S. Valenta

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P. Žugec, ∗ M. Barbagallo, N. Colonna, D. Bosnar, S. Altstadt, J. Andrzejewski, L. Audouin, V. Bécares, F. Bečvář, F. Belloni, E. Berthoumieux, 9 J. Billowes, V. Boccone, M. Brugger, M. Calviani, F. Calviño, D. Cano-Ott, C. Carrapiço, F. Cerutti, E. Chiaveri, 9 M. Chin, G. Cortés, M.A. Cortés-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, N. Dzysiuk, C.(More)
C. Lederer, 2 C. Massimi, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Bécares, F. Bečvář, F. Belloni, E. Berthoumieux, 10 J. Billowes, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calviño, D. Cano-Ott, C. Carrapiço, F. Cerutti, E. Chiaveri, 10 M. Chin, N. Colonna, G. Cortés, M.A. Cortés-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran,(More)
The newly built second experimental area EAR2 of the n_TOF spallation neutron source at CERN allows to perform (n, charged particles) experiments on short-lived highly radioactive targets. This paper describes a detection apparatus and the experimental procedure for the determination of the cross-section of the Be(n,α)α reaction, which represents one of the(More)
E. Chiaveri, M. Calviani, V. Vlachoudis, C. Weiß, S. Andriamonje, J. Andrzejewski, L. Audouin, V. Avrigeanu, M. Barbagallo, V. Bécares, F. Bečvář, F. Belloni, E. Berthoumieux, J. Billowes, V. Boccone, M. Brugger, F. Calviño, D. Cano-Ott, C. Carrapiço, F. Cerutti, M. Chin, N. Colonna, G. Cortés, M.A. Cortés-Giraldo, M. Diakaki, I. Dillmann, C. Domingo-Pardo,(More)
The energy-dependent cross section of the ^{7}Be(n,α)^{4}He reaction, of interest for the so-called cosmological lithium problem in big bang nucleosynthesis, has been measured for the first time from 10 meV to 10 keV neutron energy. The challenges posed by the short half-life of ^{7}Be and by the low reaction cross section have been overcome at n_TOF thanks(More)
Neutron spectroscopy of 26Mg states: Constraining the stellar neutron source 22Ne(α, n)25Mg C. Massimi a,b,∗, S. Altstadt c, J. Andrzejewski d, L. Audouin e, M. Barbagallo f, V. Bécares g, F. Bečvář h, F. Belloni i, E. Berthoumieux i, J. Billowes j, S. Bisterzo k,l, D. Bosnarm, M. Brugger n, M. Calviani n, F. Calviño o, D. Cano-Ott g, C. Carrapiço p, D.M.(More)
Above 1MeV of incident neutron energy the fission fragment angular distribution (FFAD) has generally a strong anisotropic behavior due to the combination of the incident orbital momentum and the intrinsic spin of the fissioning nucleus. This effect has to be taken into account for the efficiency estimation of devices used for fission cross section(More)
The study of neutron-induced reactions is of high relevance in a wide variety of fields, ranging from stellar nucleosynthesis and fundamental nuclear physics to applications of nuclear technology. In nuclear energy, high accuracy neutron data are needed for the development of Generation IV fast reactors and accelerator driven systems, these last aimed(More)
A fission reaction chamber based on Parallel Plate Avalanche Counters (PPACs) was built for measuring angular distributions of fragments emitted in neutron-induced fission of actinides at the neutron beam available at the Neutron Time-Of-Flight (n_TOF) facility at CERN. The detectors and the samples were tilted 451 with respect to the neutron beam direction(More)