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Title: Gammasphere  
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Subject: Spectrometers, Canadian Penning Trap Mass Spectrometer, Argonne National Laboratory, International Nuclear Safety Center
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Gammasphere gamma ray spectrometer at Argonne National Laboratory
Another angle of the Gammasphere

The Gammasphere is a third generation gamma ray spectrometer used to study rare and exotic nuclear physics. It consists of 108 Compton-suppressed large volume, high-purity germanium detectors arranged in a spherical shell.[1]

Gammasphere has been used to perform a variety of experiments in nuclear physics. Most experiments involve using heavy ion nuclear fusion to form a highly excited atomic nucleus. This nucleus may then emit protons, neutrons, or alpha particles followed by a shower of tens of gamma rays. Gammasphere is used to measure properties of these gamma-rays for tens of millions of such gamma ray showers. The resultant data is analyzed to gain a deeper understanding of the properties of nuclei.

Gammasphere was built in the early 1990s and has operated at the 88-inch cyclotron at Berkeley National Laboratory and at Argonne National Laboratory.

In the movie Hulk Bruce Banner is zapped by a machine called Gammasphere. The actual Gammasphere, which detects rather than emits gamma rays, was used as a model for the device shown in the movie.[2]

See also


  1. ^ [3], Gammasphere Online Booklet
  2. ^ [4], ScienceDaily: Gammasphere Featured In New 'Hulk' Movie

External links

  • LBNL: LBL site.
  • ANL site
  • Gammasphere Online Booklet Homepage
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