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Revelations of the neutrino :

Revelations of the neutrino :. Mass of the neutrino (KATRIN). Outline.  Mass of the neutrino A short biography Properties Mass of the neutrino Tritium beta-decay. A short biography.

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Revelations of the neutrino :

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  1. Revelationsoftheneutrino: Massoftheneutrino (KATRIN) Christoph Wuttke, Mass of the Neutrino

  2. Outline Christoph Wuttke, Mass of the Neutrino  Massoftheneutrino A shortbiography Properties Massoftheneutrino Tritium beta-decay

  3. A shortbiography Christoph Wuttke, Mass of the Neutrino 1930: Processof Beta Decay (nucleus + electron) did not matchwithconservationofenergy, momentumand angular momentum. Wolfgang Pauli postulated a newparticletodescribetheseproblems andcalledit „Neutron“. 1932: James Chadwick discoveredthe neutral massive particel in nucleisand also namedit „Neutron“. 1933: Enrico Fermi namedthefirst „Neutron“ „Neutrino“. Thisconfusion was onlyabouttheelectronneutrino !!! Discovery: NeutrinoTheoreticalExperimental Electron 1930 (Wolfgang Pauli) 1956 (C.Cowan, F.Reines) Myon Late 1940s 1962 (L.Lederman, M.Schwartz,J.Steinberger) Taon Mid 1970s 2000 (DONUT Collaboration)

  4. Properties Christoph Wuttke, Mass of the Neutrino - Weak (andgravitational) interactiononly 40 000 000 000 (4*10^10) neutrinosareflyingthroughyour thumbnaileverysecond! - Neutrino Oscillation Neutrinos canchangetheirflavour! http://www.hk-phy.org/articles/neutrino/neutrino_joke_e.jpg http://www.laguna-science.eu/images/stories/oscill.gif

  5. Massoftheneutrino Christoph Wuttke, Mass of the Neutrino Standard Modell: m=0 Neutrino Oscillation nonzeromass How do youmeasurethemassof such a particle? The answer ist the Beta-decay (of Tritium)! http://www-ik.fzk.de/tritium/overview/zerfall-transparent-10.gif

  6. Outline Christoph Wuttke, Mass of the Neutrino Massoftheneutrino A shortbiography Properties Massoftheneutrino  Tritium beta-decay Measuringtheelectronenergy Kurie Plot Why Tritium? KATRIN experiment

  7. Measuringtheelectronenergy Christoph Wuttke, Mass of the Neutrino : β-spectrum: http://vali.physics.carleton.ca/~watson/Physics/Gifs/Modern_Physics/Beta_decay_spectrum.gif

  8. Christoph Wuttke, Mass of the Neutrino http://www-ik.fzk.de/tritium/overview/talkatdesy_decay.gif

  9. Kurie-Plot Christoph Wuttke, Mass of the Neutrino K(E) E K(E) K(E) E E

  10. Why Tritium? Christoph Wuttke, Mass of the Neutrino - Small decayenergy (18.57 keV)  easiertodetectslowelectrons - Long Half-lifeof 12.3 years - Becauseofsmallenergy highvariation in Kurie-Plot - Tritium Fermifunction nodistortionofβ-spectrum

  11. Outline Christoph Wuttke, Mass of the Neutrino Massoftheneutrino A shortbiography Properties Massoftheneutrino Tritium beta-decay Measuringtheelectronenergy Kurie Plot Why Tritium?  KATRIN experiment KATRIN Main spectrometer Travel ofthe Main spectrometer

  12. KATRIN experiment Christoph Wuttke, Mass of the Neutrino (KArlsruheTRItiumNeutrino experiment) Measuresthemassoftheelectronneutrinowith a sensitivityof 0.2 eV a – Tritium source b – Transport section c – Prespectrometer d – Electron-detector e – Main spectrometer http://www-ik.fzk.de/tritium/icons/logo_KATRIN/katrin-logo-home-large.gif e http://www-ik.fzk.de/tritium/

  13. KATRIN Main spectrometer Christoph Wuttke, Mass of the Neutrino U=18640 V http://www-ik.fzk.de/tritium/em-design/mace_electrodes.gif

  14. Travel ofthe Main Spectrometer Christoph Wuttke, Mass of the Neutrino Deggendorf  Leopoldshafen  Karlsruhe http://www-ik.fzk.de/tritium/spectrometer/Transport-Main-Spectrom4.jpg

  15. Travel ofthe Main spectrometer (2006) Christoph Wuttke, Mass of the Neutrino Travel bysea withthe Annegret PassingJochenstein lock with a safetymarginof 7 cm http://www-ik.fzk.de/tritium/spectrometer/Annegret_DCP_1973.JPG http://www-ik.fzk.de/tritium/spectrometer/IMG_0158.jpg

  16. Christoph Wuttke, Mass of the Neutrino

  17. Sources Christoph Wuttke, Mass of the Neutrino • http://www-ik.fzk.de/tritium/ • N.Schmitz: Neutrinophysik (Teubner 1997) • Prof. Kai Zuber • en.wikipedia.org/wiki/Neutrino

  18. Picture Sources Christoph Wuttke, Mass of the Neutrino • http://www.hk-phy.org/articles/neutrino/neutrino_joke_e.jpg • http://www.laguna-science.eu/images/stories/oscill.gif • http://www-ik.fzk.de/tritium/overview/zerfall-transparent-10.gif • http://www-ik.fzk.de/tritium/overview/talkatdesy_decay.gif • http://yyy.rsmas.miami.edu/groups/tritium/images/h3-molecule.gif • http://www-ik.fzk.de/tritium/icons/logo_KATRIN/katrin-logo-home-large.gif • http://www-ik.fzk.de/tritium/ • http://www-ik.fzk.de/tritium/em-design/mace_electrodes.gif • http://www-ik.fzk.de/tritium/spectrometer/Transport-Main-Spectrom4.jpg • http://www-ik.fzk.de/tritium/spectrometer/IMG_0158.jpg • http://www-ik.fzk.de/tritium/spectrometer/Annegret_DCP_1973.JPG • http://vali.physics.carleton.ca/~watson/Physics/Gifs/Modern_Physics/Beta_decay_spectrum.gif

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