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Encyclopedia > Antarctic Muon and Neutrino Detector Array

The Antarctic Muon And Neutrino Detector Array is a neutrino telescope buried in a depth of about 1500 to 1900 meters under the Antarctic ice cap. In its latest development stage, known as AMANDA-II, AMANDA is made up of an array of 677 optical modules mounted on 19 separate strings that are spread out in a circle with a diameter of 200 meters.
AMANDA detects neutrinos by measuring the Cherenkov radiation emitted by particles produced in collisions of neutrinos with nuclei of oxygen or hydrogen atoms contained in the surrounding water ice. This information can then be used to reconstruct the parameters of the neutrino, such as spatial origin and energy. Areas of research conducted with AMANDA include neutrino astronomy and the search for Dark Matter.
In 2005, after nine years of operation, AMANDA officially became part of its successor project, IceCube. The neutrino is an elementary particle. ... 50 cm refracting telescope at Nice Observatory. ... World map showing location of Antarctica A satellite composite image of Antarctica For the Kim Stanley Robinson novel see Antarctica (novel) Antarctica (from Greek ἀνταρκτικός, opposite the arctic) is a continent surrounding the Earths South Pole. ... Cherenkov effect at the [http://www. ... The neutrino is an elementary particle. ... A stylized representation of a lithium atom. ... General Name, Symbol, Number oxygen, O, 8 Chemical series nonmetals Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Properties For alternative meanings see atom (disambiguation). ... Neutrino astronomy is the science of observing astronomical phenomena by detecting neutrinos, a product of thermonuclear reactions going on inside every star. ... In cosmology, dark matter consists of matter particles that cannot be detected by their emitted radiation but whose presence can be inferred from gravitational effects on visible matter such as stars and galaxies. ... 2005 is a common year starting on Saturday of the Gregorian calendar and is the current year. ... The IceCube Neutrino Detector is a neutrino telescope currently under construction at the South Pole. ...


See also

Project DUMAND Project DUMAND (Deep Underwater Muon And Neutrino Detector) was a proposed underwater neutrino telescope to be built in the Pacific Ocean, off the shore of Hawaii, a kilometer beneath the surface. ...


External links


  Results from FactBites:
 
Neutrino astronomy: Definition and Much More from Answers.com (1722 words)
Neutrino detectors must be placed deep underground or underwater to escape the backgrounds caused by the rain of cosmic rays upon the atmosphere.
The direction of incident neutrinos is determined by recording the arrival time of individual photons using a three-dimensional array of detector modules containing one photomultiplier tube each.
AMANDA is currently in the process of being upgraded to the IceCube observatory, eventually increasing the volume of the detector array to one cubic kilometer.
muon: Definition and Much More from Answers.com (1376 words)
Muons are produced by the weak decay of pions into a muon and a muon antineutrino.
Muons can be substituted for electrons in orbit around the nucleus of an atom; the resulting atom is long-lived enough to exhibit behavior that further supports the close resemblance between the muon and the electron.
The muons from high energy cosmic rays are often moving at very high velocities, so despite their short lifetime, the time dilation effect of special relativity makes many of them survive the flight to the earth's surface.
  More results at FactBites »


 

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