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Daniel R. Napoli

napoli@lnl.infn.it

Journal articles

2007
2006
2005
2004
 
DOI 
C Beck, A Sanchez i Zafra, F Haas, P Papka, V Rauch, M Rousseau, F Azaiez, P Bednarczyk, D Curien, O Dorvaux, A Nourreddine, J Robin, W von Oertzen, B Gebauer, Ts Kokalova, S Thummerer, G De Angelis, A Gadea, S Lenzi, D R Napoli, S Szilner, W N Catford, D Jenkins (2004)  Search for 12C + 12C molecule in 24Mg* populated by 24Mg + 12C   Nuclear Physics A: 734. 453-456 August 2005  
Abstract: The γ-decay properties of 24Mg excited states are investigated in the inverse reaction24Mg+12C at Elab(24Mg) = 130 MeV. At this energy the direct inelastic scattering populates a24Mg* energy region where12C+12C breakup resonances can occur. Very exclusive data were collected with the Binary Reaction Spectrometer (BRS) in coincidence with EUROBALL installed at the VIVITRON Tandem facility of the IReS at Strasbourg. The experimental detection system is described and preliminary results of binary reaction coincidence data are presented.
Notes: Presented at 8th International Conference on Nucleus-Nucleus Collisions, Moscow, Russia, 17-21 Jun 2003; Preprint IRES-03-013; nucl-ex/0309007
 
DOI 
A Gadea, D R Napoli, G de Angelis, R Menegazzo, A M Stefanini, L Corradi, M Axiotis, L Berti, E Fioretto, T Kroell, A Latina, N Marginean, G Maron, T Martinez, D Rosso, C Rusu, N Toniolo, S Szilner, M Trotta, D Bazzacco, S Beghini, M Bellato, F Brandolini, E Farnea, R Isocrate, S M Lenzi, S Lunardi, G Montagnoli, P Pavan, C Rossi Alvarez, F Scarlassara, C Ur, N Blasi, A Bracco, F Camera, S Leoni, B Million, M Pignanelli, G Pollarolo, A DeRosa, G Inglima, M La Commara, G La Rana, D Pierroutsakou, M Romoli, M Sandoli, P G Bizzeti, A M Bizzeti-Sona, G Lo Bianco, C M Petrache, A Zucchiatti, P Cocconi, B Quintana, Ch Beck, D Curien, G Duchêne, F Haas, P Medina, P Papka, J Durell, S J Freeman, A Smith, B Varley, K Fayz, V Pucknell, J Simpson, W Gelletly, P Regan, the EUROBALL Collaboration, the PRISMA-2 Collaboration (2004)  Coupling a CLOVER detector array with the PRISMA magnetic spectrometer- Investigation of moderately neutron-rich nuclei populated by multinucleon transfer and deep inelastic collisions   Eur. Phys. J. A: 24. 193-197 April  
Abstract: Following the commissioning of the PRISMA large-acceptance spectrometer, installed at the Laboratori Nazionali di Legnaro (LNL), an international nuclear-structure collaboration has started to develop a large $gamma$-ray setup to be installed in the target position of the spectrometer. The array is based on the EUROBALL composite CLOVER detectors. In this contribution the CLOVER detector array is described and its expected performance figures discussed. This new setup, by using the high-intensity heavy-ion beams provided by the LNL ALPI linac, will push the study of nuclear structure towards moderately neutron-rich nuclei by means of quasi-elastic and deep inelastic reactions.
Notes: Conference on Nuclear Structure with Large gamma-arrays: Status and Perspectives
2003
2002
2001
 
DOI 
S Thummerer, W von Oertzen, B Gebauer, S M Lenzi, A Gadea, D R Napoli, C Beck, M Rousseau (2001)  The Population of Deformed Bands in 45Cr by Emission of 8Be from the 32S + 24Mg Reaction   J. Phys. (London) G: 27. 1405 February 2001  
Abstract: Using particle-γ coincidences we have studied the population of final states after the emission of two α-particles and of 8Be in nuclei formed in 32S + 24Mg reactions at an energy of EL(32S) = 130 MeV. The data were obtained in a set-up consisting of the GASP γ-ray detection array and the multidetector array ISIS. Particle identification is obtained from the ΔE and E signals of the ISIS silicon detector telescopes, with the 8Be being identified by the instantaneous `pile up' of the ΔE and E pulses. γ-ray decays of the 48Cr nucleus are identified with coincidences set on two α-particles and on 8Be. Some transitions of the side-band with Kπ = 4- show a stronger population for 8Be emission relative to that of two α-particles (by a factor of 1.5-1.8). This observation is interpreted as being due to enhanced emission of 8Be into a more deformed nucleus. Calculations based on the extended Hauser-Feshbach compound decay formalism confirm this observation quantitatively.
Notes: NUCLEAR REACTIONS 24Mg(32S, 2α), (32S, 8Be), E=130 MeV; measured Eγ, Iγ, (particle)γ-coin; deduced enhanced population of excited band with cluster emission. GASP, ISIS arrays. Comparison with Hauser-Feshbach calculations ; nucl-ex/0103014 (2001) ; Preprint IReS 01-05
2000
 
DOI 
S Thummerer, B Gebauer, H G Bohlen, W von Oertzen, D Bazzacco, S M Lenzi, A Algora, G de Angelis, A Gadea, D R Napoli, C Borcan, F Donau, L Kaubler, H Schnare, R Schwengner, I Peter, C Beck, C Bhattacharya, M Rousseau, R Nouicer, J Lisle (2000)  Spectroscopy of 44, 46Ti with the Binary Reaction Spectrometer and EUROBALL   Phys. Scr. T: 88. 114  
Abstract: A first experiment was performed with the Binary Reaction trigger Spectrometer (BRS) for Euroball, as second last experiment of phase III. The reaction 24Mg(32S, 56Ni*) at E = 163.5 MeV was chosen in order to populate a specific hyperdeformed resonance state in the compound nucleus 56Ni* at E* = 84 MeV (Jπ = 46+) and to investigate the spectroscopy of its binary descendents. The experimental setup combined the γ-detector array Euroball III, without the phase I Ge detectors, the two large-area gas detector telescopes of the BRS at forward angles and 31 of the 40 detectors of the 4π silicon ball EUROSiB (now called ROSiB) at backward angles. We report on results of binary reaction triggers collected with one BRS telescope. Binary events are separated from evaporation residues due to (i) the large laboratory scattering angles of the detected reaction fragments, the opening angle of the BRS telescope being θ = 12 ° – 46 °, and (ii) by means of particle identification in the telescope. In this paper channels with emission of 8Be plus two protons and of 12C will be discussed.
Notes: NUCLEAR REACTIONS 24Mg(32S, X), E=163.5 MeV; measured Eγ, Iγ, γγ-, (fragment)γ-coin following compound nucleus binary decay. 44,46Ti deduced transitions. Euroball array, binary reaction trigger spectrometer.
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Conference papers

2006
 
DOI 
M -D Salsac, F Haas, S Courtin, C Beck, M Rousseau, A Sanchez I Zafra, A Algora, S Beghini, B R Behera, R Chapman, L Corradi, Z Dombradi, E Farnea, E Fioretto, A Gadea, D G Jenkins, A Latina, S Lenzi, X Liang, N Marginean, G Montagnoli, D Napoli, P Papka, I Pokrovski, G Pollarolo, F Scarlassara, A M Stefanini, S Szilner, M Trotta, Z M Wang (2006)  Nature and decay of a Jpi=36+ resonance in the 24Mg + 24Mg reaction   In: FUSION06: Reaction Mechanisms and Nuclear Structure at the Coulomb Barrier Edited by:AIP Conference Proceedings -- August 14, 2006 -- Volume 853. pp. 165-170 American Institute of Physics  
Abstract: It has been proposed to associate the narrow (Gamma=170 keV) and high spin (Jpi=36+) resonance in the 24Mg + 24Mg reaction at Ec.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-gamma 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. ©2006 American Institute of Physics
Notes: Resonances in heavy-ion reactions; magnesium; nuclei with mass number 20 to 38; nuclear reactions and scattering
2005
 
DOI 
M -D Salsac, F Haas, S Courtin, C Beck, M Rousseau, A Sanchez I Zafra, A Algora, S Beghini, B R Behera, R Chapman, L Corradi, Z Dombradi, E Farnea, E Fioretto, A Gadea, D G Jenkins, A Latina, S Lenzi, X Liang, N Marginean, G Montagnoli, D Napoli, P Papka, I Pokrovski, G Pollarolo, F Scarlassara, A M Stefanini, S Szilner, M Trotta, Z M Wang (2005)  Decay of a Jpi=36+ Resonance in the 24Mg + 24Mg Reaction   In: EXOTIC NUCLEAR SYSTEMS: International Symposium on Exotic Nuclear Systems ENS'05 Edited by:AIP Conference Proceedings -- November 21, 2005 -- Volume 802. pp. 291-295 American Institute of Physics  
Abstract: The narrow (Gamma=170 keV) and high spin (Jpi=36+) resonance in the 24Mg + 24Mg reaction at ECM= 45.7 MeV has been associated with a hyperdeformed molecular state in 48Cr. Such a description has important consequences for the resonance decay into the favored inelastic channels. Through fragment-gamma coincidence measurements performed ON and OFF resonance using the PRISMA-CLARA array, we have identified the 24Mg states selectively populated: the 2+ and 4+ members of the ground state band.
Notes: PACS: 25.70.Ef, 27.30.+t, 21.60.Gx
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