found in any quantum field theory. Some examples are positronium (bound state of an electron–positron pair), excitons (bound states of...
    10 KB (1,435 words) - 18:05, 27 October 2023
  • Examples of such atoms include positronium ( e−   e+ ), muonium ( e−   μ+ ), and "true muonium" ( μ−   μ+ ). Of these positronium and muonium have been experimentally...
    32 KB (2,983 words) - 21:04, 11 April 2024
  • Hadrons Others Atomic nuclei Atoms Exotic atoms Positronium Muonium Tauonium Onia Pionium Protonium Superatoms Molecules Hypothetical...
    46 KB (5,551 words) - 16:03, 11 April 2024
  • Thumbnail for Hubert Reeves
    from McGill University in 1956 with a thesis entitled "Formation of Positronium in Hydrogen and Helium" and a PhD degree at Cornell University in 1960...
    11 KB (714 words) - 18:46, 14 April 2024
  • Hence, a 1P state in quarkonium corresponds to a 2p state in an atom or positronium. Azimuthal quantum number Electron configuration Mnemonics for orbital...
    6 KB (636 words) - 16:26, 21 September 2022
  • Thumbnail for Lepton
    other particles to form various composite particles such as atoms and positronium, while neutrinos rarely interact with anything, and are consequently...
    42 KB (4,288 words) - 03:48, 5 April 2024
  • Thumbnail for Atomic radius
    with a single electron, such as hydrogen, singly ionized helium, and positronium. Although the model itself is now obsolete, the Bohr radius for the hydrogen...
    28 KB (1,808 words) - 20:02, 4 April 2024
  • Thumbnail for Higgs boson
    Hadrons Others Atomic nuclei Atoms Exotic atoms Positronium Muonium Tauonium Onia Pionium Protonium Superatoms Molecules Hypothetical...
    240 KB (26,268 words) - 18:54, 11 April 2024