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Planck Collaboration,
P. A. R. Ade,
N. Aghanim,
M. Arnaud,
M. Ashdown,
F. Atrio-Barandela,
J. Aumont,
C. Baccigalupi,
A. Balbi,
A. J. Banday, [......],
B. Van Tent,
P. Vielva,
F. Villa,
N. Vittorio,
L. A. Wade,
B. D. Wandelt,
M. White,
D. Yvon,
A. Zacchei,
A. Zonca
[show abstract]
[hide abstract]
ABSTRACT: Using precise full-sky observations from Planck, and applying several methods
of component separation, we identify and characterize the emission from the
Galactic "haze" at microwave wavelengths. The haze is a distinct component of
diffuse Galactic emission, roughly centered on the Galactic centre, and extends
to |b| ~35 deg in Galactic latitude and |l| ~15 deg in longitude. By combining
the Planck data with observations from the WMAP we are able to determine the
spectrum of this emission to high accuracy, unhindered by the large systematic
biases present in previous analyses. The derived spectrum is consistent with
power-law emission with a spectral index of -2.55 +/- 0.05, thus excluding
free-free emission as the source and instead favouring hard-spectrum
synchrotron radiation from an electron population with a spectrum (number
density per energy) dN/dE ~ E^-2.1. At Galactic latitudes |b|<30 deg, the
microwave haze morphology is consistent with that of the Fermi gamma-ray "haze"
or "bubbles," indicating that we have a multi-wavelength view of a distinct
component of our Galaxy. Given both the very hard spectrum and the extended
nature of the emission, it is highly unlikely that the haze electrons result
from supernova shocks in the Galactic disk. Instead, a new mechanism for
cosmic-ray acceleration in the centre of our Galaxy is implied.
08/2012;
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D. Pierroutsakou,
C. Parascandolo,
R. Silvestri,
C. Agodi,
R. Alba,
V. Baran,
A. Boiano,
M. Colonna,
R. Coniglione,
E. de Filippo, [......],
C. Mazzocchi,
P. Molini,
C. Rizzo,
M. Romoli,
M. Sandoli,
D. Santonocito,
C. Signorini,
F. Soramel,
A. Trifirò,
M. Trimarchi
[show abstract]
[hide abstract]
ABSTRACT: The existence of the dynamical dipole mode in the 192Pb
composite system was investigated through the study of its prompt
γ decay employing the 40Ca + 152Sm and
48Ca + 144Sm reactions at Elab =11 and
10.1 MeV/u, respectively. The γ-rays and light charged particles
were detected in coincidence with evaporation residues and fission
fragments. First results of this experiment show that the dynamical
dipole mode survives in collisions involving heavier mass reaction
partners than those studied previously. As a fast cooling mechanism on
the fusion path, the prompt dipole γ radiation could be of
interest for the synthesis of super-heavy elements through "hot" fusion
reactions. Furthermore, by using radioactive beams and the prompt
γ radiation as a probe we could get information on the symmetry
energy at sub-saturation densities.
09/2011; 17:10006.
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C Di Somma,
A Rivellese,
G Pizza,
L Patti, A De Rosa,
P Cipriano,
V Nedi,
A Rossi,
G Lombardi,
A Colao,
S Savastano
[show abstract]
[hide abstract]
ABSTRACT: Obesity is associated with an altered GH/IGF-I axis status, accounting for the increased cardiovascular risk in obese subjects with GH deficiency. Aim of this randomized, simple-blind, cross-over study was to verify the effectiveness of a short-term treatment with orlistat in reducing non-esterified fatty acid (NEFA) and influencing the endogenous activity of GH/IGF-I axis in obese subjects.
The primary outcome measures were post-prandial lipemia; GH peak after GHRH+arginine; IGF-I; IGF-binding protein (BP)-3, IGF-I/IGFBP-3 ratio. Secondary outcome measures were insulin resistance (IR) indexes (homeostasis model assessment of insulin resistance and Insulin Sensitivity Index).
Twenty obese post-menopausal women (age: 53.6 ± 6.2; body mass index: 34.1 ± 4.0) were randomized to receive normo-caloric diet plus + orlistat (Roche, UK; 120 mg tid) or normo-caloric diet without the additional treatment. The duration of follow-up was 10 days for each treatment period.
Orlistat induced a weight-independent reduction in post-prandial NEFA levels compared with diet alone, with higher GH peak, IGF-I, and IGF-I/IGFBP3 ratio. GH peak was correlated negatively with postprandial NEFA and positively with IGF-I and IGF-I/IGFBP-3 ratio.
Orlistat is effective in inducing a weight-independent higher reduction in post-prandial NEFA levels than dietary treatment alone along with increase in GH peak, IGF-I levels, and IGFI/ IGFBP-3 ratio. These results might add a new potential benefit of orlistat in the management of obese subjects.
Journal of endocrinological investigation 02/2011; 34(2):90-6. · 1.57 Impact Factor
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B. Martin,
D. Pierroutsakou,
G. Inglima,
A. Boiano, A. De Rosa,
M. Di Pietro,
M. La Commara,
M. Romoli,
M. Sandoli,
C. Agodi, [......],
A. Pagano,
N. Pellegriti,
P. Piattelli,
S. Pirrone,
D. Santonocito,
P. Sapienza,
V. Baran,
T. Glodariu,
M. Mazzocco,
C. Signorini
[show abstract]
[hide abstract]
ABSTRACT: We investigated the prompt dipole γ‐ray emission, related with entrance channel charge asymmetry effects, in the 40Ar + 92Zr and 36Ar + 96Zr fusion reactions at Elab= 15 and 16 MeV/nucleon, respectively, with the aim to probe its evolution with incident energy. These reactions populate, through entrance channels having different charge asymmetries, the 132Ce compound nucleus at an average excitation energy of 304 MeV with identical spin distribution. Fusionlike events were selected by detecting high‐energy γ‐rays in coincidence with evaporation residues. By studying the differential γ‐ray multiplicity spectra of the considered reactions, it was shown that the dipole γ‐ray intensity increases by ∼14% for the more charge asymmetric system. This result, associated with those reported for the 32,36S + 100,96Mo reaction pair at lower beam energies, implies a “rise and fall” trend of the prompt dipole γ‐ray emission in the studied beam energy range with a maximum value at 9 MeV/nucleon. © 2006 American Institute of Physics
AIP Conference Proceedings. 04/2006; 831(1):505-507.
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D Pierroutsakou,
B Martin,
G Inglima,
A Boiano, A De Rosa,
M Di Pietro,
M La Commara,
R Mordente,
M Romoli,
M Sandoli,
M Trotta,
E Vardaci,
T Glodariu,
M Mazzocco,
C Signorini,
L Stroe,
V Baran,
M Colonna,
MD Toro,
N Pellegriti
[show abstract]
[hide abstract]
ABSTRACT: We investigated the prompt dipole gamma-ray emission, related with entrance channel charge asymmetry effects, in the S-32+Mo-100 and S-36+Mo-96 fusion reactions at E-lab=196 MeV and 214.2 MeV, respectively, with the aim to probe its evolution with incident energy. These reactions populate, through entrance channels having different charge asymmetries, the Ce-132 compound nucleus at an excitation energy of 117 MeV with identical spin distribution. Fusion events were selected by detecting high-energy gamma rays in coincidence with evaporation residues. The center-of-mass differential gamma-ray multiplicity spectra of the considered reactions were found to be identical within the experimental uncertainties in the whole energy range. This result, associated with that reported for the same reaction pair at higher beam energy where a larger giant dipole resonance yield was evidenced for the more charge asymmetric system, implies an increasing trend of the prompt dipole gamma-ray emission with incident energy. Calculations based on a collective bremsstrahlung analysis of the reaction dynamics are presented and compared with the experimental findings.
Physical Review C 05/2005; 71(5):054605. · 3.31 Impact Factor
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D. Pierroutsakou,
A. Boiano, A. De Rosa,
M. Di Pietro,
G. Inglima,
M. La Commara,
Ruhan Ming,
B. Martin,
R. Mordente,
A. Ordine,
F. Rizzo,
V. Roca,
M. Romoli,
M. Sandoli,
F. Soramel,
L. Stroe,
M. Trotta,
E. Vardaci
[show abstract]
[hide abstract]
ABSTRACT: The 32S + 100Mo and 36S + 96Mo fusionlike reactions were studied at incident energy of E
lab = 298 MeV and 320 MeV, respectively, with the aim of probing the influence of the entrance channel charge asymmetry on the
dipole γ-ray emission. The excitation energy and spin distribution of the compound nucleus created in these reactions were
identical, the only difference being associated with the unequal charge asymmetry of the two entrance channels. High-energy
γ-rays were detected in an array of 9 seven-pack BaF2 clusters. Coincidence with fusionlike residues detected in four PPAC ensured the selection of central reaction events. By
studying the differential γ-ray multiplicity associated with the two reactions it was shown that the dipole strength excited
in the compound nucleus increases with the entrance channel charge asymmetry. From the linearized spectra, the increase of
the GDR γ-ray intensity was found to be ∼ 25% for the more charge asymmetric system. The results are discussed and compared
with those of previous data obtained at different incident energies.
European Physical Journal A 05/2003; 17(1):71-76. · 2.19 Impact Factor
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D. Pierroutsakou,
M. Di Toro,
F. Amorini,
V. Baran,
A. Boiano, A. De Rosa,
A. D'Onofrio,
G. Inglima,
M. La Commara,
A. Ordine,
N. Pellegriti,
F. Rizzo,
V. Roca,
M. Romoli,
M. Sandoli,
M. Trotta,
S. Tudisco
[show abstract]
[hide abstract]
ABSTRACT: We report on the results obtained from the study of the 32S + 64Ni and 32S + 58Ni peripheral reactions at incident energies E
lab = 288 MeV and E
lab = 320 MeV, respectively. High-energy γ-rays were detected in an array of 8 seven-pack BaF2 clusters. Coincidence with complex fragments detected in 12 three-stage telescopes ensured the selection of peripheral reaction
events. All of the relevant reaction parameters were kept constant with the exception of the different initial dipole moment
caused by the different entrance channel charge asymmetry. While for quasi-elastic events no N/Z effect was observed in the differential γ-ray multiplicities of the two reactions, for deep-inelastic events a larger dipole
γ-ray emission occurs during the more N/Z asymmetric reaction. A theoretical interpretation based on a collective Bremsstrahlung analysis of the reaction dynamics
is presented.
European Physical Journal A 02/2003; 16(3):423-435. · 2.19 Impact Factor
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G. Montagnoli,
S. Beghini,
F. Scarlassara,
A. M. Stefanini,
L. Corradi,
M. Trotta,
A. Gadea,
M. Maron,
A. Pisent,
M. Gulmini, A. De Rosa,
G. Inglima,
M. LaCommara,
D. Pierroutsakou,
M. Romoli,
M. Sandoli,
G. Pollarolo,
A. Latina
[show abstract]
[hide abstract]
ABSTRACT: PRISMA is a magnetic spectrometer for heavy ions installed at Laboratori Nazionali di Legnaro (LNL). The most interesting features of the spectrometer are: large solid angle 80 msr, wide momentum acceptance ±10%, mass resolution 1/300 via TOF, energy resolution up to 1/1000 and rotation around the target in a large angular range (−20° ⩽ θ ⩽ 130°). Those performances will be made possible by software reconstruction of the ion tracks using the position, time and energy signals from the entrance and focal-plane detectors. © 2002 American Institute of Physics.
AIP Conference Proceedings. 04/2002; 610(1):942-946.
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D Pierroutsakou,
A Boiano, A De Rosa,
M Di Pietro,
G Inglima,
M La Commara,
A Ordine,
V Roca,
M Romoli,
M Sandoli,
M Trotta,
F Rizzo,
L Stroe
Nuclear Physics A 04/2001; 687(1-2):245C-252C. · 1.54 Impact Factor
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M. Sandoli,
A. Boiano,
L. Campajola, A. De Rosa,
A. D'Onofrio,
G. Inglima,
M. La Commara,
A. Ordine,
D. Pierroutsakou,
V. Roca,
M. Romano,
M. Romoli,
M. Trotta,
F. Rizzo,
F. Amorini,
S. Tudisco
[show abstract]
[hide abstract]
ABSTRACT: We report on the results obtained from the study of the 32S +74Ge deep inelastic reaction at incident energy E= 320 MeV. High-energy γ-rays were detected in an array of 6 seven-pack BaF2 clusters. Coincidence with complex fragments detected in 12 three-stage telescopes ensured the selection of peripheral reaction
events. In order to investigate the pre-equilibrium dipole strength excitation two independent analyses were performed. In
the first analysis the energy spectra of the γ-rays were evaluated in the statistical model framework while in the second
one the γ-ray fragment angular correlation with respect to the nuclear spin vector of the composite system was studied. Both
methods indicate the excitation of dipole strength in the highly deformed dinucleus and provide dipole resonance parameter
sets that are in good agreement with each other.
European Physical Journal A 10/1999; 6(3):275-288. · 2.19 Impact Factor
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M. Sandoli,
L. Campajola, A. De Rosa,
A. D'Onofrio,
G. Inglima,
M. La Commara,
A. Ordine,
D. Pierroutsakou,
V. Roca,
M. Romano,
M. Romoli,
F. Terrasi,
M. Trotta,
G. Cardella,
M. Papa,
G. Pappalardo,
F. Rizzo,
N. Alamanos,
F. Auger,
A. Gillibert
[show abstract]
[hide abstract]
ABSTRACT: The energy spectra of the g\gamma-rays emitted in the 35^{35}Cl + 92^{92}Mo reaction at incident energy E = 260 MeVE = 260 {\rm MeV} were measured in coincidence with the ejectiles produced in dissipative reaction events. The cumulative energy spectrum of the g\gamma-rays coming from the decay of the ejectiles was calculated within the statistical model and its comparison to the experimental spectrum evidences an excess in the data for Eg = 8E_\gamma = 8 to 12 MeV. Such an excess, fitted with a Lorentz curve, is attributed to the preequilibrium GDR g\gamma-decay of the intermediate dinuclear system. The centroid energy of the Lorentz curve corresponds to a dipole oscillation along the symmetry axis of the system and its width is found to be comparable to that of the ground state GDR low energy component of the deformed dinucleus. The small quantal dispersion Dl = (10.3 ±0.1)(h/2p)\Delta \ell =(10.3 \pm 0.1)\hbar of the entrance channel angular momentum, determined by analysing the dissipative fragment angular distribution in the framework of the Strutinsky model, is suggested to limit the broadening of the preequilibrium GDR width.
Zeitschrift für Physik A Hadrons and Nuclei 01/1997; 357(1):67-74.
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M. Papa,
G. Cardella,
A. Di Pietro,
S. L. Li,
A. Musumarra,
G. Pappalardo,
F. Rizzo, A. De Rosa,
G. Inglima,
M. La Commara,
D. Pierroutsakou,
M. Romoli
[show abstract]
[hide abstract]
ABSTRACT: The properties of the strong fluctuations observed in the excitation functions of Dissipative Binary Heavy Ion Collisions (DBHIC) have been studied for the system28Si+28Si in the energy range 150 MeV E
lab 156 MeV with 150 keV step laboratory incident energy, by angular distributions and excitation functions measurements. Experimental results are compared to the the recently developed Partially Overlapping Molecular Level Model (POMLM). The parameters of the model have been determined with reasonable accuracy by describing all the quantities characterizing the fluctuations in the excitation functions i.e.: Average Angular Distributions, Energy Autocorrelation Functions, Variances, Angular Correlation Coefficients. The results of the analysis strongly support the idea of a process proceeding through the formation of an highly excited nuclear molecule. Experimental data collected at the most forward angles show the effects of strong excitation of a few final channels.
Zeitschrift für Physik A Hadrons and Nuclei 05/1995; 353(2):205-212.
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L. Campajola, A. de Rosa,
A. D'Onofrio,
L. Gialanella,
G. Inglima,
M. La Commara,
A. Ordine,
D. Pierroutsakou,
V. Roca,
M. Romano, [......],
M. Papa,
G. Pappalardo,
F. Rizzo,
J. P. S. van Shagen,
N. Alamanos,
F. Auger,
A. Gillibert,
D. Prosperi,
G. de Angelis,
E. Fioretto
Nuclear Physics A 01/1995; 583:119-121. · 1.54 Impact Factor
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L. Campajola, A. De Rosa,
A. D'Onofrio,
L. Gialanella,
G. Inglima,
M. La Commara,
A. Ordine,
D. Pierroutsakou,
V. Roca,
M. Romano, [......],
G. Pappalardo,
F. Rizzo,
N. Alamanos,
F. Auger,
A. Gillibert,
A. Incicchitti,
D. Prosperi,
G. De Angelis,
E. Fioretto,
R. Bernabei
[show abstract]
[hide abstract]
ABSTRACT: -rays are measured in coincidence with the dissipative complex fragments from the35Cl +64Ni reaction at 7.7 A MeV. Theoretical -ray coincidence spectra are determined through a fitting procedure using the contribution of the excited fragment statistical -decay calculated by means of the CASCADE code. Whereas the expected statistical spectra fit very well the data in the energy regionE
=2 to 8 MeV, above this energy another emission mechanism in addition to the statistical decay has to be considered in order to reproduce the experimental spectra. Simulations based on the Vlasov equation suggest that this emission could come from the decay of dipole strength excited in the intermediate dinuclear system.
Zeitschrift für Physik A Hadrons and Nuclei 01/1995; 352(4):421-425.
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F. Rizzo,
G. Cardella, A. De Rosa,
A. Di Pietro,
A. D'Onofrio,
E. Fioretto,
G. Inglima,
A. Musumarra,
M. Papa,
G. Pappalardo,
M. Romano,
M. Romoli,
F. Terrasi,
M. Sandoli,
G. S. Wang
[show abstract]
[hide abstract]
ABSTRACT: It is shown that the Partially Overlapping Molecular Level Model (POMLM) accounts for the experimental results of the dissipative28Si +48Ti collision around 210 MeV incident energy. The general trend of the properties of the fluctuations as well as the average angular distributions are reproduced by the same set of main parameters. A general consistency is also found between the present data and the data obtained in previous work on the same colliding system performed at lower incident energy (around 123 MeV).
Zeitschrift für Physik A Hadrons and Nuclei 05/1994; 349(2):169-175.
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A. Di Pietro,
G. Cardella,
A. Musumarra,
M. Papa,
G. Pappalardo,
F. Rizzo, A. De Rosa,
A. D'Onofrio,
G. Inglima,
V. Roca,
M. Romano,
M. Romoli,
M. Sandoli,
F. Terrasi,
E. Fioretto
[show abstract]
[hide abstract]
ABSTRACT: The28Si+64Ni reaction at 163.8 MeV incident energy is studied by measuring in coincidence-rays and charged particles identified from Z=2 to Z=16. The transition from quasi-elastic to more damped reactions is observed when the difference between the detected charge and the projectile one is increased. The strong influence of the particle decay on the measured-ray multiplicity is evidenced with the help of the statistical model computer code CASCADE. Dissipative events are well described in the rolling limit with excitation energy equally shared between the fragments. The overall agreement is lost for the fragments with the projectile charge which show a small value of the-multiplicity even for dissipative events. This is probably connected with the previously observed non statistical behavior of gamma rays emitted in coincidence with projectile-like fragments. In the alpha-spectrum measured in coincidence with gamma-rays, the deexcitation of fused systems is clearly separated from in flight emission of deep inelastic fragments. The low measured gamma-ray multiplicity for fusion events is qualitatively explained taking into account the effect of alpha-emission in the statistical decay.
Zeitschrift für Physik A Hadrons and Nuclei 01/1994; 350(3):199-205.
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G. Cardella,
M. Papa,
G. Pappalardo,
F. Rizzo,
Q. Wang, A. De Rosa,
E. Fioretto,
G. Inglima,
M. Romoli,
M. Sandoli,
R. Setola,
L. Corradi,
G. Montagnoli,
D. R. Napoli,
A. M. Stefanini
[show abstract]
[hide abstract]
ABSTRACT: Coherence energies extracted from excitation functions and angular distributions for the fragments emitted in the19F+63Cu reaction, measured in the range lab=10 to 120 at incident energies between 100 to 108 MeV (lab.), were compared to the Kun model of dissipative collisions. An overall agreement was found for the angular distributions at forward angles. The general behavior of coherence energies was also properly described and interaction times were deduced.
Zeitschrift für Physik A Hadrons and Nuclei 01/1990; 336(4):387-390.
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[show abstract]
[hide abstract]
ABSTRACT: A recent formulation of the cross section autocorrelation function, specially developed to take into account the angular momentum effects, is compared to the experimental results concerning the28Si +48Ti and28Si +64Ni reactions. The possibility of determining the mean lifetime of the dinucleus excited states populated in dissipative collisions is also discussed.
Zeitschrift für Physik A Hadrons and Nuclei 05/1989; 332(2):195-201.
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G. Cardella,
M. Papa,
G. Pappalardo,
F. Rizzo, A. de Rosa,
G. Inglima,
M. Sandoli,
G. Fortuna,
G. Montagnoli,
A. M. Stefanini,
A. Tivelli,
S. Beghini,
C. Signorini
Nuclear Physics A 04/1988; 482:235-243. · 1.54 Impact Factor
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[show abstract]
[hide abstract]
ABSTRACT: The possible presence of molecular structures in the21Ne composite system has been investigated by means of9Be+12C elastic scattering in the energy rangeE
c.m.=(6.23÷12.06) MeV at θc.m.=127.7°. The SDM analysis of the excitation function has pointed out the existence of intermediate-width statistical fluctuations
of molecular nature together with compound-nucleus fluctuations. The intermediate coherence energies of about 300 keV correspond
to a mean lifetime τ≈2.2·10−21 s for the overlapping molecular states.
L'eventuale presenza di strutture di tipo molecolare nel sistema composto21Ne è stata studiata mediante la diffusione elastica di9Be su12C ad energie comprese tra 6.23 e 12.06 MeV nel centro di massa ad un angolo θc.m.=127.7°. La funzione di eccitazione è stata analizzata utilizzando il metodo della densità spettrale che ha permesso di rilevare
l'esistenza di fluttuazioni statistiche di natura molecolare insieme con fluttuazioni di nucleo composto. Per gli stati molecolari
sovrapposti si hanno energie di coerenza intermedie di circa 300 keV, corrispondenti ad una vita media τ≈2.2·10−21 s.
С помощью упругого рассеяния9Be+12C в области энергийE
c.m.=(6.23÷12.06) МэВ при θc.m.=127.7° исследуется возможное присутствие молекулярных структур в составной системе21Ne. Используя метод спектральной плотности, анализируется функция возбуждения. Результаты анализа указывают на сушествование
статистических флуктуаций молекулярной природы вместе с флуктуациями компаунд-ядер. Промежуточные энергии порядка 300 кэВ
соответствуют среднему времени жизни τ≈2.2·10−21 с для перекрываюшихся молекулярных состояний.
Il Nuovo Cimento A 01/1985; 85(3):269-279.
