GRETA: A new concept for Gamma-Ray Spectroscopy

Details GRETA: A new concept for Gamma-Ray Spectroscopy GRETA: A new concept for Gamma-Ray Spectroscopy

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..529..364v&link_type=abstract

CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS: 10th International Symposium. AIP Conference Proceedings, Volume 529, pp. 36

Physics

Nuclear Physics

1

X- And Gamma-Ray Spectroscopy, Tracking And Position-Sensitive Detectors

Scientific paper

Gamma-ray tracking is a new concept for the detection of γ radiation. One proposed implementation of this concept, called GRETA for Gamma Ray Energy Tracking Array, aims at an improvement in nuclear physics and is based on an array of highly segmented HPGe detectors. We have developed new techniques to determine three-dimensional positions and energies of interactions based on pulse-shape analysis in a two-dimensionally segmented Ge detector and algorithms which use these informations to reconstruct the scattering sequence of γ rays, even if many γ rays hit the array at the same time. Such a detector will have a high efficiency and a good peak-to-background ratio, an excellent Doppler-shift correction and high count rate capability, as well as a high polarization sensitivity. However, the concept will not only improve the sensitivity for γ rays in nuclear physics but large potential gain is also possible in other areas, such as γ-ray imaging used in astrophysics or medicine. Recent progress indicates that this type of detector system appears to be feasible for an efficient γ-ray tracking device and would have a large impact on a wide variety of physics. .

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