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251. Nuclear rotations

Author

A. Bracco, F. Alasia, S. Leoni, E. Vigezz, and R. A. Broglia

Subjects
General Physics and Astronomy
Published
1996

252. Observation of an Intense Quasicontinuum of Superdeformed Rotational Transitions inEu143

Author

A. Atac, S. Leoni, B. Herskind, Thomas Døssing, and M. Piiparinen

Subjects
Physics, education.field_of_study, Population, General Physics and Astronomy, Moment of inertia, Atomic physics, Anisotropy, education, Rotational frequency, Coincidence, Spectral line
Abstract

Quasicontinuum spectra in coincidence with transitions belonging to the different potential wells of {sup 143}Eu are studied with an increasing number of coincidence folds. An intense bump of rotationally correlated transitions is observed to develop in the high spin region. Fold distributions, angular anisotropies, moment of inertia determinations, and lower limits of lifetimes as a function of the rotational frequency show that the bump originates from highly collective rotationally damped {ital E}2 transitions generated by superdeformed states. {copyright} {ital 1996 The American Physical Society.}

Published
1996

253. Fluctuation analysis of rotational spectra

Author

Masayuki Matsuo, B. Herskind, Thomas Døssing, S. Leoni, Enrico Vigezzi, Ricardo A. Broglia, and A. Bracco

Subjects
Physics, Angular momentum, Yrast, Atomic nucleus, General Physics and Astronomy, Rotational transition, Atomic physics, Nucleon, Stationary state, Spectral line, Ansatz
Abstract

It is well established that nucleons in the atomic nucleus can organize their motion, leading to quadrupole deformed shapes of the average field and to rotations of the nucleus as a whole. At an excitation energy of few MeV above the yrast line, rotational bands become very closely spaced in energy. Any single band can be viewed as a collective sequence of related states embedded in a dense background of other (more or less complicated) states, to which it will couple by residual interactions. This coupling leads to stationary states of the system (the compound nucleus) which are complicated mixtures of unperturbed configurations. The rotational degree of freedom is “damped” in these compound states in the sense that the electric quadrupole decay of a single quantum state with angular momentum I will not go to a unique final state with spin I − 2 (as for the unperturbed bands) but will exhibit a spectrum of final states all having spin I − 2. In other words, for each compound nucleus formed in an experiment, the cascade of ∼20 γ -rays, which eventually will cool the system, will find many transitions through which to proceed in the regions where bands mix strongly (damped region) and only few in the region of discrete bands. In actual experiments, the cascade of γ-rays associated with each of the members of the ensemble of compound nuclei will use each of the “discrete” transitions many more times than the “continuum” transitions. Relatively large and small fluctuations in the recorded coincidence spectrum will ensue. respectively. The analysis of the fluctuations will be shown to be instrumental to gain insight into the phenomenon of rotational damping. For this purpose, two- and higher-fold coincidence spectra emitted from rotating nuclei are analyzed with respect to the count fluctuations. The coincidences from consecutive γ-rays emitted from discrete rotational bands generate ridges in the E γ 1 · E γ 2 spectrum, and the fluctuation analysis of the ridges is based upon the ansatz of a random selection of transition energies from band to band. This ansatz is supported by a cranked mean-field calculation for the nucleus 168 Yb, as well as by analyzing resolved bands in 168 Yb and its neighbors. Consecutive γ-rays emitted from the region of rotational damping spread out more in the E γ 1 · E γ 2 plane than those associated with transitions between members of discrete rotational bands, and are studied most clearly in the central valley ( E γ 1 = E γ 2 ). The fluctuation analysis of the valley is based upon the ansatz of fluctuations in the intensity of the transitions of Porter-Thomas type superposed on a smooth spectrum of transition energies. This ansatz is again supported by a mixed-band calculation. The mathematical treatment of count fluctuations is formulated in general terms, and the connection to earlier treatments of one-fold spectra of high level density is established. The statistical assumptions underlying the fluctuation analysis imply the existence of a principal uncertainty, which is examined in detail. In the experimental section, the fluctuation analysis is applied to two-dimensional γ-spectra, the only available data at present with sufficient intensity to warrant a meaningful analysis. Large fluctuations are observed in the ridge structures from the four cases analyzed, showing that only a rather low number (≈ 30) of discrete rotational bands exist. In contrast, only weak fluctuations are found along the central valley, revealing that the spectrum in the valley effectively contains different (of the order of 10 5 ) coincidence combinations. This number is considerably larger than what is found assuming that the rotational decay leads to a unique final state, showing that the transition strength through each decay step is spread over many states within a given energy interval, the damping width, and thus providing fairly direct evidence of the rotational damping picture.

Published
1996

254. Superdeformed triaxial bands in 163,165Lu

Author

Anders Nordlund, P.O. Tjøm, H. Ryde, L.P. Ekström, H. Carlsson, G.B. Hagemann, H. Schnack-Petersen, C.X. Yang, Ragnar Bengtsson, F. Ingebretsen, R.A. Bark, A. Brockstedt, Henrik Jeldtoft Jensen, B. Herskind, S. Leoni, and P. Bosetti

Subjects
Nuclear reaction, Maxima and minima, Physics, Nuclear and High Energy Physics, Proton, Diabatic, Neutron, Atomic physics, Potential energy, Symmetry (physics), Spin-½
Abstract

An experimental investigation of the nucleus 165Lu, using the reactions 138Ba(31P,4n) 165Lu and 150Sm(19F,4n) 165Lu at beam energies of E = 155 and 95 MeV, respectively, has been performed. Among other additions to the existing level scheme, a new band, with transition energies almost identical to a strongly deformed (β2 0.42) πi13/2[660 1/2+] band recently discovered in 163Lu has been established. A theoretical analysis of the structure of the two Lu isotopes, 165Lu and 163Lu is carried out by detailed calculations of total potential energy surfaces for specific configurations. By a diabatic treatment of crossings specific proton configurations as πi13/2[660 1/2+] are identified throughout the deformation space and as a function of spin. It is found as a general feature that well deformed local minima of considerable nonaxial symmetry coexist with a normal deformed global minimum. The depth of these local minima depend on configuration. The structure of the different global and local minima found in these surfaces are analysed and discussed in terms of occupation of available basis configurations and their orientation relative to the rotation axis. The strongly deformed minima are found to belong to a group of superdeformed triaxial structures, expected to appear at low energies for certain favourable combinations of proton and neutron numbers.

Published
1995

255. More than thirty bands in 177Re

Author

P.O. Tjøm, Henrik Jeldtoft Jensen, F. Ingebretsen, Anders Nordlund, J. Wrzesinski, A. Brockstedt, B. Herskind, G.B. Hagemann, P. Bosetti, W. Korten, R.A. Bark, M. Bergström, H. Carlsson, S. Leoni, and H. Ryde

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, education.field_of_study, Yrast, Population, Low frequency, Atomic physics, Spin (physics), education
Abstract

The level scheme of 177Re has been extended extensively, with fragments of more than thirty bands, characterised by a given signature, observed. Alignments at low frequency in one-quasiparticle bands are interpreted as deformation effects and compared with the predictions of cranking calculations. The previously assigned one-quasiparticle π i 13 2 band is shown to be a mixture of three-quasiparticle and vibrational character. The non-observation of the one-quasiparticle π i 13 2 band is explained as being due to crossings of its s-band by competing bands. A number of high-K bands are also reported, including five- and seven-quasiparticle bands. Configuration assignments for these bands are aided by comparing experimental gκ values with “effective” gκ values, calculated with a semi-classical expression taking Coriolis mixing into account. The population of the yrast band was observed to oscillate with every four units of spin.

Published
1995

256. Intruder bands extended inRe175andIr177: Deformation changes and interaction at the alignment ofi13/2neutrons

Author

H. Ryde, R.A. Bark, Ragnar Bengtsson, F. Ingebretsen, J. Wrzesinski, K. Strähle, S. Leoni, S. W. Ødegård, P.O. Tjøm, G.B. Hagemann, Ian Gardner Bearden, T Shizuma, and B. Herskind

Subjects
Physics, Baryon, Nuclear reaction, Nuclear and High Energy Physics, Crystallography, Condensed matter physics, Hadron, Quadrupole, Elementary particle, Fermion, Electronic band structure, Nucleon
Abstract

The {pi}{ital i}{sub 13/2}(1/2{sup +}[660]) and {pi}{ital h}{sub 9/2}(1/2{sup {minus}}[541]) bands of {sup 175}Re and {sup 177}Ir are extended to high spins with the reactions {sup 161}Dy({sup 19}F, 5{ital n}){sup 175}Re and {sup 146}Nd({sup 35}Cl, 4{ital n}){sup 177}Ir. Band crossings are observed which are attributed to the alignment of {ital i}{sub 13/2} neutrons. In the case of the {pi}{ital i}{sub 13/2} bands, a study of the alignments implies a reduction in deformation at the crossing. In {sup 177}Ir the yrare extensions of the one- and three-quasiparticle {pi}{ital i}{sub 13/2} bands are observed for the first time, enabling relative quadrupole moments to be deduced. These support a loss of deformation in the three-quasiparticle {pi}{ital i}{sub 13/2} bands. The interaction between the bands is 77.3 keV. Therefore, up-bends at low frequency in the {pi}{ital i}{sub 13/2} bands are attributed to deformation effects rather than strong interactions.

Published
1995

257. Probing the limits of complete spectroscopy in 164Yb

Author

A. Maj, P.O. Tjøm, A. Brockstedt, J. Nyberg, G.B. Hagemann, Ragnar Bengtsson, J.R. Jongman, H. Ryde, S. Leoni, Y. Sun, Henrik Jeldtoft Jensen, B. Herskind, Anders Nordlund, Peter Ekström, A. Atac, M. Bergström, and H. Carlsson

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Spin states, Spins, Plane (geometry), Yrast, Quasiparticle, Atomic physics, Spectroscopy, Line (formation)
Abstract

High spin states of 164Yb have been populated using the 152Sm(16O,4n) reaction. Analysis has been made using γγ coincidences and, for the first time in a large detector array, angular correlations. The experimental level scheme has been extended to include a total of 15 decay cascades, for some of which the spins have been measured. Extensive cranked shell model calculations have been performed to map the quasiparticle rotational bands in a window, reaching up to 1 MeV above the yrast line, in the spin-energy plane. The experimental data are compared with the calculated bands, and most of the experimental bands are interpreted in terms of quasiparticle excitations. It is also found that the number of experimentally detected bands is in good agreement with the calculated number of bands in the observed spin-energy region.

Published
1995

258. Raja asterias population assessment in FAO GFCM GSA17 area

Author

Anna Nora Tassetti, Gianna Fabi, Giuseppe Scarcella, S. Leoni, Carmen Ferrà, Piero Polidori, and Giulio Pellini

Subjects
0106 biological sciences, 0301 basic medicine, Adriatic Sea, Environmental Engineering, Population, Fishing, Climate change, Distribution, Aquatic Science, Oceanography, 010603 evolutionary biology, 01 natural sciences, lcsh:Aquaculture. Fisheries. Angling, 03 medical and health sciences, Shark fisheries, Abundance, Sexual maturity, education, Relative species abundance, Persistance, Ecology, Evolution, Behavior and Systematics, lcsh:SH1-691, education.field_of_study, biology, Ecology, Asterias, biology.organism_classification, Fishery, Raja asterias, 030104 developmental biology, Sex ratio
Abstract

Population structure and distribution of the starry ray, Raja asterias, were described based on data collected during yearly rapido trawl surveys (SoleMon), between 2005 and 2014 in the Northern and Central Adriatic Sea. A total of 306 individuals were caught, sex ratio was 1.04:1 in favor of males and length-weight relationships were obtained for the whole sample. Following the MEDITS scale, maturity was estimated, observing a higher number of immature individuals. Relative abundance significantly increased during the recent period with the highest values recorded at 5-30 m depths. Such increase could be related to the response of R. asterias to climatic change or to the decrease in fishing pressure in the area. Clear spatial segregation of individuals depending on their life stage was observed, with immature individuals inhabiting the coastal areas and adults more abundant at depths greater than 40 m. The comparison of the result of the present study with MEDITS survey outcomes in terms of distribution patterns, persistence areas of adults and juveniles and abundances indices, evidences that SoleMon survey seems to be more suitable in defining such features of the stock, likely due to the greater catchability of the rapido trawl in respect to the MEDITS trawl net. However, further investigations are needed to identify factors affecting the increasing abundance of this species, and develop an action plan for spatial management of fishing activities.

Published
2016

259. A finite number of regular rotational bands in the superdeformed well of 143Eu

Author

M. Sugawara, K. Strähle, P.O. Tjøm, G. Sletten, S. Leoni, M. Piiparinen, G. V. Marti, Johan Nyberg, Masayuki Matsuo, Kenichi Yoshida, Thomas Døssing, F. Ingebretsen, B. Herskind, H. Schnare, R.M. Lieder, G.B. Hagemann, Henrik Jeldtoft Jensen, N. Nica, A. Atac, and Ari Virtanen

Subjects
Physics, Nuclear and High Energy Physics, Yrast, Nuclear Theory, Rotational energy, medicine.anatomical_structure, Excited state, medicine, Atomic physics, Nuclear Experiment, Finite set, Nucleus, Mixing (physics), Excitation, Line (formation)
Abstract

The number of excited superdeformed bands in 143 Eu is measured by use of the Fluctuation Analysis Method. Between 10 and 40 rotational bands, displaying typical rotational energy correlations over two consecutive transitions, are populated within a rather narrow range in transition energy, E γ ≈ 1300–1500 keV. These numbers are close to the values found for normally deformed nuclei and agree with microscopic cranking + band mixing calculations for the specific superdeformed nucleus, which predict the onset of rotational damping to occur at the excitation energy U 0 = 1.3–1.6 MeV above the yrast line.

Published
1995

260. The distribution of the rotational transition strength in warm nuclei studied through γ-ray correlations

Author

Johan Nyberg, A. Brockstedt, Masayuki Matsuo, Thomas Døssing, P.O. Tjøm, R.M. Lieder, M. Sugawara, S. Frattini, G.B. Hagemann, Peter Ekström, P. Rasmussen, J.R. Jongman, P. Bosetti, F. Ingebretsen, H. Ryde, B. Herskind, D.C. Radford, M. Piiparinen, A. Bracco, Enrico Vigezzi, N. Nica, Benedicte Million, Anders Nordlund, Ari Virtanen, S. Leoni, A. Maj, H.J. Jensen, M. Bergström, H. Carlsson, A. Atac, and T. Lönnroth

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Rotation around a fixed axis, Rotational transition, Rotational temperature, Rotational–vibrational spectroscopy, Atomic physics, Residual, Rotational partition function, Spectral line
Abstract

The study of damping of rotational motion applying te rotational plane mapping (RPM) method is presented and discussed. The aim of this technique is to extract the distribution of the rotational transition strength from an analysis of the shape of the “central valley” of two- and three-dimensional γ-ray spectra. The method is applied to a triple γ-coincidence data set of 162,163Tm nuclei formed in 37Cl+130Te reactions. The rotational transition strength is obtained as a function of rotational frequency for selected regions of entry states, and the width is found to be rather constant and approximately equal to 80 keV. This value is significantly smaller than the value predicted theoretically for the rotational damping width Γrot. Also the ratio between the observed depth and width of both the 2D and 3D valleys does not agree with the simple model adopted in the RPM method. These discrepancies point to the presence of both a wide and a narrow component in the distribution of rotational strength as extracted by the RPM method. The analysis of simulated spectra obtained on the basis of realistic band-mixing calculations, including residual interactions, confirms this behaviour.

Published
1995

261. Rotation of warm nuclei and superdeformation

Author

A. Lopez-Martens, S. Leoni, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM SNO), and Université Paris-Saclay-Univ. Paris-Sud-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Field (physics), TRANSITION STRENGTH, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Rotation, 01 natural sciences, COINCIDENCE DATA, Nuclear physics, Superdeformation, ENERGY-LEVELS, 0103 physical sciences, HIGH-SPIN STATES, 010306 general physics, Spin (physics), COMPLEX-SYSTEMS, Mathematical Physics, [PHYS]Physics [physics], Physics, 010308 nuclear & particles physics, Rotation around a fixed axis, Nuclear structure, GAMMA-RAY CORRELATIONS, Condensed Matter Physics, HIGH ANGULAR-MOMENTUM, Physics::History of Physics, Atomic and Molecular Physics, and Optics, FLUCTUATION PROPERTIES, Nuclear spectroscopy, QUASI-CONTINUUM, Excitation, STATISTICAL-THEORY
Abstract

International audience; The Niels Bohr Institute (NBI) has played a leading role in the development of nuclear spectroscopy at high spin and more particularly the study of rotational motion. Indeed, it laid the theoretical foundation stone and contributed to the birth of the workhorse of the field: the Compton-suppressed Ge array. In this article, we will focus, with special emphasis on the contribution of the NBI, on the properties of rotational motion at high excitation energy and on chaotic phenomena associated with nuclear superdeformation.

Published
2016

262. Proton alignments at high rotational frequency in 167,168Yb

Author

J.P. Sweeney, J. Simpson, A. Fitzpatrick, A. G. Smith, F. Lidén, S. Leoni, J.F. Sharpey-Schafer, S. J. Freeman, D.M. Thompson, J. Copnell, J.C. Lisle, J. Wrzesinski, W. Urban, C. W. Beausang, R. Chapman, S. Araddad, and S.J. Warburton

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Spectrometer, Atomic orbital, Proton, Pairing, Nuclear Theory, SHELL model, Atomic physics, Nuclear Experiment, Rotational frequency, Coincidence
Abstract

High-spin states in 167Yb and 168Yb have been investigated using the 124 Sn( 48 Ca, x n ) reaction at a bombarding energy of 210 MeV. The level sequences of the two nuclei were established from a large set of high-fold γ-ray coincidence data detected in the EUROGAM spectrometer. The experimentally observed upbends at high rotational frequency are discussed in terms of the cranked shell model for protons both with and without pairing. An unpaired crossing involving interchange of proton orbitals is tentatively identified. No evidence was found for hyperdeformation.

Published
1995

263. Morpho-functional follow-up of modified Indiana Pouch

Author

S. Leoni, Dott. S. Spatafora, R. Rossi Cesolari, C. Borelli, G. Leone, and A. Mora

Subjects
03 medical and health sciences, 0302 clinical medicine, biology, 030220 oncology & carcinogenesis, 030232 urology & nephrology, Indiana pouch, Morpho, General Medicine, Anatomy, biology.organism_classification
Abstract

— Between November ‘90 and August ‘94, 55 patients underwent modified Indiana Pouch. Our modifications include the isolation of 20 cm of right colon, the creation of a 15 cm long ileal patch, taeniotomies of partial detubularized cecum, Le Duc ureterocolic anastomosis and umbilical stomal positioning. An orthotopic reservoir was constructed in 2 young exstrophic patients. The ileal limb was anastomosed to the introitus vaginalis in a female and by an original, staged operation to the epispadic urethral plate in a male. The continence rate was 91%. The mean pouch capacity was 500 ± 40 cc, the filling pressure was 10 ± 2 cm H2O and the ileocecal valve resistance was 85 ± 6 cm H2O. 12 late complications were reported (4 stomal stenoses, 3 parastomal hernias, 1 severe ureteral stenosis, 2 high pressure pouches, 2 decompensated reservoirs). No ureteral reflux renal function decrease, metabolic acidosis or vitamin B12 reduction was observed. We conclude that modified Indiana Pouch is a reliable, reproducible, easy-to-perform technique with an acceptable complication rate. On the other hand it has to be reserved for compliant patients.

Published
1995

264. PP-019 Centralised iv compounding: A pre-feasibility study in clinical practice

Author

E Bartolini, S Guglielmi, A Marinozzi, F Pilesi, C Bufarini, and S Leoni

Subjects
Drug, medicine.medical_specialty, Dose, business.industry, Medical record, media_common.quotation_subject, Central intravenous, 030226 pharmacology & pharmacy, Surgery, Clinical Practice, 03 medical and health sciences, 0302 clinical medicine, Compounding, Cardiac surgery department, Emergency medicine, medicine, 030212 general & internal medicine, General Pharmacology, Toxicology and Pharmaceutics, business, Syringe, media_common
Abstract

Background In clinical practice, intravenous injectable drugs (IV) are typically administered after extemporaneous reconstitution and preparation performed by nurses. This process can lead to undetected medication errors and microbial contamination. CIVAS Unit (Central IntraVenous Additive Services), centralised production facility that satisfies the quality and safety requirements of sterile medications, is a key solution developed to improve the safety of this process. Purpose This work represents a preliminary study to investigate the prescribing habits of different departments as a first step in the goal to centralise and automate the IV production process. Material and methods All medical records of patients admitted in June 2014 to various clinical departments (orthopaedics, infectious diseases division, cardiac surgery department) were inspected. All of the intravenous therapies were examined, focusing on class of drug, molecules prescribed, related dosage, dilution, posology and chemical stability. Results Within this sample, 5285 intravenous administrations were prescribed to 266 different patients (144 orthopaedics, 38 infectious disease, 84 cardiac surgery). Antibiotics were the most commonly prescribed class (36.6%), followed by diuretics (22.6%), painkillers (16.4%) and proton pump inhibitors (7.6%). Of these administrations, 16.1% were commercially available in ready to administer formulations, while 42.7% were available in solution for injection, and 41.2% as lyophilic drugs for reconstitution. The majority of these drugs were compounded prior to administration with a bag as a final container (90.9%), while the remaining 9.1% were administered in a syringe. The medications consisted of 84 different molecules. Of these, 20 molecules represented 83% of total administrations with furosemide (20.1%) being the most utilised, followed by cefazoline (10.7%) and paracetamol (9.8%). Dosages were mainly standard and single, with some exceptions. For example, furosemide was available in 4 different dosages. Comparing international scientific studies and official data, the 10 most common medications showed a stability longer than 24 h, ranging from 24 h to 10 days. Conclusion The goal of centralising and automating IV production is reasonable and promising given that the most used molecules are limited in number and utilised in a standard way. Moreover, drug stability demonstrated the feasibility of centralised production in advance and in creating dedicated storage. Next steps include evaluation of the economic aspects. No conflict of interest.

Published
2016

265. Interplay between collective and single particle excitations around neutron-rich doubly-magic nuclei

Author

S. Leoni

Subjects
Physics, Coupling, Valence (chemistry), Fission, Phonon, QC1-999, Nuclear Theory, Ion, Nuclear physics, Neutron capture, Neutron, Atomic physics, Nuclear Experiment, Nucleon
Abstract

The excitation spectra of nuclei with one or two particles outside a doubly-magic core are expected to be dominated, at low energy, by the couplings between phonon excitations of the core and valence particles. A survey of the experimental situation is given for some nuclei lying in close proximity of neutron-rich doubly-magic systems, such as 47,49 Ca, 133 Sb and 210 Bi. Data are obtained with various types of reactions (multinucleon transfer with heavy ions, cold neutron capture and neutron induced fission of 235 U and 241 Pu targets), with the employment of complex detection systems based on HPGe arrays. A comparison with theoretical calculations is also presented, in terms of large shell model calculations and of a phenomenological particle-phonon model. In the case of 133 Sb, a new microscopic “hybrid” model is introduced: it is based on the coupling between core excitations (both collective and non-collective) of the doubly-magic core and the valence nucleon, using the Skyrme effective interaction in a consistent way.

Published
2016

266. Spectroscopy of odd-mass cobalt isotopes toward theN=40subshell closure and shell-model description of spherical and deformed states

Author

S. M. Lenzi, P. G. Bizzeti, M. Ionescu-Bujor, F. Scarlassara, D. Bazzacco, Oliver Wieland, Suzana Szilner, D. R. Napoli, R. P. Singh, A. Iordachescu, J. J. Valiente-Dobón, A. M. Bizzeti-Sona, G. de Angelis, R. Menegazzo, A. Poves, L. Corradi, G. Pollarolo, M. Axiotis, E. Caurier, A. Gottardo, F. Recchia, C. A. Ur, S. Lunardi, A. Gadea, N. Marginean, R. Marginean, S. Aydin, D. Mengoni, E. Sahin, F. Della Vedova, F. Nowacki, R. Orlandi, A. M. Stefanini, D. Bucurescu, B. Million, E. Farnea, S. Leoni, P. J. R. Mason, A. Bracco, G. Benzoni, G. Montagnoli, and E. Fioretto

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, European community, SHELL model
Abstract

This work was partially supported by the European Community FP6, Structuring the ERA Integrated Infrastructure Initiative Contract No. EURONS RII3-CT-2004-506065, by MICINN, Spain (Contract No. FPA2011-29854), by IN2P3, France (Contract No. AIC-D-2011-648), by Comunidad de Madrid, Spain (Contract No. HEPHACOS S2009-ESP-1473), and by Generalitat Valenciana, Spain (Contract No. PROMETEO/ 2010/101). A. Gadea and E. Farnea acknowledge the support of MICINN, Spain, and INFN, Italy, through the AIC-D-2011-0746 bilateral action

Published
2012

267. γspectroscopy of calcium nuclei around doubly magic48Ca using heavy-ion transfer reactions

Author

A. Dewald, Th. Pissulla, S. Lunardi, D. Montanari, G. Germogli, G. de Angelis, Andrea Corsi, R. Orlandi, A. Gadea, Suzana Szilner, F. C. L. Crespi, L. Corradi, E. Fioretto, C. A. Ur, P. F. Bortignon, F. Scarlassara, R. Menegazzo, G. Bocchi, J. J. Valiente-Dobón, A. Gottardo, Gianluca Colò, W. Meczynski, R. Nicolini, P. Casati, E. Farnea, E. Sahin, F. Camera, G. Pollarolo, A. M. Stefanini, B. Million, A. Maj, F. Recchia, D. R. Napoli, D. Bazzacco, G. Montagnoli, M. Kmiecik, O. Wieland, D. Mengoni, S. M. Lenzi, Rajeev Singh, A. Bracco, G. Benzoni, S. Leoni, S. Bottoni, and N. Blasi

Subjects
Physics, Nuclear and High Energy Physics, Radiochemistry, Heavy ion, Christian ministry, Gamma spectroscopy, MAGIC (telescope)
Abstract

This work was supported by the Italian Istituto Nazionale di Fisica Nucleare and partially by the Spanish MICINN (AIC10-D-000568 bilateral action and FPA2008-06419) and Generalitat Valenciana (Grant PROMETEO/2010/101). The work has also been partially supported by the Polish Ministry of Science and Higher Education (Grant No. N N202 309135)

Published
2012

268. Shape isomerism and shape coexistence effects on the Coulomb energy differences in theN=Znucleus66As and neighboringT=1multiplets

Author

S. Leoni, J. J. Valiente-Dobón, M. P. Carpenter, A. Bracco, C. A. Ur, A. Gottardo, S. M. Lenzi, B. S. Nara Singh, A. M. Bizzeti-Sona, B. Blank, P. G. Bizzeti, T. Martinez, D. Seweryniak, C. J. Lister, S. Zhu, C. J. Chiara, D. Mengoni, D. R. Napoli, W. Reviol, D. G. Sarantites, Kenia Teodoro Wiedemann, E. Farnea, A. Gadea, A. Petrovici, S. Lunardi, R. Orlandi, O. L. Pechenaya, Kazunari Kaneko, Dimitar Tonev, E. Sahin, F. Recchia, R. Wadsworth, G. de Angelis, and John P. Greene

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Electric potential energy, SHELL model, Prolate spheroid, 01 natural sciences, Symmetry (physics), medicine.anatomical_structure, Isospin, Excited state, 0103 physical sciences, medicine, Coulomb, Atomic physics, 010306 general physics, Nucleus
Abstract

Excited states of the $N=Z=33$ nucleus ${}^{66}$As have been populated in a fusion-evaporation reaction and studied using $\ensuremath{\gamma}$-ray spectroscopic techniques. Special emphasis was put into the search for candidates for the $T=1$ states. A new 3${}^{+}$ isomer has been observed with a lifetime of 1.1(3) ns. This is believed to be the predicted oblate shape isomer. The excited levels are discussed in terms of the shell model and of the complex excited Vampir approaches. Coulomb energy differences are determined from the comparison of the $T=1$ states with their analog partners. The unusual behavior of the Coulomb energy differences in the $A=70$ mass region is explained through different shape components (oblate and prolate) within the members of the same isospin multiplets. This breaking of the isospin symmetry is attributed to the correlations induced by the Coulomb interaction.

Published
2012

269. AGATA-Advanced GAmma Tracking Array

Author

A. Colombo, Y. Mariette, A. Johnson, W. Korten, A. Brondi, T. Faul, J. Robin, R. Depalo, M. Slee, J. Gre¸bosz, H. C. Boston, H. Harroch, B. Rossé, M. Filliger, M. Gulmini, A. Korichi, S. Brambilla, J.R. Cresswell, C. Parisel, P. Edelbruck, F. Ameil, F. Camera, C. Oziol, Matthew Richard Dimmock, G. Salvato, F. Morbiducci, J. Ropert, M. Borsato, E. Legay, Marco Bellato, C. Santos, Gheorghe Pascovici, L. Charles, J. Pancin, G. Casati, P. G. Bizzeti, T. Stanios, S. Lhenoret, Diego Barrientos, P.M. Jones, Andreas Görgen, V. Chambert, S. Aydin, K. Hauschild, B. Hervieu, R. Nicolini, J. Simpson, H. J. Wollersheim, L. Lavergne, Pär-Anders Söderström, G. S. Simpson, G. Jaworski, F. Filmer, R. Griffiths, P.S. Morrall, M. Petcu, G. Lo Bianco, D. Linget, A. Givechev, D. C. Oxley, M. Kogimtzis, F. Salomon, J. Jolie, D. Wells, S. Moon, C. Aufranc, A. Corsi, T. Descombes, N. Goel, J. Thornhill, N. Warr, Serkan Akkoyun, B. Birkenbach, F. Dorangeville, Joël Chavas, P. Medina, Roberto Isocrate, C. Weber, E. Merchan, Bo Cederwall, I. Kojouharov, Enrique Sanchis, A. Lopez-Martens, Oliver Wieland, F. Le Blanc, D. Seddon, S. C. Letts, D. Bazzacco, J. Leske, B. Bruyneel, Alberto Pullia, L. Nelson, G. La Rana, B. Travers, I. Burrows, G. Maron, S. Coelli, J. J. Valiente-Dobón, F. Saillant, Piotr Bednarczyk, V.L. Ngo, J. Mierzejewski, Norbert Pietralla, R.S. Kempley, N. Kurz, M. Rebeschini, S. Fantinel, D. L. Balabanski, A. J. Boston, F. Tomasi, R. Berthier, M. D. Salsac, B. Dulny, C. Stahl, N. Dosme, C. Fanin, R. Baumann, S. Pietri, A. Astier, M. Nicoletto, J. van der Marel, A. Bracco, Björn Jonson, D. Mengoni, D. Bloor, Luna Pellegri, F. Lefebvre, D. Pugnére, J. Egea, S. Cabaret, D. Curien, M. Reese, C. Commeaux, Dirk Rudolph, A. Giannatiempo, F. Recchia, L. Ramina, A. Lermitage, C. A. Ur, R. M. Lieder, I.P. Brawn, R. Menegazzo, R. Raine, Krasimir Mitev, D. R. Napoli, G. Suliman, M. Kebbiri, Y. Drouen, Susan Rigby, W. Me¸czyński, R. Wadsworth, F. Didierjean, P. Desesquelles, Ch. Veyssiere, S. Leoni, Vicente González, P. Gros, Y. Le Noa, M. Castoldi, O. Möller, R. Orlandi, Thomas Beck, M. Şenyiğit, A. Jungclaus, L. Gibelin, Mohammed Kaci, Zs. Podolyák, J. Gerl, S. Erturk, W. Gast, B. Melon, V. Mendéz, R. Peghin, P. Molini, M. N. Erduran, D. Conventi, Pankaj S. Joshi, E. Clément, F.A. Beck, A. Austin, A. Cortesi, J. Palin, P. Cocconi, L. J. Harkness, F. C. L. Crespi, Dirk Weisshaar, P. Sona, A. Czermak, D. Lersch, N. Blasi, Anton Khaplanov, O. Stezowski, B. Rubio, R. Venturelli, M.-H. Sigward, E. Viscione, José Salt, C. S. Özben, Giancarlo Ripamonti, P. Spolaore, Johan Nyberg, S. M. Lenzi, L. Legeard, N. Redon, C. Rossi Alvarez, C. He, R. Chapman, P. Le Pouhalec, C. Diarra, Herbert Hess, T. Engert, A. Kaşkaş, Stanislav Tashenov, S. Klupp, C. Michelagnoli, Elif Ince, A. Algora, J. F. Smith, M. Ozille, Alessandro Zucchiatti, Angelo Geraci, A. Olariu, M. Labiche, N. Karkour, Stefano Riboldi, P. Bourgault, C. M. Petrache, M. Palacz, M. El Chambit, J.-L. Cercus, M. Zie¸bliński, Alex Wiens, R. Beunard, X. Lafay, T. Habermann, M. Karolak, L. Costa, Y. Aubert, Begoña Quintana, A P Robinson, V. F. E. Pucknell, D. Rosso, A. Capsoni, Emanuele Vardaci, L. Mihailescu, M. Tripon, E. Farnea, Ch. Theisen, Enrico Calore, G. Duchêne, N. V. Zamfir, X. Grave, S. Lunardi, I.H. Lazarus, José Blasco, D. Montanari, J.A. Sampson, P. H. Regan, N. Marginean, M. Pignanelli, L. Arnold, G. Benzoni, R. Krücken, G. de Angelis, D.P. Scraggs, I. Piqueras, D. M. Cullen, A. Obertelli, A. Bürger, D. Bortolato, G. Rainovski, A.R. Mather, P. Reiter, C. Unsworth, G. Baulieu, P. J. Coleman-Smith, C. Boiano, M. Richer, Sébastien Perrier, Agnese Giaz, Reynold J. Cooper, V. Vandone, S. Tanguy, C. Domingo-Pardo, A. Bouty, A. N. Grint, A. Maj, A. Gottardo, L. Berti, E. Pachoud, R. Marginean, E. A. Stefanova, A. Triossi, M. Nespolo, D. Bucurescu, R. Moro, H.T.M. Ha, D. S. Judson, J. L. Tain, A. Perego, Francesco Lelli, P. Detistov, B.Y. Ky, J. Ljungvall, B. Sowicki, M. Schlarb, F. Azaiez, P. Pariset, Ertan Şahin, R. Gernhäuser, M. Turcato, John Paul Strachan, B. Million, A. Atac, F. Carrio, D. Delbourg, F. Veronese, Th. Kröll, B. Cahan, A. Hernandez-Prieto, M. A. Bentley, K.M.M. Tun-Lanoë, B. Alikhani, P. Boutachkov, S. Leboutelier, Maria Doncel, A. M. Bizzeti-Sona, R. Touzery, A. Nannini, A. Lotode, P. J. Nolan, G. Rampazzo, F. Zocca, H. Schaffner, J. Eberth, A. Gadea, N. Toniolo, T. Hüyük, Q.T. Doan, P. Petkov, S. Broussard, S. Badoer, M. Rigato, Philip M Walker, J. Pouthas, Ch. Finck, L. Milechina, M. Norman, E. Pierre, J. Roccaz, S.J. Colosimo, Lázaro Guevara, Glyn Wittwer, Millan, Vicente Gonzalez -- 0000-0001-6014-2586, Rainovski, Georgi -- 0000-0002-1729-0249, Jaworski, Grzegorz -- 0000-0003-2241-0329, KORTEN, Wolfram -- 0000-0002-3940-0816, Domingo-Pardo, Cesar -- 0000-0002-2915-5466, Triossi, Andrea -- 0000-0001-5140-9154, Huyuk, Tayfun -- 0000-0003-0597-9767, Ince, Elif -- 0000-0003-4821-5441, Algora, Alejandro -- 0000-0002-5199-1794, Calore, Enrico -- 0000-0002-2301-3838, Rubio, Berta -- 0000-0002-9149-4151, THEISEN, Christophe -- 0000-0002-8509-1022, Rudolph, Dirk -- 0000-0003-1199-3055, Gadea, Andres -- 0000-0002-4233-1970, santos, cayetano -- 0000-0003-0727-1914, nannini, adriana -- 0000-0003-0659-7648, Depalo, Rosanna -- 0000-0003-3943-7982, Suliman, gabriel -- 0000-0001-8475-1992, Blasco, Jose-Maria -- 0000-0002-7663-9092, Petrache, Costel -- 0000-0001-8419-1390, Pietralla, Norbert -- 0000-0002-4797-3032, Cederwall, Bo -- 0000-0003-1771-2656, Zucchiatti, Alessandro -- 0000-0002-3647-596X, Mendez Munoz, Victor -- 0000-0002-9044-1189, Kruecken, Reiner -- 0000-0002-2755-8042, Napoli, Daniel Ricardo -- 0000-0002-8154-6958, Tain, Jose L. -- 0000-0002-3263-6965, SANCHIS, ENRIQUE -- 0000-0002-9689-9131, Zieblinski, Miroslaw -- 0000-0002-8693-7317, Hauschild, Karl -- 0000-0003-2862-2445, Montanari, Daniele -- 0000-0002-1980-7686, senyigit, menekse -- 0000-0002-2408-4419, La Rana, Giovanni -- 0000-0003-2814-4113, Menegazzo, Roberto -- 0000-0002-3060-5276, Soderstrom, Par-Anders -- 0000-0002-9504-2814, Unsworth, Carl -- 0000-0002-4100-7466, Camera, Franco -- 0000-0003-1731-4834, Gorgen, Andreas -- 0000-0003-1916-9941, Hernandez Prieto, Alvaro -- 0000-0002-0340-0240, Recchia, Francesco -- 0000-0002-8428-0112, de France, Gilles -- 0000-0002-7439-1759, GOTTARDO, Andrea -- 0000-0002-0390-5767, Perrier, Sebastien -- 0000-0001-5055-9046, Sowicki, Bogdan -- 0000-0002-7208-0690, Robinson, Andrew -- 0000-0002-2510-1321, Sahin, Eda -- 0000-0003-0683-5140, Pullia, Alberto -- 0000-0002-6393-747X, Lelli, Francesco -- 0000-0003-1900-9171, Clement, Emmanuel -- 0000-0003-1887-717X, benzoni, giovanna -- 0000-0002-7938-0338, Jonson, Bjorn -- 0000-0002-9697-9115, Bednarczyk, Piotr -- 0000-0002-5699-5292, Jones, Pete -- 0000-0001-7480-6603, Nicoletto, Marino -- 0000-0001-9301-0782, Ripamonti, Giancarlo -- 0000-0002-9406-021X, Bentley, Michael -- 0000-0001-8401-3455, Pellegri, Luna -- 0000-0002-3227-3332, Barrientos, Diego -- 0000-0001-9693-2942, GIAZ, Agnese -- 0000-0002-2550-450X, [Boston, A. J. -- Boston, H. C. -- Colosimo, S. -- Cooper, R. J. -- Cresswell, J. R. -- Dimmock, M. R. -- Filmer, F. -- Grint, A. N. -- Harkness, L. J. -- Judson, D. S. -- Mather, A. R. -- Moon, S. -- Nelson, L. -- Nolan, P. J. -- Norman, M. -- Oxley, D. C. -- Rigby, S. -- Sampson, J. -- Scraggs, D. P. -- Seddon, D. -- Slee, M. -- Stanios, T. -- Thornhill, J. -- Unsworth, C. -- Wells, D.] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 7ZE, Merseyside, England -- [Akkoyun, S. -- Atac, A. -- Kaskas, A. -- Senyigit, M.] Ankara Univ, Fac Sci, Dept Phys, TR-06100 Ankara, Turkey -- [Algora, A. -- Barrientos, D. -- Domingo-Pardo, C. -- Egea, J. -- Gadea, A. -- Hueyuek, T. -- Kaci, M. -- Mendez, V. -- Rubio, B. -- Salt, J. -- Tain, J. L.] Univ Valencia, CSIC, IFIC, E-46980 Paterna, Spain -- [Alikhani, B. -- Boutachkov, P. -- Givechev, A. -- Goel, N. -- Leske, J. -- Merchan, E. -- Moeller, O. -- Pietralla, N. -- Reese, M. -- Stahl, C.] Tech Univ Darmstadt, IKP, D-64289 Darmstadt, Germany -- [Ameil, F. -- Beck, T. -- Boutachkov, P. -- Domingo-Pardo, C. -- Engert, T. -- Gerl, J. -- Goel, N. -- Habermann, T. -- Kojouharov, I. -- Kurz, N. -- Merchan, E. -- Pietri, S. -- Schaffner, H. -- Tashenov, S. -- Wollersheim, H. J.] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany -- [de Angelis, G. -- Badoer, S. -- Berti, L. -- Calore, E. -- Cocconi, P. -- Conventi, D. -- Costa, L. -- Fantinel, S. -- Gadea, A. -- Gottardo, A. -- Gulmini, M. -- He, C. -- Ince, E. -- Kroell, Th. -- Lelli, F. -- Maron, G. -- Molini, P. -- Napoli, D. R. -- Rigato, M. -- Rosso, D. -- Sahin, E. -- Spolaore, P. -- Toniolo, N. -- Valiente-Dobon, J. J.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, IT-35020 Padua, Italy -- [Arnold, L. -- Baumann, R. -- Beck, F. A. -- El Chambit, M. -- Charles, L. -- Curien, D. -- Didierjean, F. -- Duchene, G. -- Faul, T. -- Filliger, M. -- Finck, Ch. -- Medina, P. -- Pachoud, E. -- Parisel, C. -- Piqueras, I. -- Richer, M. -- Robin, J. -- Santos, C. -- Sigward, M. -H. -- Weber, C.] Univ Strasbourg, IPHC, F-67037 Strasbourg, France -- [Arnold, L. -- Baumann, R. -- Beck, F. A. -- El Chambit, M. -- Charles, L. -- Curien, D. -- Didierjean, F. -- Duchene, G. -- Faul, T. -- Filliger, M. -- Finck, Ch. -- Medina, P. -- Pachoud, E. -- Parisel, C. -- Piqueras, I. -- Richer, M. -- Robin, J. -- Santos, C. -- Sigward, M. -H. -- Weber, C.] CNRS, UMR 7178, F-67037 Strasbourg, France -- [Astier, A. -- Cabaret, S. -- Desesquelles, P. -- Dosme, N. -- Gibelin, L. -- Ha, H. T. M. -- Hauschild, K. -- Karkour, N. -- Korichi, A. -- Lafay, X. -- Leboutelier, S. -- Legay, E. -- Lhenoret, S. -- Linget, D. -- Ljungvall, J. -- Lopez-Martens, A. -- Morbiducci, F. -- Ngo, V. L. -- Pariset, P. -- Perrier, S. -- Pierre, E. -- Roccaz, J. -- Travers, B.] Univ Paris 11, CNRS, IN2P3, CSNSM, F-91405 Orsay, France -- [Atac, A. -- Nyberg, J. -- Soderstrom, P. -A.] Uppsala Univ, Dept Phys & Astron, Uppsala, Sweden -- [Atac, A. -- Cederwall, B. -- Johnson, A. -- Khaplanov, A. -- van der Marel, J. -- Milechina, L. -- Tashenov, S.] Royal Inst Technol, SE-10691 Stockholm, Sweden -- [Aubert, Y. -- Azaiez, F. -- Le Blanc, F. -- Cercus, J. -L. -- Chambert, V. -- Commeaux, C. -- Delbourg, D. -- Diarra, C. -- Dorangeville, F. -- Edelbruck, P. -- Grave, X. -- Guevara, L. -- Harroch, H. -- Ky, B. Y. -- Lavergne, L. -- Lefebvre, F. -- Lermitage, A. -- Olariu, A. -- Oziol, C. -- Petrache, C. -- Pouthas, J. -- Salomon, F. -- Tanguy, S. -- Tun-Lanoe, K. M. M.] Univ Paris 11, CNRS, IN2P3, IPNO, F-91406 Orsay, France -- [Aufranc, C. -- Baulieu, G. -- Doan, Q. T. -- Pugnere, D. -- Redon, N. -- Rosse, B. -- Stezowski, O.] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France -- [Austin, A. -- Burrows, I. -- Coleman-Smith, P. J. -- Griffiths, R. -- Kogimtzis, M. -- Labiche, M. -- Lazarus, I. H. -- Letts, S. C. -- Morrall, P. S. -- Palin, J. -- Pucknell, V. F. E. -- Simpson, J. -- Strachan, J.] STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England -- [Aydin, S. -- Bazzacco, D. -- Bellato, M. -- Bortolato, D. -- Chavas, J. -- Colombo, A. -- Fanin, C. -- Farnea, E. -- Isocrate, R. -- Kroell, Th. -- Lenzi, S. M. -- Lunardi, S. -- Marginean, R. -- Menegazzo, R. -- Mengoni, D. -- Michelagnoli, C. -- Nespolo, M. -- Nicoletto, M. -- Peghin, R. -- Ramina, L. -- Rampazzo, G. -- Rebeschini, M. -- Recchia, F. -- Rossi Alvarez, C. -- Salvato, G. -- Triossi, A. -- Turcato, M. -- Ur, C. A. -- Venturelli, R. -- Veronese, F.] Ist Nazl Fis Nucl, Sez Padova, IT-35131 Padua, Italy -- [Balabanski, D. L. -- Detistov, P. -- Petkov, P. -- Stefanova, E.] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria -- [Bednarczyk, P. -- Czermak, A. -- Dulny, B. -- Grebosz, J. -- Maj, A. -- Meczynski, W. -- Sowicki, B. -- Zieblinski, M.] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland -- [Bentley, M. A. -- Bloor, D. -- Joshi, P. -- Wadsworth, R.] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England -- [Benzoni, G. -- Blasi, N. -- Boiano, C. -- Bracco, A. -- Brambilla, S. -- Camera, F. -- Capsoni, A. -- Casati, G. -- Coelli, S. -- Corsi, A. -- Cortesi, A. -- Crespi, F. C. L. -- Geraci, A. -- Giaz, A. -- Leoni, S. -- Million, B. -- Montanari, D. -- Nicolini, R. -- Pellegri, L. -- Pignanelli, M. -- Pullia, A. -- Riboldi, S. -- Ripamonti, G. -- Tomasi, F. -- Vandone, V. -- Viscione, E. -- Wieland, O. -- Zocca, F.] Ist Nazl Fis Nucl, Sez Milano, IT-20133 Milan, Italy -- [Berthier, R. -- Bouty, A. -- Broussard, S. -- Buerger, A. -- Drouen, Y. -- Gros, P. -- Goergen, A. -- Hervieu, B. -- Karolak, M. -- Kebbiri, M. -- Korten, W. -- Ljungvall, J. -- Lotode, A. -- Mariette, Y. -- Le Noa, Y. -- Obertelli, A. -- Le Pouhalec, P. -- Salsac, M. -D. -- Theisen, Ch. -- Touzery, R. -- Veyssiere, Ch.] CEA, Ctr Saclay, IRFU, F-91191 Gif Sur Yvette, France -- [Beunard, R. -- Bourgault, P. -- Cahan, B. -- Clement, E. -- de France, G. -- Legeard, L. -- Ozille, M. -- Pancin, J. -- Raine, R. -- Ropert, J. -A. -- Saillant, F. -- Tripon, M. -- Wittwer, G.] CEA DSM CNRS IN2P3, GANIL, F-14076 Caen, France -- [Birkenbach, B. -- Bruyneel, B. -- Eberth, J. -- Hess, H. -- Jolie, J. -- Lersch, D. -- Pascovici, G. -- Reiter, P. -- Warr, N. -- Weisshaar, D. -- Wiens, A.] Univ Cologne, IKP, D-50937 Cologne, Germany -- [Bizzeti, P. G. -- Bizzeti-Sona, A. M. -- Giannatiempo, A. -- Melon, B. -- Perego, A. -- Sona, P.] Univ Florence, Dipartimento Fis & Astron, IT-50019 Florence, Italy -- [Bizzeti, P. G. -- Bizzeti-Sona, A. M. -- Giannatiempo, A. -- Melon, B. -- Nannini, A. -- Perego, A. -- Sona, P.] Ist Nazl Fis Nucl, Sez Firenze, IT-50019 Florence, Italy -- [Blasco, J. M. -- Carrio, F. -- Egea, J. -- Gonzalez, V. -- Sanchis, E.] Univ Valencia, Dept Elect Engn, E-46100 Burjassot, Valencia, Spain -- [Borsato, M. -- Bortolato, D. -- Lenzi, S. M. -- Lunardi, S. -- Marginean, R. -- Mengoni, D. -- Michelagnoli, C. -- Nespolo, M. -- Recchia, F. -- Salvato, G. -- Triossi, A. -- Venturelli, R.] Univ Padua, Dipartimento Fis, IT-35131 Padua, Italy -- [Bracco, A. -- Camera, F. -- Corsi, A. -- Crespi, F. C. L. -- Giaz, A. -- Leoni, S. -- Montanari, D. -- Nicolini, R. -- Pellegri, L. -- Pignanelli, M. -- Pullia, A. -- Riboldi, S. -- Vandone, V.] Univ Milan, Dipartimento Fis, IT-20133 Milan, Italy -- [Brawn, I. P.] STFC Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England -- [Brondi, A. -- Moro, R. -- La Rana, G. -- Vardaci, E.] Univ Naples Federico II, Dipartimento Fis, IT-80126 Naples, Italy -- [Brondi, A. -- Moro, R. -- La Rana, G. -- Vardaci, E.] Ist Nazl Fis Nucl, Sez Napoli, IT-80126 Naples, Italy -- [Bucurescu, D. -- Marginean, N. -- Marginean, R. -- Petcu, M. -- Ur, C. A.] Natl Inst Phys & Nucl Engn, Bucharest, Romania -- [Buerger, A. -- Suliman, G. -- Zamfir, N. V.] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany -- [Buerger, A.] Univ Oslo, Dept Phys, N-0316 Oslo, Norway -- [Casati, G. -- Geraci, A. -- Ripamonti, G.] Politecn Milan, Dipartimento Elettron & Informaz, IT-20133 Milan, Italy -- [Castoldi, M. -- Zucchiatti, A.] Ist Nazl Fis Nucl, Sez Genova, IT-16146 Genoa, Italy -- [Chapman, R. -- Mengoni, D. -- Orlandi, R. -- Smith, J. F.] Univ W Scotland, Sch Engn, Paisley PA1 2BE, Renfrew, Scotland -- [Cullen, D. M. -- Robinson, A. P.] Univ Manchester, Sch Phys & Astron, Schuster Lab, Manchester M13 9PL, Lancs, England -- [Depalo, R.] Univ Padua, Dipartimento Astron, IT-35131 Padua, Italy -- [Descombes, T. -- Simpson, G.] Univ Grenoble 1, CNRS, IN2P3, LPSC,INP Grenoble, F-38026 Grenoble, France -- [Doncel, M. -- Hernandez-Prieto, A. -- Quintana, B.] Univ Salamanca, Dept Fis Fundamental, E-37008 Salamanca, Spain -- [Erduran, M. N. -- Ince, E.] Istanbul Univ, Istanbul, Turkey -- [Erturk, S.] Nigde Univ, Fac Sci, Dept Phys, TR-51200 Nigde, Turkey -- [Gast, W. -- Lieder, R. M. -- Mihailescu, L.] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany -- [Gernhaeuser, R. -- Klupp, S. -- Kruecken, R. -- Schlarb, M.] Tech Univ Munich, Phys Dept E12, D-85748 Garching, Germany -- [Jaworski, G.] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland -- [Jaworski, G. -- Mierzejewski, J. -- Palacz, M.] Univ Warsaw, Heavy Ion Lab, PL-02093 Warsaw, Poland -- [Jones, P.] Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland -- [Jonson, B.] Chalmers, S-41296 Gothenburg, Sweden -- [Jungclaus, A. -- Orlandi, R.] CSIC, Inst Estruct Mat, E-28006 Madrid, Spain -- [Kempley, R. S. -- Podolyak, Z. -- Regan, P. H. -- Walker, P. M.] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England -- [Mitev, K. -- Rainovski, G.] Sofia Univ St Kliment Ohridski, Fac Phys, Sofia, Bulgaria -- [Ozben, C.] Istanbul Tech Univ, TR-80626 Istanbul, Turkey -- [Rudolph, D.] Lund Univ, Dept Phys, SE-22100 Lund, Sweden, Research Group: Information Management, CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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)-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)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), Institut de Physique Nucléaire d'Orsay (IPNO), informatique, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CSNSM MECA, 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)-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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), CSNSM INFOR, CSNSM ELEC, Matière Nucléaire, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), AGATA, Akkoyun, S., Algora, A., Alikhani, B., Ameil, F., De Angelis, G, Arnold, L., Astier, A., Ataç, A., Aubert, Y., Aufranc, C., Austin, A., Aydin, S., Azaiez, F., Badoer, S., Balabanski, D. L., Barrientos, D., Baulieu G., L, Baumann, R., Bazzacco, D., Beck, F. A., Beck, T., Bednarczyk, P., Bellato, M., Bentley, M. A., Benzoni, G., Berthier, R., Berti, L., Beunard, R., Lo Bianco, G., Birkenbach, B., Bizzeti, P. G., Bizzeti Sona, A. M., Le Blanc, F., Blasco, J. M., Blasi, N., Bloor, D., Boiano, C., Borsato, M., Bortolato, D., Boston, A. J., Boston, H. C., Bourgault, P., Boutachkov, P., Bouty, A., Bracco, A., Brambilla, S., Brawn, I. P., Brondi, Augusto, Broussard, S., Bruyneel, B., Bucurescu, D., Burrows, I., Bürger, A., Cabaret, S., Cahan, B., Calore, E., Camera, F., Capsoni, A., Carrió, F., Casati, G., Castoldi, M., Cederwall, B., Cercus J., L, Chambert, V., El Chambit, M., Chapman, R., Charles, L., Chavas, J., Clément, E., Cocconi, P., Coelli, S., Coleman Smith, P. J., Colombo, A., Colosimo, S., Commeaux, C., Conventi, D., Cooper, R. J., Corsi, A., Cortesi, A., Costa, L., Crespi, F. C. L., Cresswell, J. R., Cullen, D. M., Curien, D., Czermak, A., Delbourg, D., Depalo, R., Descombes, T., Désesquelles, P., Detistov, P., Diarra, C., Didierjean, F., Dimmock, M. R., Doan, Q. T., Domingo Pardo, C., Doncel, M., Dorangeville, F., Dosme, N., Drouen, Y., Duchêne, G., Dulny, B., Eberth, J., Edelbruck, P., Egea, J., Engert, T., Erduran, M. N., Ertürk, S., Fanin, C., Fantinel, S., Farnea, E., Faul, T., Filliger, M., Filmer, F., Finck, C., De France, G., Gadea, A., Gast, W., Geraci, A., Gerl, J., Gernhäuser, R., Giannatiempo, A., Giaz, A., Gibelin, L., Givechev, A., Goel, N., González, V., Gottardo, A., Grave, X., Grȩbosz, J., Griffiths, R., Grint, A. N., Gros, P., Guevara, L., Gulmini, M., Görgen, A., Ha, H. T. M., Habermann, T., Harkness, L. J., Harroch, H., Hauschild, K., He, C., Hernández Prieto, A., Hervieu, B., Hess, H., Hüyük, T., Ince, E., Isocrate, R., Jaworski, G., Johnson, A., Jolie, J., Jones, P., Jonson, B., Joshi, P., Judson, D. S., Jungclaus, A., Kaci, M., Karkour, N., Karolak, M., Kaşkaş, A., Kebbiri, M., Kempley, R. S., Khaplanov, A., Klupp, S., Kogimtzis, M., Kojouharov, I., Korichi, A., Korten, W., Kröll, T., Krücken, R., Kurz, N., Ky, B. Y., Labiche, M., Lafay, X., Lavergne, L., Lazarus, I. H., Leboutelier, S., Lefebvre, F., Legay, E., Legeard, L., Lelli, F., Lenzi, S. M., Leoni, S., Lermitage, A., Lersch, D., Leske, J., Letts, S. C., Lhenoret, S., Lieder, R. M., Linget, D., Ljungvall, J., Lopez Martens, A., Lotodé, A., Lunardi, S., Maj, A., Van Der Marel, J., Mariette, Y., Marginean, N., Marginean, R., Maron, G., Mather, A. R., Mȩczyński, W., Mendéz, V., Medina, P., Melon, B., Menegazzo, R., Mengoni, D., Merchan, E., Mihailescu, L., Michelagnoli, C., Mierzejewski, J., Milechina, L., Million, B., Mitev, K., Molini, P., Montanari, D., Moon, S., Morbiducci, F., Moro, RENATA EMILIA MARIA, Morrall, P. S., Möller, O., Nannini, A, Napoli, D. R., Nelson, L., Nespolo, M., Ngo, V. L., Nicoletto, M., Nicolini, R., Le Noa, Y., Nolan, P. J., Norman, M., Nyberg, J., Obertelli, A., Olariu, A., Orlandi, R., Oxley, D. C., Özben, C., Ozille, M., Oziol, C., Pachoud, E., Palacz, M., Palin, J., Pancin, J., Parisel, C., Pariset, P., Pascovici, G., Peghin, R., Pellegri, L., Perego, A., Perrier, S., Petcu, M., Petkov, P., Petrache, C., Pierre, E., Pietralla, N., Pietri, S., Pignanelli, M., Piqueras, I., Podolyak, Z., Le Pouhalec, P., Pouthas, J., Pugnére D., L, Pucknell, V. F. E., Pullia, A., Quintana, B., Raine, R., Rainovski, G., Ramina, L., Rampazzo, G., LA RANA, Giovanni, Rebeschini, M., Recchia, F., Redon N., L, Reese M., C, Reiter, P., Regan, P. H., Riboldi, S., Richer, M., Rigato, M., Rigby, S., Ripamonti, G., Robinson, A., Robin, J., Roccaz, J., Ropert, J. A., Rossé, B. l., Rossi Alvarez, C., Rosso, D., Rubio, B., Rudolph, D., Saillant, F., Şahin, E., Salomon, F., Salsac, M. D., Salt, J., Salvato, G., Sampson, J., Sanchis, E., Santos, C., Schaffner, H., Schlarb, M., Scraggs, D. P., Seddon, D., Şenyiǧit, M., Sigward, M. H., Simpson, G., Simpson, J., Slee, M., Smith, J. F., Sona, P., Sowicki, B., Spolaore, P., Stahl, C., Stanios, T., Stefanova, E., Stézowski, O., Strachan, J., Suliman, G., Söderström, P. A., Tain, J. L., Tanguy, S., Tashenov, S., Theisen, C. h., Thornhill, J., Tomasi, F., Toniolo, N., Touzery, R., Travers, B., Triossi, A., Tripon, M., Tun Lanoë, K. M. M., Turcato, M., Unsworth, C., Ur, C. A., Valiente Dobon, J. J., Vandone, V., Vardaci, Emanuele, Venturelli, R., Veronese, F., Veyssiere, C., Viscione, E., Wadsworth, R., Walker, P. M., Warr, N., Weber, C., Weisshaar, D., Wells, D., Wieland, O., Wiens A., U, Wittwer, G., Wollersheim, H. J., Zocca, F., Zamfir, N. V., Ziȩbliński, M., Zucchiatti, A., 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)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), 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)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and 0-Belirlenecek

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Pulse-shape and gamma-ray tracking algorithms, FOS: Physical sciences, Semiconductor detector performance and simulations, Integrated circuit, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Tracking (particle physics), gamma-Ray tracking, 01 natural sciences, Pulse-shape and γ-ray tracking algorithms, law.invention, Data acquisition, law, 0103 physical sciences, ddc:530, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment (nucl-ex), 010306 general physics, γ-Ray spectroscopy, Nuclear Experiment, Instrumentation, Digital signal processing, Event reconstruction, gamma-Ray spectroscopy, Physics, sezele, Spectrometer, Spectrometers, 010308 nuclear & particles physics, business.industry, Detector, AGATA, Digital signals, HPGe detectors, Pulse-shape, Ray tracking, HPGe detectors, Algorithms, Crystals, Germanium, Semiconductor detectors, Signal processing, Spectrometry, Tracking (position), γ-Ray tracking, Instrumentation and Detectors (physics.ins-det), AGATA, Física nuclear, business, Computer hardware
Abstract

WOS: 000300864200005, The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate the next generation gamma-ray spectrometer. AGATA is based on the technique of gamma-ray energy tracking in electrically segmented high-purity germanium crystals. This technique requires the accurate determination of the energy, time and position of every interaction as a gamma ray deposits its energy within the detector volume. Reconstruction of the full interaction path results in a detector with very high efficiency and excellent spectral response. The realisation of gamma-ray tracking and AGATA is a result of many technical advances. These include the development of encapsulated highly segmented germanium detectors assembled in a triple cluster detector cryostat, an electronics system with fast digital sampling and a data acquisition system to process the data at a high rate. The full characterisation of the crystals was measured and compared with detector-response simulations. This enabled pulse-shape analysis algorithms, to extract energy, time and position, to be employed. In addition, tracking algorithms for event reconstruction were developed. The first phase of AGATA is now complete and operational in its first physics campaign. In the future AGATA will be moved between laboratories in Europe and operated in a series of campaigns to take advantage of the different beams and facilities available to maximise its science output. The paper reviews all the achievements made in the AGATA project including all the necessary infrastructure to operate and support the spectrometer. (C) 2011 Elsevier B.V. All rights reserved., EU [RII3-CT-2004-506065]; German BMBF [06K-167, 06KY2051]; Swedish Research Council; Knut and Alice Wallenberg Foundation; UK EPSRC Engineering and Physical Sciences Research Council; UK STFC Science and Technology Facilities Council; AWE plc; Scientific and Technological Research Council of Turkey [106T055]; Ankara University [05B4240002]; Polish Ministry of Science and Higher Education [DPN/N190/AGATA/2009]; Spanish MICINN [FPA2008-06419, FPA2009-13377-C02-02]; Spanish Consolider-Ingenio Programme CPAN [CSD2007-00042]; Generalitat Valenciana [PROMETEO/2010/101]; MICINN, Spain; INFN, Italy [AIC10-D-000568]; Science and Technology Facilities Council [ST/F012039/1, ST/J000094/1, ST/F004192/1, ST/J000159/1, ST/I504940/1, NuSTAR, ST/F006950/1, ST/I504916/1, ST/G000670/1, ST/F004060/1, ST/J000051/1, ST/J000108/1, ST/G000670/1 NuSTAR, ST/I504959/1, ST/G000727/1, ST/F004052/1, ST/F004184/1], AGATA and this work is supported by the European funding bodies and the EU Contract RII3-CT-2004-506065, the German BMBF under Grants 06K-167 and 06KY2051, the Swedish Research Council and the Knut and Alice Wallenberg Foundation, UK EPSRC Engineering and Physical Sciences Research Council, UK STFC Science and Technology Facilities Council, AWE plc, Scientific and Technological Research Council of Turkey (Proj. nr. 106T055) and Ankara University (BAP Proj. nr. 05B4240002), the Polish Ministry of Science and Higher Education under Grant DPN/N190/AGATA/2009, the Spanish MICINN under grants FPA2008-06419 and FPA2009-13377-C02-02, the Spanish Consolider-Ingenio 2010 Programme CPAN (contract number CSD2007-00042) the Generalitat Valenciana under Grant PROMETEO/2010/101, and research performed in the frame of the GSI-IN2P3 collaboration agreement number 02-42. A. Gadea and E. Farnea acknowledge the support of MICINN, Spain, and INFN, Italy, through the AIC10-D-000568 bilateral action.

Published
2012

270. Spectroscopy of neutron-rich Co nuclei populated in the 70Zn+ 238U reaction

Author

A. Gadea, P. Mason, G. de Angelis, D. Mengoni, R. Menegazzo, F. Camera, F. Della Vedova, J. J. Valiente-Dobón, Suzana Szilner, S. Lunardi, G. Montagnoli, Benedicte Million, Sibel Zehra Aydin, D. Bazzacco, L. Corradi, F. Nowacki, Kamila Sieja, E. Fioretto, C. A. Ur, M. Ionescu-Bujor, A. M. Stefanini, G. Pollarolo, O. Wieland, A. Iordachescu, R Mǎrginean, R. P. Singh, M. Axiotis, F. Recchia, D. R. Napoli, A. M. Bizzeti-Sona, Alfredo Poves, S. M. Lenzi, P. G. Bizzeti, Fernando Scarlassara, E. Sahin, R. Orlandi, A. Bracco, G. Benzoni, D. Bucurescu, S. Leoni, E. Farnea, and N. Mǎrginean

Subjects
Physics, Clover detector, Magnetic spectrometers, Isotopes, Nuclear physics, Zinc, History, Spectrometer, Isotope, Nuclear Theory, Nuclear physics, Radiation, Computer Science Applications, Education, Ion, Semiconductor detector, Magnetic spectrometers, Isotopes, Clover detector, Neutron, Atomic physics, Nuclear Experiment, Spectroscopy, Beam (structure)
Abstract

Neutron-rich Co isotopes from N = 34 to 40 were studied through multinucleon transfer by bombarding a 238U target with a 460 MeV 70Zn beam at LNL. Gamma-recoil coincidences were recorded identifying the ions by a high-acceptance magnetic spectrometer (PRISMA) and detecting the gamma radiation by an array of HPGe clover detectors (CLARA). The results are discussed in comparison with the predictions of large-scale shell-model calculations.

Published
2012

271. Lifetime measurements of high-lying short lived states in [sup 69]As

Author

F. Recchia, M. Matejska-Minda, E. Sahin, Sibel Zehra Aydin, E. Farnea, G. Jaworski, G. de Angelis, C. A. Ur, M. Krzysiek, R. Menegazzo, S. Leoni, M. Kmiecik, M. Ciemala, J. Styczen, S. Brambilla, M. Zieblinski, P. Bednarczyk, R. Wadsworth, W. Meczynski, B. Fornal, A. Maj, M. Palacz, D. Montanari, C. Michelagnoli, S. Myalski, and T. Hüyük

Subjects
Physics, Mass number, fusion-evaporation reaction, Isotope, Attenuation, technology, industry, and agriculture, Nuclear structure, nuclear lifetimes, Deformation (meteorology), γ-ray spectroscopy, nuclear structure, Physics and Astronomy (all), symbols.namesake, Amplitude, Excited state, symbols, Atomic physics, Doppler effect
Abstract

Lifetimes of high-spin states in 69As have been measured using Doppler shift attenuation technique with the GASP and RFD setup. The determined transition probabilities indicate large deformation associated with some rotational bands in this nucleus.

Published
2012

272. Reaction dynamics and nuclear structure of moderately neutron-rich Ne isotopes by heavy-ion reactions

Author

F. Azaiez, N. Marginean, E. Vigezzi, B. Million, G. Pollarolo, R. Orlandi, S. Franchoo, B. Guiot, P. Mason, F. Recchia, G. Montagnoli, S. Bottoni, D. Bazzacco, A. Maj, A. M. Stefanini, E. Sahin, N. Blasi, A. Saltarelli, K. Zuber, F. Camera, E. Farnea, S. Szilner, A. Bracco, E. Fioretto, F. C. L. Crespi, S. Leoni, A. Gadea, C. A. Ur, J. J. Valiente-Dobón, F. Zocca, A. Corsi, J. Wrzesiński, R. Nicolini, G. Benzoni, S. Lunardi, D. Montanari, G. de Angelis, D. R. Napoli, I. Stefan, O. Wieland, Zs. Dombrádi, S. Aydin, D. Mengoni, L. Corradi, Fernando Scarlassara, S. M. Lenzi, Institut de Physique Nucléaire d'Orsay (IPNO), and 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)

Subjects
Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Nuclear Theory, Nuclear structure, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, medicine.anatomical_structure, Reaction dynamics, nuclear reaction, spectrometers, DWBA, 0103 physical sciences, medicine, Neutron, Heavy ion, Atomic physics, 010306 general physics, Nucleon, Nuclear Experiment, Nucleus
Abstract

The heavy-ion reaction 22Ne+208Pb at 128 MeV beam energy has been studied using the PRISMA-CLARA experimental setup at Legnaro National Laboratories. Elastic, inelastic, and one-nucleon transfer differential cross sections are measured and global agreement is obtained with semiclassical and distorted-wave Born approximation (DWBA) calculations. In particular, the angular distribution of the 2+ state of 22Ne is analyzed by DWBA and a similar calculation is performed for the unstable 24Ne nucleus, using existing data from the reaction 24Ne+208Pb at 182 MeV (measured at SPIRAL with the VAMOS-EXOGAM setup). In both cases the DWBA model gives a good reproduction of the experiment, pointing to a strong reduction of the β2(C) charge deformation parameter in 24Ne. This follows the trend predicted for the evolution of the quadrupole deformation along the Ne isotopic chain.

Published
2012

273. Measurements of dynamical dipole in isospin asymmetric fusion reactions

Author

A. Ordine, Gabriele Pasquali, S. Leoni, Domenico Santonocito, Giacomo Poggi, V. L. Kravchuk, M. D'Agostino, Giovanni Casini, C. Maiolino, T. Marchi, Luca Morelli, C. Rizzo, A. Bracco, S. Brambilla, V Vannini, G. Benzoni, M. Ciemala, F. Camera, S. Carboni, A. Giaz, Silvia Piantelli, M. Bruno, M. Kmiecik, M. Di Toro, M. Degelier, V. Vandone, B. Million, A. Nannini, O. Wieland, W Menczynski, N. Blasi, Giorgio Baiocco, D. Montanari, M. Cinausero, P. Bednarcyk, K. Mazurek, Maria Colonna, Alessandra Corsi, F. C. L. Crespi, R. Alba, L. Bardelli, F. Gramegna, Maurizio Bini, A. Maj, R. Nicolini, Massimo Chiari, Sandro Barlini, and V. Rizzi

Subjects
Physics, Nuclear reaction, History, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Asymmetry, Computer Science Applications, Education, Nuclear physics, Dipole, Physics and Astronomy (all), Nucleosynthesis, Yield (chemistry), Isospin, Nuclear fusion, Atomic physics, Nuclear Experiment, media_common, Oxygen-16
Abstract

In heavy ion nuclear reactions the process leading to complete fusion is expected to produce pre-equilibrium γ-ray emission, if particular conditions are met. Indeed, when there is an N/Z asymmetry between projectile and target, charge equilibration takes place with a collective dipole oscillation, called Dynamical Dipole (DD), associated to a γ-ray emission. The existing experimental data concerning this pre-equilibrium γ-ray emission are still rather scarce and manly concentrated in the A≊132 mass region. The very preliminary results concerning the measurement of the DD γ-ray emission in the fusion reaction 16O (Elab=192 MeV) + 116Sn at 12 MeV/u will be presented and compared with the γ yield measured for the same reaction at 8.1 and 15.6 MeV/u. The present experiment aims at the measurement of the total emission yield of the DD at 12 MeV/u where the predicted theoretical yield does not completely reproduce the experimental data. The experiment has been performed at the INFN Legnaro Laboratories using the GARFIELD-HECTOR array.

Published
2012

281. Valore Predittivo del Mapping Prostatico Nella Valutazione Preoperatoria Del Volume Della Neoplasia Prostatica: Studio Ecografico ed Anatomopatologico su 25 Pazienti Sottoposti a Prostatectomia Radicale Retropubica

Author

P. Zanonp, E. Casolari, S. Leoni, R. Rossi Cesolari, E. Nigrisoli, and A. Cavazza

Subjects
business.industry, Medicine, General Medicine, business
Abstract

Quantitative tumour volume is reported to be the single most important morphologic predictor for lymph node metastases and distant spread in the individual patient with prostatic cancer. 25 patients with histologically proved prostatic cancer underwent Prostatic Mapping before Radical Retropubic Prostatectomy. Surgical specimens were processed and prostatic cancer volume was calculated according to abbreviated standard procedure that avoids the serial blocking of prostatectomy specimens required by standard techniques. Our study demonstrated a strong correlation between Prostatic Mapping categories and prostatic cancer volumes. This ability of Prostatic Mapping to estimate preoperatively the tumour volume may be a useful clinical tool to help guide surgical therapy and assess prognosis.

Published
1994

282. Elastic, inelastic, and one-nucleon transfer processes in48Ca+64Ni

Author

G. Montagnoli, F. C. L. Crespi, A. Gadea, B. Million, D. Mengoni, E. Fioretto, Alessandro Zucchiatti, G. de Angelis, J. J. Valiente-Dobón, G. Lo Bianco, F. Recchia, R. Nicolini, G. Benzoni, F. Scarlassara, W. Meczynski, M. Kmiecik, D. R. Napoli, B. Guiot, A. Maj, C. A. Ur, O. Wieland, S. Lunardi, D. Bazzacco, D. Montanari, L. Corradi, A. M. Stefanini, F. Camera, Suzana Szilner, Rajeev Singh, S. M. Lenzi, G. Pollarolo, A. Bracco, R. Orlandi, S. Bottoni, Andrea Corsi, N. Blasi, S. Leoni, E. Farnea, and F. Della Vedova

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Christian ministry, Nucleon
Abstract

This work was supported by the Italian Istituto Nazionale di Fisica Nucleare and partially by the Spanish MICINN (ACI2009-1070 bilateral action) and Generalitat Valenciana (Grant Nos. BEST/2009/073 and PROMETEO/2010/101). The work has also been partially supported by the Polish Ministry of Science and Higher Education (Grant No. N N202 309135).

Published
2011

283. Reaction dynamics and nuclear structure studies via deep inelastic collisions with heavy-ions: spin and parity assignment in49Ca

Author

Alessandro Zucchiatti, D. Bazzacco, A. M. Stefanini, S. Lunardi, D. Montanari, M. Kmiecik, R. Orlandi, D. Mengoni, R. Nicolini, F. Recchia, Alessandra Corsi, G. Pollarolo, O. Wieland, G. de Angelis, G. Lo Bianco, A. Gadea, Suzana Szilner, D. R. Napoli, R. Silvestri, A. Maj, E. Fioretto, B. Million, S. M. Lenzi, F. Scarlassara, E. Farnea, G. Bocchi, G. Montagnoli, B. Guiot, F. C. L. Crespi, F. Della Vedova, L. Corradi, A. Bracco, G. Benzoni, S. Leoni, P. J. R. Mason, N. Blasi, W. Meczynski, C. A. Ur, J. J. Valiente-Dobón, F. Camera, and R. P. Singh

Subjects
Physics, History, education.field_of_study, Population, Inelastic collision, Gamma ray, Coulomb barrier, Computer Science Applications, Education, Reaction dynamics, Excited state, Neutron, Atomic physics, Nuclear Experiment, Nucleon, education
Abstract

The population and gamma decay of neutron rich nuclei around 48Ca has been measured at Legnaro National Laboratory with the PRISMA-CLARA setup, using deep-inelastic collisions (DIC) on 64Ni, at an energy approximately twice the Coulomb barrier. The reaction properties of the main products are investigated, focusing on total cross sections and angular distributions both integrated in energy and associated to the population of specific excited states. Gamma spectroscopy studies are also performed, giving evidence, for the first time in transfer reactions with heavy ions, of a large spin alignment (~70%), perpendicular to the reaction plane. This makes possible the use of angular distributions and polarization measurements to firmly establish the spin and parity of excited states populated in nucleon transfer channels, as in the case of 49Ca, where candidates for particle-core coupling are investigated. Both reaction and gamma spectroscopy studies demonstrate the relevance of DIC with heavy ions for a detailed investigation of moderately neutron rich systems.

Published
2011

284. Reaction Dynamics And Nuclear Structure Via Deep Inelastic Collisions With Heavy-Ions: Search For Particle-Vibration Couplings in [sup 49]Ca

Author

D. Montanari, S. Leoni, G. Benzoni, N. Blasi, G. Bocchi, A. Bracco, S. Brambilla, F. Camera, A. Corsi, F. C. L. Crespi, B. Million, R. Nicolini, O. Wieland, L. Corradi, G. de Angelis, F. Della Vedova, E. Fioretto, A. Gadea, B. Guiot, D. R. Napoli, R. Orlandi, F. Recchia, R. Silvestri, A. M. Stefanini, R. P. Singh, S. Szilner, J. J. Valiente-Dobon, D. Bazzacco, E. Farnea, S. M. Lenzi, S. Lunardi, P. Mason, D. Mengoni, G. Montagnoli, F. Scarlassara, C. Ur, G. Lo Bianco, A. Zucchiatti, M. Kmiecik, A. Maj, W. Meczynski, G. Pollarolo, Paraskevi Demetriou, Rauno Julin, and Sotirios Harissopulos

Subjects
Nuclear reaction, Physics, education.field_of_study, Excited state, Population, Inelastic collision, Coulomb barrier, Neutron, Atomic physics, Inelastic scattering, Nuclear Experiment, Deep inelastic scattering, education
Abstract

The deep inelastic reaction (DIC) 48Ca+64Ni, at an energy approximately 2.5 times above the Coulomb barrier, was studied using the CLARA‐PRISMA setup at the Laboratori Nazionali di Legnaro. Total cross sections and angular distributions, both energy integrated and associated to the population of selected excited states, are measured for the most intense reaction channels. The γ‐decay of the most intense reaction products is also studied. The use of angular distributions and polarization measurements of γ transitions allows to firmly establish spin and parity of excited states. Both reaction and gamma spectroscopy studies demonstrate the relevance of DIC with heavy ions for the investigation of moderately neutron rich systems.

Published
2011

285. Measurement of isospin mixing in [sup 80]Zr[sup ∗] at finite temperature

Author

A. Corsi, O. Wieland, S. Barlini, V. L. Kravchuk, A. Bracco, F. Camera, F. C. L. Crespi, A. Giaz, S. Leoni, R. Nicolini, V. Vandone, G. Benzoni, N. Blasi, S. Brambilla, B. Million, D. Montanari, L. Bardelli, M. Bini, G. Casini, A. Nannini, G. Pasquali, G. Poggi, M. Cinausero, M. Degerlier, F. Gramegna, T. Marchi, G. Baiocco, M. Bruno, M. D’Agostino, L. Morelli, G. Vannini, M. Ciemala, M. Kmiecik, A. Maj, K. Mazurek, W. Meczynski, S. Myalski, A. Ordine, Paraskevi Demetriou, Rauno Julin, and Sotirios Harissopulos

Subjects
Physics, Nuclear reaction, Dipole, Isospin, Nuclear Theory, Nuclear structure, Isotopes of zirconium, Resonance, Atomic physics, Nuclear Experiment, Radioactive decay, Mixing (physics)
Abstract

Isospin mixing induced by Coulomb interaction has been measured in the compound nucleus Z = N = 40 80Zr at T∼2 MeV produced in a fusion‐evaporation reaction. The observable sensitive to the isospin purity of the compound nucleus is the Giant Dipole Resonance γ decay. The degree of mixing of the compound nucleus has been obtained via Statistical Model analysis of the measured γ spectrum.

Published
2011

286. Fluctuations and mean field effects in rotational damping

Author

B. Herskind, Pier Francesco Bortignon, S. Leoni, E. Vigezzi, A. Bracco, Masayuki Matsuo, and Ricardo A. Broglia

Subjects
Physics, Nuclear and High Energy Physics, Classical mechanics, Mean field theory, Relaxation (NMR), Chaotic, Rotation around a fixed axis, Nuclear structure, Rotational transition, Nuclear force, Rotational temperature
Abstract

The experimental data emerging from the fluctuation analysis of the rotational γ-decay are used to provide evidence for three regimes in the rotational spectrum. Namely discrete bands, fragmented transitions and rotational damping. The mechanisms which are expected to be at work in the damping of rotational motion are briefly reviewed and a parallel is made with the relaxation of giant resonances, focusing on the interplay of mean field (average) effects and of chaotic (fluctuation) behaviour. A simple, yet accurate model of rotational damping where chaotic behaviour emerges from effective, though realistic, two-body interactions acting among unperturbed rotational bands indicates the possibility of obtaining novel insight on the nuclear structure, through the study of rotational motion. In particular, the onset of chaos can be related to the high-multipole components of the nuclear force which are not able to generate mean field effects.

Published
1993

287. Two and three dimensional gamma ray correlations in rotational nuclei

Author

P. Rasmussen, Masayuki Matsuo, D.C. Radford, S. Leoni, B. Herskind, N. Nica, and Thomas Døssing

Subjects
Physics, Nuclear and High Energy Physics, Transition strength, Rotation around a fixed axis, Gamma ray, Nuclear structure, Rotational transition, Rotational temperature, Atomic physics, Rotational frequency, Spectral line
Abstract

Several new methods for the study of nuclear structure at low temperature are reviewed. The methods analyze the fluctuations of the intensity of E γ 1 · E γ 2 spectra, and the shape and width Γ rot of the correlated patterns with different characteristics of the rotational motion in cold and warm nuclei. New results are given for the rotational damping width, and the number of 2-step-paths below and above U 0 ≈ 800 keV, considered to be the energy of the borderline between undamped and damped rotational motion. The rotational damping width Γ rot is studied as function of rotational frequency for selected regions of entry states in 163 Tm , and found to be rather constant ≈ 80 keV, significantly smaller than current theoretical predictions. The fluctuation analysis supports the damping picture in general, and confirms that a strong branching of the transition strength for each step in the E2 cascades exists at high spin. This can be taken as evidence for damping of the rotational motion in warm nuclei.

Published
1993

288. Fluctuation analysis of the rotational motion of excited nuclei

Author

Thomas Døssing, S. Leoni, Enrico Vigezzi, B. Herskind, and Masayuki Matsuo

Subjects
Physics, Nuclear and High Energy Physics, Excited state, Rotation around a fixed axis, Rotational transition, Atomic physics, Rotational partition function, Spectral line
Abstract

The structure of excited rotational bands in well deformed nuclei is discussed. It is shown how fluctuations of 2-dimensional energy-energy γ-ray spectra can give quite detailed information about both the region of discrete bands and the region of rotational damping.

Published
1993

289. Lifetime measurements of excited states in neutron-richAr44,46populated via a multinucleon transfer reaction

Author

E. Grodner, Suzana Szilner, A. M. Bizzeti-Sona, S. M. Lenzi, E. Sahin, S. Leoni, Sibel Zehra Aydin, P. G. Bizzeti, A. Gottardo, G. de Angelis, J. F. Smith, P. J. R. Mason, P. T. Wady, A. Dewald, G. Montagnoli, C. A. Ur, D. R. Napoli, A. M. Stefanini, L. Angus, E. Farnea, Fernando Scarlassara, A. Obertelli, F. C. L. Crespi, D. Steppenbeck, R. Silvestri, A. Goergen, M. Górska, G. Benzoni, T. Pawłat, J. J. Valiente-Dobón, S. Lunardi, P. Boutachkov, D. Montanari, Alejandro Algora, T. Pissulla, W. Królas, D. Mengoni, J. Wrzesiński, E. Fioretto, D. Bazzacco, Berta Rubio, G. Pollarolo, A. Gadea, F. Recchia, R. Orlandi, A. M. Howard, L. Corradi, and R. Broda

Subjects
Baryon, Nuclear reaction, Physics, Nuclear and High Energy Physics, Excited state, Hadron, Elementary particle, Neutron, Coulomb excitation, Atomic physics, Nucleon
Abstract

Lifetimes of low-lying excited states of the neutron-rich $^{44,46}\mathrm{Ar}$ nuclei, populated via multinucleon transfer reactions, are measured by means of the differential recoil distance Doppler shift method. The extracted electromagnetic transition probabilities are compared with previous intermediate-energy Coulomb-excitation measurements and with large-scale shell-model calculations. The increase in the deduced $B$($E2;{2}^{+}\ensuremath{\rightarrow}{0}^{+}$) transition probability from $^{44}\mathrm{Ar}$ to the closed-shell nucleus $^{46}\mathrm{Ar}$ contradicts the earlier results of Coulomb-excitation experiments. Shell-model calculations using different effective interactions agree with the new measured values.

Published
2010

290. Evolution of the Ar isotopic chain: the N=28 shell gap south of Ca-48

Author

S. Aydin, G. Montagnoli, A. Goergen, F. C. L. Crespi, E. Farnea, T. Pissulla, L. Corradi, F. Recchia, A. M. Bizzeti-Sona, E. Fioretto, Berta Rubio, P. G. Bizzeti, S. Leoni, P. T. Wady, A. Gadea, T. Pawłat, Fernando Scarlassara, C. A. Ur, A. M. Stefanini, E. Grodner, J. J. Valiente-Dobón, E. Sahin, W. Królas, R. Broda, S. M. Lenzi, A. Dewald, A. Gottardo, J. Wrzesiński, J. F. Smith, Suzana Szilner, D. Mengoni, D. R. Napoli, L. Angus, G. Pollarolo, P. Mason, A. Algora, S. Lunardi, D. Montanari, G. Benzoni, G. de Angelis, A. Obertelli, and D. Bazzacco

Subjects
Physics, Novel technique, Nuclear and High Energy Physics, Isotope, Spectrometer, multinucloen transfer reactions, recoil distance doppler shift method, PRISMA-CLARA, argon isotopes, 010308 nuclear & particles physics, Shell (structure), 7. Clean energy, 01 natural sciences, symbols.namesake, Recoil, Chain (algebraic topology), Excited state, 0103 physical sciences, symbols, Atomic physics, 010306 general physics, Nuclear Experiment, Doppler effect
Abstract

The lifetimes of the first excited states of the Z=18, 44Ar and 46Ar isotopes have been determined using a novel technique that combines the Recoil Distance Doppler Shift method, with the CLARA-PRISMA spectrometers for Multinucleon Transfer Reactions. The B(E2) values extracted for the 2+ to 0+ transitions in both nuclei, as well as for higher excited states in 44Ar, are discussed and compared with the available experimental results and with the new large-scale shell-model calculations.

Published
2010

291. Quasi-elastic reactions : a survey on recent results

Author

S. Szilner, L. Corradi, C. A. Ur, G. Pollarolo, A. M. Stefanini, S. Beghini, S. Courtin, E. Farnea, E. Fioretto, A. Gadea, F. Haas, D. Jelavić-Malenica, D. Lebhertz, S. M. Lenzi, S. Leoni, S. Lunardi, N. M. Marginean, R. Marginean, P. Mason, D. Mengoni, G. Montagnoli, D. Montanari, D. R. Napoli, F. Recchia, R. Silvestri, E. Sahin, M.-D. Salsac, N. Soić, F. Scarlassara, J. J. Valiente-Dobón, Yu. E. Penionzhkevich, S. M. Lukyanov, Penionzhkevich, Yu. E., and Lukyanov, S.M.

Subjects
Physics, Nuclear physics, Nuclear reaction, Spectrometer, Reaction dynamics, Electric field, binary reactions, large solid angle magnetic spectrometer, reaction dynamics, Nuclear structure, Solid angle, Coulomb barrier, Coulomb blockade, Nuclear Experiment
Abstract

Binary reactions at energies close to the Coulomb barrier received recently a significant boost thanks to the advent of the large solid angle magnetic spectrometer PRISMA coupled to the gamma array CLARA. In the present paper different aspects of the recent results of nuclear structure and reaction dynamics will be presented, focusing more closely on the reaction mechanism.

Published
2010

292. Study of collisions of the radioactive $^{24}$Ne beam at 7.9 MeV/u on $^{208} $Pb

Author

G. Benzoni, F. Azaiez, G. I. Stefan, S. Franchoo, S. Battacharyya, R. Borcea, A. Bracco, L. Corradi, D. Curien, G. De France, Zs. Dombradi, E. Fioretto, S. Grevy, F. Ibrahim, S. Leoni, D. Montanari, G. Mukherjee, G. Pollarolo, N. Redon, P. H. Regan, C. Schmitt, G. Sletten, D. Sohler, M. Stanoiu, S. Szilner, D. Verney, Institut de Physique Nucléaire d'Orsay (IPNO), 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), Grand Accélérateur National d'Ions Lourds (GANIL), 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), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), SPIRAL, 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), 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), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Radioactive ion beams, Nuclear and High Energy Physics, Ion beam, 010308 nuclear & particles physics, Hadron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Collision, 01 natural sciences, Nuclear physics, Angular distribution, 0103 physical sciences, Physics::Accelerator Physics, Nuclear fusion, grazing collsions, 24Ne beam, VAMOS, GRAZING model, Atomic physics, Nuclear Experiment, 010306 general physics, Spiral, Beam (structure)
Abstract

Expérience GANIL, VAMOS-EXOGAM; Cross-sections of the main reaction channels for the collision 24Ne + 208Pb at 7.9MeV/u were studied using the radioactive ion beam delivered by the SPIRAL facility and the VAMOS-EXOGAM experimental set-up. Angular distributions for the elastic and inelastic channels were extracted, together with distributions for the +1n and −1p channels. A comprehensive description of the present data is made within the GRAZING model approach.

Published
2010

293. Spin-alignment and g-factor measurement of the I(pi)=12(+) isomer in (192)Pb produced in the relativistic-energy fragmentation of a (238)U beam

Author

F. Becker, S. K. Chamoli, P. Bednarczyk, S. Mallion, W. Prokopowicz, J. M. Daugas, B. Million, W. Mȩczyński, E. Werner-Malento, A. Saltarelli, S. Chmel, M. Hass, A. Krasznahorkay, A. Maj, L. Caceres, Gerda Neyens, M. Ionescu-Bujor, D. Montanari, I. Kojuharov, P. Detistov, S. Brambilla, J. Gerl, F. Camera, P. Doornenbal, S. Pietri, M. Pfützner, M. Kmiecik, H. J. Wollersheim, Norio Saito, R. Lozeva, O. Wieland, L. Atanasova, J. Jolie, G. Ilie, J. Grȩbosz, G. S. Simpson, S. Myalski, K. H. Maier, M. Ciemała, G. Lo Bianco, Georgi P. Georgiev, N. Blasi, Dirk Rudolph, T. Saito, M. Lach, F. C. L. Crespi, Robert Hoischen, Zs. Podolyák, D. L. Balabanski, M. Ziȩbliński, N. Vermeulen, C. M. Petrache, K. Mazurek, M. Górska, A. Bracco, K. A. Gladnishki, S. Lakshmi, G. Benzoni, S. Leoni, R. Kulessa, H. Grawe, J. Styczen, DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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), Institut Laue-Langevin (ILL), and ILL

Subjects
Physics, Nuclear and High Energy Physics, Magnetic moment, NUCLEI, 010308 nuclear & particles physics, Relativistic energy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], FISSION, 01 natural sciences, 7. Clean energy, LISE, Separation process, SEPARATORS, GSI, Fragmentation (mass spectrometry), MOMENTS, 0103 physical sciences, Pi, ISOTOPES, Atomic physics, 010306 general physics, Nuclear Experiment
Abstract

The feasibility of measuring g -factors using the TDPAD method applied to high-energy, heavy fragmentation products is explored. The 2623keV $\ensuremath I^{\pi}=12^+$ isomer in 192Pb with $ \tau$ = 1.57 μs has been produced using the fragmentation of a 1A GeV 238U beam. The results presented demonstrate for the first time that such heavy nuclei produced in a fragmentation reaction with a relativistic beam are sufficiently well spin-aligned. Moreover, the rather large value of the alignment, 28(10)% of the maximum possible, is preserved during the separation process allowing the determination of magnetic moments. The measured values of the lifetime, $ \tau$ = 1.54(9) μs, and the g -factor, g = - 0.175(20) , agree with the results of previous investigations using fusion-evaporation reactions.

Published
2010

295. Heteropterys sericea

Author

L. S. Leoni, L. S. Leoni, L. S. Leoni, and L. S. Leoni

Abstract

Angiosperms, http://name.umdl.umich.edu/IC-HERB00IC-X-1531829%5DMICH-V-1531829, https://quod.lib.umich.edu/cgi/i/image/api/thumb/herb00ic/1531829/MICH-V-1531829/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. Some materials may be protected by copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, please contact the Herbarium professional staff: herb-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu., https://www.lib.umich.edu/about-us/policies/copyright-policy

Published
1994

296. Heteropterys trigoniifolia

Author

L. S. Leoni, L. S. Leoni, L. S. Leoni, and L. S. Leoni

Abstract

Angiosperms, http://name.umdl.umich.edu/IC-HERB00IC-X-1532072%5DMICH-V-1532072, https://quod.lib.umich.edu/cgi/i/image/api/thumb/herb00ic/1532072/MICH-V-1532072/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. Some materials may be protected by copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, please contact the Herbarium professional staff: herb-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu., https://www.lib.umich.edu/about-us/policies/copyright-policy

Published
1994

297. Tetrapterys phlomoides

Author

L. S. Leoni, L. S. Leoni, L. S. Leoni, and L. S. Leoni

Abstract

Angiosperms, http://name.umdl.umich.edu/IC-HERB00IC-X-1545253%5DMICH-V-1545253, https://quod.lib.umich.edu/cgi/i/image/api/thumb/herb00ic/1545253/MICH-V-1545253/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. Some materials may be protected by copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, please contact the Herbarium professional staff: herb-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu., https://www.lib.umich.edu/about-us/policies/copyright-policy

Published
1994

298. Tetrapterys mucronata

Author

L. S. Leoni, L. S. Leoni, L. S. Leoni, and L. S. Leoni

Abstract

Angiosperms, http://name.umdl.umich.edu/IC-HERB00IC-X-1545008%5DMICH-V-1545008, https://quod.lib.umich.edu/cgi/i/image/api/thumb/herb00ic/1545008/MICH-V-1545008/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. Some materials may be protected by copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, please contact the Herbarium professional staff: herb-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu., https://www.lib.umich.edu/about-us/policies/copyright-policy

Published
1994

299. Niedenzuella lucida

Author

L. S. Leoni, L. S. Leoni, L. S. Leoni, and L. S. Leoni

Abstract

Angiosperms, http://name.umdl.umich.edu/IC-HERB00IC-X-1533735%5DMICH-V-1533735, https://quod.lib.umich.edu/cgi/i/image/api/thumb/herb00ic/1533735/MICH-V-1533735/!250,250, The University of Michigan Library provides access to these materials for educational and research purposes. Some materials may be protected by copyright. If you decide to use any of these materials, you are responsible for making your own legal assessment and securing any necessary permission. If you have questions about the collection, please contact the Herbarium professional staff: herb-dlps-help@umich.edu. If you have concerns about the inclusion of an item in this collection, please contact Library Information Technology: libraryit-info@umich.edu., https://www.lib.umich.edu/about-us/policies/copyright-policy

Published
1994

300. Fluctuation analysis of rotational decay from excited nuclei

Author

B. Herskind, A. Ikeda, A. Bracco, J.C. Lisle, S. Leoni, Ricardo A. Broglia, Masayuki Matsuo, Enrico Vigezzi, and Thomas Døssing

Subjects
Physics, Rare earth nuclei, Mathematical model, Isotope, Stable isotope ratio, Excited state, Gamma ray, General Physics and Astronomy, Atomic physics
Abstract

A statistical method to analyze the gamma decay of excited, rapidly rotating nuclei is presented. It is based on the fact that the cooling path of these systems goes through regions of both suppressed and enhanced fluctuations typical of large and low level density, respectively. The method is applied to the study of the high-spin quasicontinuum of $^{167,168}\mathrm{Yb}$.

Published
1992

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