On the Cosmic-ray Rejection Near a Radioactive Beam

The problem of cosmic-ray rejection in low counting rate experiments involving a radioactive nuclear beam is considered. Two possible solutions, i.e. the use of plexiglas and silica aerogel as Cherenkov radiators, are presented

Spectrum Unfolding in High-energy Gamma-ray Detection With Scintillation Detectors

An unfolding (deconvolution) method is presented to analyse high-energy gamma-spectra of scintillation detectors. Different approaches for the apparatus response function have been tested, mainly based on the GEANT3 Monte Carlo code (CERN). A new regularisation functional has been suggested for the unfolding procedure, and a new method is suggested to render the problem more regular. The applicability of the method is tested by unfolding experimental spectra taken with a 4 in. x 4 in. cylindrical bismuth-germanate (EGO) detector, which was used to measure the 4.44, 10.67, 12.71 and 15.11 MeV gamma-rays generated in the C-12(p, p', gamma)C-12 reaction induced by 21 MeV protons. Reaction cross sections are also determined for these gamma-transitions

Radioactive Beam Investigation of the N-13(p,Gamma)o-14 Reaction and the Hot Cno Cycle

The results of a complete set of experiments dealing with the (N(p, gamma)O)-N-13-O-14 reaction and using N-13 radioactive beams are reported. Their astrophysical implications are related to the stellar conditions under which the cold and hot CNO cycles can develop

Investigation of the /sup 13/N(/b p/, gamma )/sup 14/O reaction using /sup 13/N radioactive ion beams

Intense /sup 13/N radioactive ion beams have been produced by the two-accelerator method. They have been used to investigate the /sup 13/N(/b p/, gamma )/sup 14/O reaction, in particular to measure directly its cross section in the energy region of interest in nuclear astrophysics. The results of a complete set of experiments thereby carried out on this reaction allowed the determining of the stellar conditions under which the cold and hot CNO cycles, for the nuclear `burning' of hydrogen and its transformation into helium, dominate.Anglai

Measurement of the 13N + 12,13C elastic scatterings

info:eu-repo/semantics/publishedNucleus-Nucleus Collisions, Taormina, Italy, 30 May - 4 June 1994, edited by Massimo Di Toro, Emilio Migneco and Paolo Piattell

Investigation of the N-13 (p, gamma) O-14 reaction using N-13 radioactive ion beams

Intense N13 radioactive ion beams have been produced by the two-accelerator method. They have been used to investigate the N13(p,)14O reaction, in particular to measure directly its cross section in the energy region of interest in nuclear astrophysics. The results of a complete set of experiments thereby carried out on this reaction allowed the determining of the stellar conditions under which the cold and hot CNO cycles, for the nuclear burning of hydrogen and its transformation into helium, dominate. © 1993 The American Physical Society.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Study of the N-13(d,N) O-14 Reaction Cross-section and its Astrophysical Implications for the N-13 Proton Capture Reaction

The total cross section for the N-13(d, n)O-14g.s. reaction has been measured with N-13 radioactive beams at laboratory energies of 8.2, 12.0, 16.2, and 28.5 MeV. A spectroscopic factor of 0.9 is obtained from a distorted-wave Born approximation analysis of this transfer reaction. The astrophysical S factor for the N-13(p,gamma)O-14 reaction is calculated using the experimentally known resonance parameters for the resonant contribution and the direct-capture model with the experimental spectroscopic factor for the non-resonant contribution