Simulation of particle interactions in NaI

The total photoabsorption cross section for 7Li, C, Al, Cu, Sn, Pb has been measured in the energy range 300–1200 MeV at Frascati with the jet-target tagged photon beam. A 4π NaI crystal detector and a lead-glass shower counter were used, respectively, to measure hadronic events and to reject the electromagnetic background. Data above 600 MeV clearly indicate a broadening of higher nucleon resonance peaks in nuclei and a reduction of the absolute value of the cross section per nucleon with respect to the free-nucleon case. This large broadening suggests a strong influence of the nuclear medium in the resonance propagation and interaction, while the systematic reduction of the measured cross sections might be due to a depletion of the resonance excitation strength and to the onset of the shadowing effect around 1 GeV. Moreover, our systematic study indicates that also the Δ-resonance excitation parameters are not the same for all nuclei, being its mass and width increasing with the nuclear density

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Simulation of particle interactions in NaI

Abstract: Some modifications are introduced in the GEANT3 code to treat hadron interactions in NaI detectors below 1 GeV. A comparison with a few experimental spectra is shown

Cited by 2 publications

References 15 publications

Absolute total photoabsorption cross sections on nuclei in the nucleon resonance region

Absolute total photoabsorption cross sections on nuclei in the nucleon resonance region

Total hadronic photoabsorption cross section on nuclei in the nucleon resonance region

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