Search results for "Positron" - New World Encyclopedia
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- Positron emission tomography (PET) is a nuclear medicine imaging technique that produces a three-dimensional image or map of functional processes ...26 KB (3,835 words) - 05:46, 30 November 2022
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- a proton is converted into a neutron, a positron, and an electron neutrino ... ==β+ decay (positron emission) == Unstable atomic nuclei with an excess ...10 KB (1,458 words) - 17:45, 29 September 2023
- an atom and insufficient energy to emit a positron. In such a case, a proton ... less than 1.022 mega electronvolt (MeV), positron emission is forbidden and ...5 KB (705 words) - 15:57, 13 February 2024
- is electron capture (with some alpha and positron emission), and the primary ... the preferred compound for detectors in positron emission tomography (PET.) ...11 KB (1,371 words) - 03:06, 5 November 2022
- is moving in the opposite direction to a positron in complex 'internal ... negative electron becomes a positive positron—and color charge—a red ...23 KB (3,458 words) - 06:25, 31 July 2023
- :: Positron ( link=yes|Positron ) :: Antimuon ( link=yes|Antimuon ) :: Antitau ( ...16 KB (2,185 words) - 17:26, 26 March 2024
- corresponding antiparticles (such as the positron or the electron antineutrino ... | Electron / Positron | e^- \, / \, e^+ | −1 / +1 | 0.511 ...8 KB (1,168 words) - 21:59, 25 October 2022
- imaging by the technique called PET (positron emission tomography), and ... medical imaging by a technique known as positron emission tomography. ...13 KB (1,855 words) - 17:47, 28 March 2024
- Positron emission tomography (PET) is a nuclear medicine imaging technique that produces a three-dimensional image or map of functional processes ...26 KB (3,835 words) - 05:46, 30 November 2022
- other atoms to produce short-lived, positron-emitting isotopes suitable ... other atoms to produce short-lived positron-emitting isotopes suitable ...12 KB (1,883 words) - 06:53, 12 January 2024
- Gamma rays of specific frequencies are produced during electron-positron ... converted into the mass of an electron-positron pair. A positron is the ...16 KB (2,549 words) - 04:20, 18 April 2024
- of the electron is its antiparticle, the positron. Charged particles ... The antiparticle of the electron is the positron (see below). Electrons are ...10 KB (1,515 words) - 15:57, 13 February 2024
- It is also used in detectors for positron emission tomography. == Applications == Bismuth and its compounds have many applications, a number ...14 KB (1,891 words) - 17:59, 31 October 2023
- |style="background:#efefef"|Positron |e^+\, |+1\, ... The Large Electron-Positron Collider at CERN tested various predictions ...25 KB (3,578 words) - 16:25, 8 February 2023
- been (and still are) used as probes--the positron was discovered in this way ... 3 km (2 miles) long. SLAC is an electron-positron collider. ...19 KB (2,915 words) - 18:45, 23 March 2023
- Shortly after the discovery of the positron in cosmic ray products, ... blood. Fluorine-18 decays by releasing a positron whose life is soon ended ...30 KB (4,559 words) - 22:46, 7 December 2022
- Polonium (chemical symbol Po, atomic number 84) is a rare, extremely toxic, and highly radioactive chemical element. It is found in small amounts ...11 KB (1,554 words) - 08:39, 24 November 2022
- regularly separate into an electron and positron pair, which take off as ... the anti-neutrino, the anti-electron (or positron), and the anti-quarks. Antimatter ...20 KB (3,162 words) - 21:09, 26 February 2023
- Astatine (chemical symbol At, atomic number 85) is the rarest naturally occurring chemical element. It is a member of the halogen family of elements ...6 KB (808 words) - 05:08, 18 August 2023
- magnetic resonance imaging (MRI), and positron emission tomography (PET.) ... in medical imaging equipment such as positron emission tomography (PET ...13 KB (1,750 words) - 07:39, 15 April 2024
- to these 12 particles. The antielectron (positron) antielectron ... | antielectron (positron) || antielectron || muon || antimuon || tauon ...18 KB (2,400 words) - 16:06, 13 February 2024
- * Positron * Proton == Notes == == References == * Forward, Robert L. 2001. Mirror Matter: Pioneering Antimatter Physics. Lincoln, NE: Backinprint ...8 KB (1,066 words) - 01:57, 9 January 2023
- argon-40) (11.2 percent) by electron capture and positron emission, and it decays to stable 40Ca (calcium-40) (88.8 percent) by beta decay. The half-life ...18 KB (2,538 words) - 05:52, 30 November 2022
- bombard the nucleus and cause an electron and a positron to be formed, a process called pair production. ==Applications== === Compton scattering === ...11 KB (1,638 words) - 00:23, 8 January 2024
- work led Dirac to predict the existence of the positron, the electron's antiparticle, which he interpreted in terms of what came to be called ...20 KB (2,926 words) - 17:08, 26 March 2023
- years, decays to stable 40Ar (11.2%) by electron capture and positron emission, and it also transforms to stable 40Ca (88.8%) via beta decay ...11 KB (1,517 words) - 06:25, 12 August 2023
- Rhodium (chemical symbol Rh, atomic number 45) is a rare, silvery-white, inert metal. It is a member of the platinum group of elements and is ...13 KB (1,685 words) - 20:04, 8 December 2022
- Strontium (chemical symbol Sr, atomic number 38) is a soft, silvery white metallic element that occurs naturally in the minerals celestite and ...14 KB (1,860 words) - 21:04, 26 February 2023
- |- | colspan="2" align="center" | [[image:Ga,31.jpg|125px|Typical (melted blob)]] [[Image:Gallium1_640x480.jpg|130px|Crystallized ...15 KB (2,122 words) - 04:06, 18 April 2024
- Manganese (chemical symbol Mn, atomic number 25) is a gray-white metal that combines with other elements in various proportions. In nature, it ...14 KB (1,946 words) - 11:03, 9 March 2023
- Rubidium (chemical symbol Rb, atomic number 37) is a soft, silvery-white metallic element of the alkali metal group. Rb-87, a naturally occurring ...14 KB (1,892 words) - 20:57, 21 December 2022
- include LEP, the Large Electron Positron collider, which was stopped in 2001 and which is now dismantled to give way for LHC; and SPS, or the ...16 KB (2,386 words) - 08:56, 18 November 2022
- an electron cloud in a Penning trap, and positron plasmas. edu/papers/NNP4.pdf Creation and uses of positron plasmas]. Physics of Plasmas ...35 KB (5,311 words) - 07:58, 24 November 2022
- [[Image:Electron-positron-scattering.svg|350px|thumb|right|A Feynman diagram of the exchange of a virtual photon (symbolized by a wavy-line and ...34 KB (4,943 words) - 20:26, 27 September 2023
- Vanadium (chemical symbol V, atomic number 23) is a rare, silver-gray metal. It is found combined in several minerals and is one of the 26 elements ...15 KB (2,022 words) - 14:18, 3 May 2023
- or beta decay, when they eject an electron (or positron). After one of these decays, the resultant nucleus may be left in an excited state, and in this ...18 KB (2,740 words) - 00:29, 17 November 2022
- Zirconium (chemical symbol Zr, atomic number 40) is a strong, lustrous, gray-white metal that resembles titanium. It is obtained chiefly from ...16 KB (2,114 words) - 06:08, 13 June 2023
- Category:Politics and social sciences Category:Psychology In psychology, motivation refers to the initiation, direction, intensity, and persistence ...18 KB (2,702 words) - 17:02, 10 November 2022
- (by emitting an electron, emitting a positron, or capturing an electron ... (by emitting an electron, emitting a positron, or capturing an electron ...43 KB (6,283 words) - 22:03, 13 January 2024
- particle accelerator called the Large Electron-Positron Collider (LEP); superconductive cable (foreground) for the same amount of electric current used ...21 KB (3,041 words) - 23:46, 26 February 2023
- |- | Critical temperature || 1673 K (gray) 24.44 ? 34.76 24.64 553 | 596 | 646 | 706 | 781 | 874 | comment= color1=#cccc99 | color2=black ...21 KB (2,920 words) - 04:00, 15 August 2023
- events. Such virtual events—e.g. electron-positron pair production—cannot be directly observed but do have indirect effects that play a role in ...22 KB (3,234 words) - 17:14, 4 May 2023
- Sodium (chemical symbol Na, atomic number 11) is a member of a group of chemical elements known as alkali metals. Silvery in color, it is soft ...21 KB (3,204 words) - 21:54, 30 January 2023
- Obsessive-compulsive disorder (OCD) is a neurobiobehavioral mental disorder characterized by distressful, time-consuming thoughts (obsessions ...25 KB (3,597 words) - 16:09, 27 November 2022
- -0 to -3 (electron) or from +0 to +3 (positron). The electron anti-neutrino ... no matter particles, dark), and the positron) or asymmetric as in -1 ...42 KB (5,963 words) - 06:44, 13 June 2023
- Category:Politics and social sciences Category:Education Category:Psychology [[Image:Wolfgang-amadeus-mozart 1.jpg|thumb|200 px|Wolfgang Amadeus ...26 KB (3,861 words) - 01:14, 12 April 2023
- A complete atom, with a positron orbiting the nucleus, would be called antideuterium, but antideuterium has not been created as of 2005. The ...31 KB (4,687 words) - 10:07, 29 January 2024
- of synaptic reuptake). Similarly, a positron emission tomography (PET) is able to monitor glucose and oxygen metabolism as well as neurotransmitter ...28 KB (4,199 words) - 22:35, 20 November 2023
- Neuroscience is an interdisciplinary field in science that is organized around the study of the nervous system. As such, the field encompasses ...32 KB (4,338 words) - 04:35, 11 March 2023
- Titanium (chemical symbol Ti, atomic number 22) is a silvery-white, lustrous metal. Light and strong, it is resistant to corrosion, including ...27 KB (3,874 words) - 03:49, 1 May 2023
- In the 1990s, psychologists began using Positron Emission Tomograph (PET) and later, Functional magnetic resonance imaging (fMRI) to image the ...32 KB (4,749 words) - 18:24, 21 August 2023
