Deuteron photodisintegration
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The  experiment measured the differential cross section for the g d -> p n reaction in the region of small momentum transfers and over the energy range from 0.5 to 3.2 GeV, in order to check the predictions of the Regge phenomenology and the Quark Gluon String (QGS) model

The experiment uses the photon tagger and the CLAS detector at Jefferson Lab. This setup allowed to obtain data with reduced uncertainties over a broad kinematical region (data accumulated in angular bins of about 10 degrees and energy bins of 100 MeV).

The experiment runs concurrently with the experiments Studies of kaon photoproduction (E89-045),  Inclusive Eta photoproduction in Nuclei (E93-008) and Photoproduction of Eta and Eta' mesons from Deuterium. In addition, 70 hours have been assigned specifically to this experiment for data taking at low photon energy to overlap with existing data on deuteron photodisintegration from other laboratories.

Additional Information

Running conditions

  • current intensity:10-13 nA;
  • Photon energy: 0.5 -> 2.4 GeV;
  • Target: Cilyndrical with length 10 cm and radius2 cm (liquid deuterium);
  • First level trigger: [1 charged hit ] (80%) OR [ 2 neutral hits in opposite sectors](20%);
  • Second level trigger: cleans up the events in which the track do not corresponds to a TOF hit in that sector

  • Complete Angular Distribution Measurements of Two-Body Deuteron Photodisintegration between 0.5 and 3 GeV
PRC 70 (2004) 014005
  • Onset of asymptotic scaling in deuteron photodisintegration
PRL 94 (2005) 012301