5 results on '"E.Fioretto"'
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2. Multimodal Fission in Heavy-Ion Induced Reactions
- Author
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N. A. Kondratiev, Neil Rowley, I. V. Pokrovskiy, J. M. Iitkis, Francis Hanappe, Louise Stuttge, M. G. Iitkis, E. M. Kozulin, Ch. Schmitt, O. Dorvaux, V. Kinnard, A. A. Bogachev, Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), L.Corradi, D.Ackermann, E.Fioretto, A.Gadea, F.Haas, G.Pollarolo, F.Scarlassara, S.Szilner, and M.Trotta
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Cold fission ,Cluster decay ,Proton ,nuclei with mass number 220 or higher ,Chemistry ,Fission ,Neutron emission ,Nuclear Theory ,020206 networking & telecommunications ,02 engineering and technology ,Fission product yield ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,7. Clean energy ,25.70.Jj, 27.90.+b ,thorium ,Nuclear physics ,fission of plutonium ,0202 electrical engineering, electronic engineering, information engineering ,Physics::Atomic and Molecular Clusters ,heavy ion-nucleus reactions ,020201 artificial intelligence & image processing ,Neutron ,Nuclear Experiment ,Excitation ,protactinium - Abstract
Mass, energy and folding angle distributions of the fission fragments as well as multiplicities of neutron and gamma‐quanta emissions accompanying the fission process were measured for fission of 226Th, 227Pa and 234Pu compound nuclei produced in reactions with 18O and 26Mg projectiles over a wide energy range. Data were analyzed with respect to the presence of fission modes. Asymmetric fission was observed even at very high initial excitation for all the measured systems. The so‐called fission mode S1 (caused by the proton shell Z∼50 and neutron shell N∼82 in heavy fragment) was found to be dominant in asymmetric fission of 234Pu. Reactions with not full linear momentum transfer were observed in the folding spectra for all the measured systems.
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- 2006
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3. Nature and decay of a $J\pi$=$36^{+}$ resonance in the $^{24}$Mg + $^{24}$Mg reaction
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A. Latina, S. M. Lenzi, Z. M. Wang, R. Chapman, S. Beghini, C. Beck, X. Liang, M. D. Salsac, E. Farnea, G. Pollarolo, D. G. Jenkins, D. R. Napoli, L. Corradi, Alejandro Algora, Zsolt Dombrádi, Suzana Szilner, A. Gadea, Fernando Scarlassara, B. R. Behera, F. Haas, N. Marginean, Michèle Rousseau, I. Pokrovski, A. M. Stefanini, M. Trotta, S. Courtin, G. Montagnoli, P. Papka, A. Sanchez i Zafra, E. Fioretto, Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), L.Corradi, D.Ackermann, E.Fioretto, A.Gadea, F.Haas, G.Pollarolo, F.Scarlassara, S.Szilner, M.Trotta, Coradi, L., and Szilner, S.
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nuclei with mass number 20 to 38 ,Chemistry ,nuclear resonances ,Resonance ,020206 networking & telecommunications ,02 engineering and technology ,magnesium ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Coincidence ,nuclear reactions and scattering ,Off resonance ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,Atomic physics ,molecular-resonant states ,hyperdeformed molecular state ,fragment- coincidence measurements ,PRISMA-CLARA array ,25.70.Ef, 27.30.+t ,Ground state ,Spin (physics) ,Nuclear Experiment ,Radioactive decay - Abstract
It has been proposed to associate the narrow (\Gamma=170 keV) and high spin ($J\pi$=36^+) resonance in the 24Mg + 24Mg reaction at E_c.m= 45.7 MeV with a hyperdeformed molecular state in 48Cr. Such a description has important consequences for the resonance decay into the favoured inelastic channels. Through fragment- coincidence measurements performed ON and OFF resonance using the PRISMA-CLARA array, we have established that the 24Mg states selectively populated are the 2^+ and 4^+ members of the ground state band.
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- 2006
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4. Nuclear spectroscopy study of the isotopes populated via multinucleon transfer in the 90Zr + 208Pb reaction
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A. M. Stefanini, E. Farnea, F. Haas, S. Szilner, L. Corradi, F. Scarlassara, A. Latina, B. R. Behera, A. Gadea, G. Pollarolo, S. Beghini, C. A. Ur, G. Montagnoli, E. Fioretto, N. Marginean, Corradi, L., Szilner, S., Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), L.Corradi, D.Ackermann, E.Fioretto, A.Gadea, F.Haas, G.Pollarolo, F.Scarlassara, S.Szilner, and M.Trotta
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nuclei with mass number 90 to 149 ,spectroscopy ,Population ,multinucleon transfer reactions ,Zirconium isotopes ,GRAZING code ,zirconium ,Coulomb barrier ,nuclei with mass number 190 to 219 ,02 engineering and technology ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Kinetic energy ,7. Clean energy ,25.70.Hi, 27.60.+j, 27.80.+w, 29.30.-h ,nucleons ,0202 electrical engineering, electronic engineering, information engineering ,Nuclear Experiment ,education ,Open shell ,lead ,education.field_of_study ,Chemistry ,020206 networking & telecommunications ,Excited state ,heavy ion-nucleus reactions ,Isotopes of zirconium ,020201 artificial intelligence & image processing ,Atomic physics ,Nucleon ,Excitation - Abstract
The present work takes advantage of the multinucleon transfer mechanism between heavy reaction partners to study the population pattern of excited nuclear states in near spherical Zirconium isotopes following the 90Zr + 208Pb reaction at an energy closed to the Coulomb barrier. Both the projectile and the target are well known closed shell nuclei offering an optimum situation for clean experimental and theoretical conditions. Total kinetic energy loss (TKEL) distributions were compared with calculations performed with the GRAZING code. The ability to use the TKEL as a selection tool for the states at different excitation energies was shown.
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- 2006
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5. The spectroscopy of neutron-rich sdf-shell nuclei using the CLARA-PRISMA setup
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A. Latina, S. Beghini, G. de Angelis, D. Curien, Zs. Dombrádi, D. Verney, M. Stanoiu, D. R. Napoli, A. Hodsdon, M. Trotta, E. Fioretto, K. Keyes, F. Haas, G. Pollarolo, L. Berti, J. Ollier, F. Ibrahim, Alick Deacon, F. Azaiez, A. Jungclaus, V. F. E. Pucknell, A. Papenberg, D. Bazzacco, J. F. Smith, G. Montagnoli, B. R. Behera, J. Wrzesiński, A. M. Stefanini, R. Chapman, E. Farnea, Fernando Scarlassara, K. M. Spohr, N. Margineau, L. Corradi, N. Toniolo, Roberto Menegazzo, F. Nowacki, Z. M. Wang, M. Burns, X. Liang, M.-D. Salsac, A. Gadea, E. Caurier, Suzana Szilner, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), L.Corradi, D.Ackermann, E.Fioretto, A.Gadea, F.Haas, G.Pollarolo, F.Scarlassara, S.Szilner, M.Trotta, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Corradi, L. et al. ..., Szilner, S.
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spectroscopy ,Spin states ,Nuclear Theory ,02 engineering and technology ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,21.60.Cs, 27.30.+t, 25.70.Lm, 29.30.-h ,Nuclear physics ,0202 electrical engineering, electronic engineering, information engineering ,Gamma spectroscopy ,Neutron ,phosphorus ,Spectroscopy ,Nuclear Experiment ,Physics ,neutron-rich N=20 and 28 nuclei ,spectroscopy of ^36Si ,^37P ,deep-inelastic processes ,nuclei with mass number 20 to 38 ,Projectile ,deep inelastic heavy ion reactions ,Nuclear shell model ,neutrons ,silicon ,020206 networking & telecommunications ,Deep inelastic scattering ,Neutron spectroscopy ,nuclear shell model ,020201 artificial intelligence & image processing ,Atomic physics - Abstract
Since the discovery of the breakdown of shell effects in very neutron-rich N=20 and 28 nuclei, studies of the properties of nuclei far from stability have been of intense interest since they provide a unique opportunity to increase our understanding of nuclear interactions in extreme conditions and often challenge our theoretical models. Deep-inelastic processes can be used to populated high spin states of neutron-rich nuclei. In the deep-inelastic processes, an equilibration in N/Z between the target and projectile nuclei is achieved. For most heavy neutron-rich target nuclei, the N/Z ratio is 1.5 - 1.6, while for the possible neutron-rich sdf-shell projectile it is about 1.2. Thus by using deep-inelastic processes one can populate neutron-rich nuclei around N=20 and N=28. New results for the spectroscopy of neutron-rich N=22 ^36Si and ^37P are presented here.
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