Response of a 7.6 cm × 7.6 cm bismuth germanate spectrometer for solar gamma ray observations

Details Response of a 7.6 cm × 7.6 cm bismuth germanate spectrometer for solar gamma ray observations Response of a 7.6 cm × 7.6 cm bismuth germanate spectrometer for solar gamma ray observations

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986nimpa.245..191y&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 245, Issue 1, p. 191-198.

Physics

6

Scientific paper

The response of a 7.6 cm diameter × 7.6 cm long bismuth germanate (BGO) scintillator to gamma rays from 0.511 to 17.23 MeV has been measured. The full energy peak efficiency of the BGO scintillator is 0.90 at 0.511 MeV, 0.40 at 3.08 MeV and 0.33 at 4.95 MeV. The total peak (full energy + single escape + double escape) efficiency is 0.45 at 10.76 MeV and 0.40 at 17.23 MeV. The energy resolution (fwhm) as a function of gamma-ray energy is approximated by 3.89E0.48 (keV) for energies below 5 MeV. This is about twice that of a NaI scintillator of the same size. The present results indicate that the BGO spectrometer has attractive properties for solar gamma-ray observations.

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