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Anti-particle to the electron
The positron or antielectron is the particle with an electric charge of +1e, a spin of 1/2 ħ (the same as the electron), and the same mass as an electron
Positron
Medical imaging technique
Positron emission tomography (PET) is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes
Positron_emission_tomography
Topics referred to by the same term
Look up Positron, positron, positrón, or pósitron in Wiktionary, the free dictionary. A positron is an elementary particle of antimatter. Positron may also
Positron_(disambiguation)
Type of radioactive decay
neutron while releasing a positron and an electron neutrino (νe). Positron emission is mediated by the weak force. The positron is a type of beta particle
Positron_emission
Material composed of antiparticles
component of widely available applications related to beta decay, such as positron emission tomography, radiation therapy, and industrial imaging. In theory
Antimatter
Collision causing gamma ray emission
Electron–positron annihilation occurs when an electron (e− ) and a positron (e+ , the electron's antiparticle) collide. At low energies, the result of
Electron–positron annihilation
Electron–positron_annihilation
Creation of particle-antiparticle pair from a neutral boson
positron, a muon and an antimuon, or a proton and an antiproton. Pair production often refers specifically to a photon creating an electron–positron pair
Pair_production
American healthcare company
Positron Corporation is an American nuclear medicine healthcare company specializing in cardiac Positron Emission Tomography (PET) imaging. Positron is
Positron_Corporation
Type of radioactive decay
which an atomic nucleus emits a beta particle (fast energetic electron or positron), transforming into an isobar of that nuclide. For example, beta decay
Beta_decay
Particle accelerator at CERN, Switzerland
The Large Electron–Positron Collider (LEP) was one of the largest particle accelerators ever constructed. It was built at CERN, a multi-national centre
Large Electron–Positron Collider
Large_Electron–Positron_Collider
Science fiction device in Asimov's work
A positronic brain is a fictional technological device, originally conceived by science fiction writer Isaac Asimov. It functions as a central processing
Positronic_brain
Form of positron emission tomography
Brain positron emission tomography is a form of positron emission tomography (PET) that is used to measure brain metabolism and the distribution of exogenous
Brain positron emission tomography
Brain_positron_emission_tomography
Collision of a particle and its antiparticle
antiparticle to produce other particles, such as an electron colliding with a positron to produce two photons. The total energy and momentum of the initial pair
Annihilation
Elementary particle with negative charge
positron; it is identical to the electron, except that it carries electrical charge of the opposite sign. When an electron collides with a positron,
Electron
Particle with opposite charges
of the electron is the positron (also known as an antielectron). While the electron has a negative electric charge, the positron has a positive electric
Antiparticle
American physicist (1905–1991)
1936 Nobel Prize in Physics with Victor Hess for his discovery of the positron, which confirmed the existence of antimatter. Carl David Anderson was born
Carl_David_Anderson
initial source that provided electrons and positrons to CERN's accelerator complex for the Large Electron–Positron Collider (LEP) from 1989 until 2000. LPI
LEP_Pre-Injector
Non-destructive spectroscopy
Positron annihilation spectroscopy (PAS) or sometimes specifically referred to as positron annihilation lifetime spectroscopy (PALS) is a non-destructive
Positron annihilation spectroscopy
Positron_annihilation_spectroscopy
Electron-positron production from two photons
Breit–Wheeler pair production is a proposed physical process in which a positron–electron pair is created from the collision of two photons. It is the simplest
Breit–Wheeler_process
1992 novel by Isaac Asimov and Robert Silverberg
The Positronic Man is a 1992 novel by American writers Isaac Asimov and Robert Silverberg, based on Asimov's 1976 novelette "The Bicentennial Man". It
The_Positronic_Man
Proposed Chinese electron–positron collider
The Circular Electron Positron Collider (CEPC) is a proposed Chinese electron positron collider for experimenting on the Higgs boson. If built, it would
Circular Electron Positron Collider
Circular_Electron_Positron_Collider
Ionizing radiation
or beta radiation (symbol β), is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus, known as beta decay
Beta_particle
Isotope of fluorine emitting a positron
radiofluorine) is a fluorine radioisotope which is an important source of positrons. Its half-life is 109.734 minutes, less than two hours, and one of the
Fluorine-18
Bound state of an electron and positron
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 hydrogen
Positronium
f|S|i\rangle \;,} where S {\displaystyle S} is the S-matrix. The electron-positron annihilation interaction: e + e − → 2 γ {\displaystyle e^{+}e^{-}\to 2\gamma
Initial and final state radiation
Initial_and_final_state_radiation
Qatari professor (born 1959)
Ilham Al-Qaradawi is a Qatari professor of positron and radiation physics at Qatar University and adjunct professor of physics at Texas A&M University
Ilham_Al-Qaradawi
Electron-positron scattering
In quantum electrodynamics, Bhabha scattering is the electron-positron scattering process: e + e − → e + e − {\displaystyle e^{+}e^{-}\rightarrow e^{+}e^{-}}
Bhabha_scattering
Chinese particle accelerator
The Beijing Electron–Positron Collider II (BEPC II) is a Chinese electron–positron collider, a type of particle accelerator, located in Shijingshan District
Beijing Electron–Positron Collider II
Beijing_Electron–Positron_Collider_II
Particle accelerator
The Positron–Electron Tandem Ring Accelerator (PETRA) is one of the particle accelerators at the German national laboratory DESY in Hamburg, Germany. At
Positron–Electron Tandem Ring Accelerator
Positron–Electron_Tandem_Ring_Accelerator
Exotic particle made of an antiproton and positron
composed of an electron and proton, the antihydrogen atom is made up of a positron and antiproton. Scientists hope that studying antihydrogen may shed light
Antihydrogen
Imaging procedure used to detect breast cancer
Positron emission mammography (PEM) is a nuclear medicine imaging modality used to detect or characterise breast cancer. Mammography typically refers to
Positron_emission_mammography
Elementary particle with extremely low mass
(in nuclear beta decay), electron neutrinos only appear together with positrons (anti-electrons) or electron-antineutrinos, whereas electron antineutrinos
Neutrino
Historical critique of quantum mechanics
experiment can be explained using electron–positron pairs. Suppose we have a source that emits electron–positron pairs, with the electron sent to destination
Einstein–Podolsky–Rosen paradox
Einstein–Podolsky–Rosen_paradox
1983 video game
Positron is a fixed shooter written by Gary Partis for the BBC Micro and Acorn Electron and published by Micro Power in 1983. It was developed on a pre-release
Positron_(video_game)
Study of subatomic particles and forces
the antiparticle of the electron is the positron. The electron has a negative electric charge, the positron has a positive charge. These antiparticles
Particle_physics
Imbalance of matter and antimatter in the observable universe
compared to those in our universe, a situation analogous to creating electron–positron pairs in a vacuum. This model, devised by physicists Latham Boyle and Neil
Baryon_asymmetry
Postulate in particle physics
The one-electron universe is the hypothesis that all electrons and positrons are actually manifestations of a single entity moving backwards and forwards
One-electron_universe
Radiation resulting from particle-antiparticle collisions
this refers to 511-keV photons produced by an electron interacting with a positron. These photons are frequently referred to as gamma rays, despite having
Annihilation_radiation
American industrial rock band
career. After leaving Wax Trax! Records, they moved to Randall's own label, Positron! Records. In 2007, the band disbanded, and Randall pursued a solo career
Sister_Machine_Gun
Device used to accumulate positrons
positrons (the antiparticles of electrons) efficiently while minimizing positron loss due to annihilation, which occurs when an electron and positron
Buffer-gas_trap
American independent record label
Positron Records was an independent record label founded in Chicago, Illinois, in 1998 by Chris Randall, frontman of the industrial band Sister Machine
Positron!_Records
Medical imaging method
Positron emission tomography–computed tomography (better known as PET–CT or PET/CT) is a nuclear medicine technique which combines, in a single gantry
PET–CT
Experimental techniques of solid-state physics
Angular Correlation of Electron Positron Annihilation Radiation (ACAR or ACPAR) is a technique of solid state physics to investigate the electronic structure
Angular Correlation of Electron Positron Annihilation Radiation
Angular_Correlation_of_Electron_Positron_Annihilation_Radiation
Burst of gamma rays produced in the Earth's atmosphere
above or inside thunderstorms. Scientists have also detected energetic positrons and electrons produced by terrestrial gamma-ray flashes. Terrestrial gamma-ray
Terrestrial_gamma-ray_flash
Decay of strong electromagnetic fields into particles
It is a prediction of quantum electrodynamics (QED) in which electron–positron pairs are spontaneously created in the presence of an electric field, thereby
Schwinger_effect
American manufacturing company
Positronic is a manufacturing company based in Springfield, Missouri. The company manufactures and supplies electronic connectors that are utilized in
Positronic_(company)
Type of particle accelerator that performs particle collisions
injection accelerator that achieves a much lower flux. The first electron-positron colliders were built in late 1950s-early 1960s in Italy, at the Istituto
Collider
Isotope of copper emitting both beta+ and beta- and used in PET scan
is a positron and beta emitting isotope of copper (exhibiting both forms of beta decay), with applications in molecular radiotherapy and positron emission
Copper-64
Compact astronomical body
the black hole plunges inward, high energy X-ray emission from electron-positron pairs illuminates the gas further out, appearing red-shifted due to relativistic
Black_hole
Particle detector for visualizing ionizing radiation
the advent of the bubble chamber. In particular, the discoveries of the positron in 1932 (see Fig. 1) and the muon in 1936, both by Carl Anderson (awarded
Cloud_chamber
Emissions from unstable atomic nuclei
the positron in cosmic ray products, it was realized that the same process that operates in classical beta decay can also produce positrons (positron emission)
Radioactive_decay
Process in which a proton-rich nuclide absorbs an inner atomic electron
emitting a positron. Electron capture is always an alternative decay mode for radioactive isotopes that do have sufficient energy to decay by positron emission
Electron_capture
the most common isotope used for this procedure. This is due to its 97% positron emission and relatively long 109.8 min half-life. The half-life allows
Radiofluorination
Rockets using antimatter as their power source
pellets of antihydrogen. This requires cooling of antiprotons, binding to positrons, and capture of the resulting antihydrogen atoms - tasks which have, as
Antimatter propulsion spacecraft
Antimatter_propulsion_spacecraft
2015 novel by Margaret Atwood
set in the same near-future dystopia as the darkly comic Byliner serial Positron which was released online. Stan and Charmaine are a married couple who
The_Heart_Goes_Last
Conceptual opposite of an electron
particles, holes are rather quasiparticles; they are different from the positron, which is the antiparticle of the electron. (See also Dirac sea.) In crystals
Electron_hole
Smallest unit of a chemical element
(except in electron capture) causes the emission of a positron and a neutrino. The electron or positron emissions are called beta particles. Beta decay either
Atom
This is a list of positron emission tomography (PET) radiotracers. These are chemical compounds in which one or more atoms have been replaced by a short-lived
List_of_PET_radiotracers
Radioligand used for diagnostic purposes
is a type of radioligand that is used for the diagnostic purposes via positron emission tomography imaging technique. PET is a functional imaging technique
PET_radiotracer
Set of techniques to measure and visualize aspects of the nervous system
Functional neuroimaging is used to study brain function, often using fMRI, positron emission tomography (PET), and magnetoencephalography (MEG). The early
Neuroimaging
Medical specialty
imaging modality. Single photon emission computed tomography (SPECT) and positron emission tomography (PET) scans are the two most common imaging modalities
Nuclear_medicine
Subatomic particle
degrees of freedom for decay. Muon decay always produces an electron (or positron) and two types of neutrinos. Like all elementary particles, the muon has
Muon
Japanese high-energy physics organization
1985: The AR accelerated a positron beam to 5 GeV. 1986: The TRISTAN Main Ring (MR) accelerated both electron and positron beams to 25.5 GeV. 1988: The
KEK
Subatomic particle having no substructure
bosons. v t e Notes: [†] An anti-electron (e+ ) is conventionally called a "positron". [‡] The known force carrier bosons all have spin = 1. The hypothetical
Elementary_particle
Transient quantum fluctuation (physics)
spontaneous production of particle-antiparticle pairs (such as electron-positron). Lamb shift of positions of atomic levels. The impedance of free space
Virtual_particle
Medical diagnostic method
Positron emission tomography–magnetic resonance imaging (PET/MRI, PET–MRI, or PET/MR) is a hybrid imaging technology that incorporates magnetic resonance
PET/MRI
Quasiparticle which is a bound state of an electron and an electron hole
mechanical electron state with a positive charge, an analogue in crystal of a positron. Because of the attractive Coulomb force between the electron and the hole
Exciton
European particle physics research centre
determination of the number of light neutrino families at the Large Electron–Positron Collider (LEP) operating on the Z boson peak 1995: The first creation of
CERN
Chinese physicist (1902–1998)
of the positron. While a graduate student at Caltech in 1930, Chao was the first to experimentally identify positrons through electron–positron annihilation
Chung-Yao_Chao
is a positron-emitting isotope with a relatively long half-life, about 2.6 years. It is used to create test-objects and point-sources for positron emission
Isotopes_of_sodium
2004 film by Alex Proyas
robots is loosely based on a similar scene in "Little Lost Robot". The positronic brains of Sonny and his fellow robots first appeared in the story "Catch
I,_Robot_(film)
Hypothetical particle decay process of a proton
{\displaystyle \tau _{p}} ) is 2.4×1034 years (in the decay channel into a positron and a neutral pion: p → e+ + π0). According to the Standard Model, the
Proton_decay
Interplay between observation, experiment, and theory in science
This cloud chamber photograph is the first observational evidence of positrons, 2 August 1932; interpretable only through prior theory.
Scientific_method
Fictional set of rules by Isaac Asimov
young-adult fiction. The Laws are incorporated into almost all of the positronic robots appearing in his fiction, and cannot be bypassed, being intended
Three_Laws_of_Robotics
a mechanical construct of North Central Positronics. A cyborg, Shardik was built by North Central Positronics to serve as one of the twelve Guardians
List of The Dark Tower characters
List_of_The_Dark_Tower_characters
Particle detector on the International Space Station
400,000 positrons, with the positron to electron fraction increasing from 10 GeV to 250 GeV. (Later results have shown a decrease in positron fraction
Alpha_Magnetic_Spectrometer
Pharmaceutical drug which emits radiation, used as a diagnostic or therapeutic agent
emitter. 11C is a positron emitter. 14C is a beta emitter. 13N is a positron emitter. 15O is a positron emitter. 18F is a positron emitter with a half-life
Radiopharmaceutical
Elementary particle that mediates the strong force
revealed in 1978 summer conferences, the PLUTO detector at the electron-positron collider DORIS (DESY) produced the first evidence that the hadronic decays
Gluon
Harmful high-frequency radiation
cosmic rays interact with Earth's atmosphere, including muons, mesons, and positrons. Cosmic rays may also produce radioisotopes on Earth (for example, carbon-14)
Ionizing_radiation
Diagnostic imaging test in nuclear medicine
process similar to the capture of X-ray images. In contrast, SPECT and positron emission tomography (PET) form 3-dimensional images and are therefore classified
Scintigraphy
Combination of cancer diagnosis and treatment
involve a medical imaging component, such as radiotracers, contrast agents, positron emission tomography, and magnetic resonance imaging. The term "theranostic"
Theranostics
Concept in quantum mechanics
Curved arc shows a cloud chamber trajectory of a positron acting like a particle.
Wave–particle_duality
Medical diagnostic method
Cardiac PET (or cardiac positron emission tomography) is a form of diagnostic imaging in which the presence of heart disease is evaluated using a PET scanner
Cardiac_PET
ALEPH was a particle detector at the Large Electron-Positron collider (LEP) at CERN. It was designed to explore the physics predicted by the Standard Model
ALEPH_experiment
Hypothetical object
collision between an electron and a positron. There were natural explanations for such readings. In particular positrons can be produced indirectly by the
Antimatter_comet
Nuclear reaction between an electron antineutrino and proton
involving an electron antineutrino scattering off a proton, creating a positron and a neutron. This process is commonly used in the detection of electron
Inverse_beta_decay
Exotic molecule consisting of a hydrogen atom bound to a positronium atom
to an exotic atom of positronium (the combination of an electron and a positron). Its formula is PsH. It was predicted to exist in 1951 by A. Ore, and
Positronium_hydride
Type of radioactive decay
the nucleus emits two detectable beta particles, which are electrons or positrons. The literature distinguishes between two types of double beta decay:
Double_beta_decay
Class of elementary particles
L) and right-handed fields are denoted by a capital R subscript (e.g. a positron e+ R). Right-handed neutrinos and left-handed anti-neutrinos have no possible
Lepton
Antimatter research project
main subsystems: the antiproton catching trap, the positron accumulator, the antiproton/positron mixing trap, and the antihydrogen annihilation detector
ATHENA_experiment
Collaboration at the Antiproton Decelerator
ATRAP accumulates positrons emitted from a radioactive 22Na source. There are two effective ways to slow down the fast positrons by inelastic processes
ATRAP_experiment
Type of quark
quarks can be produced via electron–positron collisions or in hadron collisions. Using different energies, electron–positron colliders can produce psi or upsilon
Charm_quark
Stream of ionized matter flowing away from a rotating astronomical object
electrons, and positrons, while others are consistent with jets composed of positron–electron plasma. Trace nuclei swept up in a relativistic positron–electron
Astrophysical_jet
SPEAR (originally Stanford Positron Electron Accelerating Ring) was a particle physics collider at the SLAC National Accelerator Laboratory. It began running
SPEAR
Field of physics that studies atomic interactions
energetic helium nucleus, or beta decay, in which they eject an electron (or positron). After one of these decays the resultant nucleus may be left in an excited
Nuclear_physics
Gauge boson self-energy due to interactions with virtual particles
in which a background electromagnetic field produces virtual electron–positron pairs that change the distribution of charges and currents that generated
Vacuum_polarization
biomolecules for nuclear medicine; for example, the positron emitters 75Br and 76Br can be used for positron emission tomography. Radiobromine has the advantage
Isotopes_of_bromine
Ejection of an electron from the surface of matter, or atomic nucleus
decay (β− decay), where a beta particle (a fast energetic electron or positron) is emitted from an atomic nucleus transforming the original nuclide to
Electron_emission
Device to extract gallium-68 from germanium-68
A germanium-68/gallium-68 generator is a device used to extract the positron-emitting isotope 68Ga of gallium from a source of decaying germanium-68. The
Gallium-68_generator
Imaging by sections or sectioning using a penetrative wave
spectroscopy POT 2009 Positron emission tomography Positron emission PET Positron emission tomography - computed tomography Positron emission & X-ray PET-CT
Tomography
POSITRON
POSITRON
POSITRON
POSITRON
Girl/Female
Hebrew Russian American
Palm tree.. Biblical Tamara was daughter of King David and sister to Absalom.
Girl/Female
American, British, English
Watchful; Vigilant; A Phonetic Form of the Initials Kc; Similar to the Irish Name Casey; Alert; Vigorous
Boy/Male
Hindu
Boy/Male
Hindu
Girl/Female
German French
Hardworking.
Girl/Female
Australian, British, Celtic, Christian, Czechoslovakian, English, Gaelic, Irish, Scandinavian, Swedish
Form of Bridget; Resolute Strength; Power; Strong; To Help; The Exalted One
Boy/Male
British, English
Bridge Protector
Boy/Male
Hindu, Indian, Marathi
A Shout of Joy
Boy/Male
Tamil
A special star
Girl/Female
Latin
Healer.
POSITRON
POSITRON
POSITRON
POSITRON
POSITRON