RICCO , Giovanni

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The Bloom-Gilman local duality of the inelastic structure function of the proton, the deuteron, and light complex nuclei is investigated using available experimental data in the squared four-momentum transfer range from 0.3 to 5 (GeV/c)2. The results of our analysis suggest that the onset of the Bloom-Gilman local duality is anticipated in...

The neutron multiplication factor k-eff is a key quantity to characterize subcritical neutron multiplying devices and for understanting their physical behaviour, being related to the fundamental eigenvalue of Boltzmann transport equation. Both the maximum available power-and all quantities related to it, like, e.g. the effectiveness in burning...

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Differential capture View the MathML source and View the MathML source cross sections have been measured at excitation energies between 17 and 41 MeV in 17F and 26 and 39 MeV in 17O at several angles in the 35°–135° interval. The (p, γo) data show, besides a direct capture term, the excitation of giant dipole resonances based on excited states...

Differential capture 12C(p, γ)13N and 11B(d, γ)13C cross sections have been measured in the excitation energy region between 20 and 45 MeV in 13N and 25 and 42 MeV in 13C. Angular distributions are given for the pγ channel at each energy, while the dγ excitation function has been measured at 60°. The pγ0 data show, besides a direct capture...

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In this work we report initial studies on a low power Accelerator-Driven System as a possible experimental facility for the measurement of relevant integral nuclear quantities. In particular, we performed Monte Carlo simulations of minor actinides and fission products irradiation and estimated the fission rate within fission chambers in the...

We describe an event generator that reproduces the photon-nucleon interaction from the pion threshold up to 4 GeV accounting to a large extent for the total photoabsorption cross section. Many reaction channels on the nucleon have been considered: namely single pion production, eta production, multipion production and some hyperon production...

An anticoincidence, high-efficiency, BGO gamma spectrometer, designed for energies in the range 10–100 MeV, is presented. The detector performances, measured with photons produced in several capture reactions, are reported and compared with the predictions of a Monte Carlo code, and with performances of a NaI spectrometer of very similar design.

The2H(d, gamma)4He differential cross section was measured at deuteron laboratory energies of 20, 24, and 28 MeV between thetacm=45° and thetacm=135°. AtE d =28 MeV a complete angular distribution was determined and fitted with Legendre polynomials. The ratioR=dsgr/dOHgr (thetacm=90°)/dsgr/dOHgr (thetacm=135°) was measured for each deuteron energy.

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The effects of internal targets on the beam accumulated in electron storage rings are studied with a linear stochastic model which describes the beam emittance and the beam phase-space growth and provides simple formulae for the longitudinal and transverse beam emittance. The description of facilities with and without beam damping is carried...

We present the study of a lucite light guide system developed for the modules of the electromagnetic calorimeter that will be installed in CLAS at CEBAF to detect showering particles emitted at angles larger than 45°. We show that it is possible to produce lucite guides with length up to 120 cm and to adapt them to the module geometry with low...

The argon cluster beam, with a maximum thickness of 1.5 × 1014 atoms/cm2, installed at Frascation the ADONE storage ring, is described. The cluster beam works at room temperature and is used as radiator to produce an intense tagged photon beam with energy up to 1.2 GeV. The argon bea, properties were measured using electrons stored in ADONE;...

The behaviour of plastic scintillator bars with length up to 450 cm, designed for the CLAS large angle electromagnetic shower calorimeter, is considered in relation to the overall calorimeter response function. In particular methods adopted to measure the light emission yield and transmission efficiency are described and the influence of the...