Detector

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there are many types of detectors developed. now is mostly electronic and able to collect huge amount of data.

there are 3 main principles on particle detection.

  1. by the ionization between particle and gas
  2. by the excitation of energy level
  3. by the detection of photon

There are 5 main categories:

  1. Scintillator – small time resolution but only rough spatial resolution
  2. Gaseous counter/wire chamber – small spatial resolution, combine with magnetic field can measure momentum
  3. Semiconductor counter – good energy and spatial resolution
  4. Cherenkov counter – particle identification by transition radiation
  5. Calorimeter – total energy at very high energy.
i will talk more about them when i feel i understand. :)

here is a diagram from WIKI, which summarized

terminology

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this part is for people who confess and poor in english :P

  • Nucleus : (noun) is the core of element, which contain protons and neutrons
  • Nuclei : (noun) many of nucleus
  • Nuclear : (adj) to relate something to nucleus. e.g. nuclear energy, nuclear plant, nuclear phsyics
  • Nucleon: (noun) is the thing make the nucleus, which is a single word. a nucleon can be a proton or neutron
  • Nuclide: ( noun) [from google translate : A distinct kind of atom or nucleus characterized by a specific number of protons and neutrons ] (what??)
  • Nuke: (noun?) (adj?) it is generally used for bomb.