Browsing DFA  Artículos by Title
Now showing items 120 of 217

13C—methyl formate : observations of a sample of high mass starforming regions including Orion—KL and spectroscopic characterization
(American Astronomical Society, 2014)We have surveyed a sample of massive starforming regions located over a range of distances from the Galactic centre for methyl formate, HCOOCH3, and its isotopologues H13COOCH3 and HCOO13CH3. The observations were carried ... 
7Be and 8Breaction dynamics at Coulomb barrier energies
(EDP Sciences:, 2016)We investigated the reaction dynamics induced by the Radioactive Ion Beams 7Be and 8B on a 208Pb target at energies around the Coulomb barrier. The two measurements are strongly interconnected, being 7Be (Sα = 1.586 ... 
8 B + 208 Pb Elastic Scattering at Coulomb Barrier Energies
(EDP Sciences, 201701)The scattering process of weaklybound nuclei at Coulomb barrier energies provides deep insights on the reaction dynamics induced by exotic nuclei. Within this framework, we measured for the first time the scattering ... 
A Nakanishibased model illustrating the covariant extension of the pion GPD overlap representation and its ambiguities
(Elsevier, 201803)A systematic approach for the model building of Generalized Parton Distributions (GPDs), based on their overlap representation within the DGLAP kinematic region and a further covariant extension to the ERBL one, is applied ... 
Ab initio potential energy surface, electric dipole moment, polarizability tensor, and theoretical rovibrational spectra in the electronic ground state of 14NH3
(Elsevier, 200805)We report the calculation of a sixdimensional CCSD(T)/augccpVQZ potential energy surface for the electronic ground state of NH+3 together with the corresponding CCSD(T)/augccpVTZ dipole moment and polarizability ... 
Ab initio spectroscopic characterization of the radical CH3OCH2 at low temperatures
(AIP Publishing, 2019)Spectroscopic and structural properties of methoxymethyl radical (CH3OCH2, RDME) are determined using explicitly correlated ab initio methods. This radical of astrophysical and atmospheric relevance has not been fully ... 
Accretiondisc precession in UX Ursae Majoris
(Oxford University Press, 2016)We report the results of a long campaign of timeseries photome try on the novalike variable UX Ursae Majoris during 2015. It spanned 150 nights, with ~ 1800 h ours of coverage on 121 separate nights. ... 
An accurate density functional theory for the vaporliquid interface of associating chain molecules based on the statistical associating fluid theory for potentials of variable range
(American Institute of Physics, 2004)A Helmholtz free energydensity functional is developed to describe the vaporliquid interface of associating chain molecules. The functional is based on the statistical associating fluid theory with attractive potentials ... 
Accurate spectroscopic characterization of ethyl mercaptan and dimethyl sufide isotopologues : a rute toward their astrophysical detection
(American Astronomical Society, 2014)Using stateoftheart computational methodologies, we predict a set of reliable rotational and torsional parameters for ethyl mercaptan and dimethyl sulfide monosubstituted isotopologues. This includes rotational, quartic, ... 
An algebraic approach applied to the determination of the polarizability in CO2
(IOP Publishing, 2014)A local algebraic approach to describe vibrational excitations of molecules presenting both local and normal mode behaviors is presented. This approach allows the connection with configuration space to be established. ... 
Algebraic approach to twodimensional systems : shape phase transitions, monodromy, and thermodynamic quantities
(American Physical Society, 2008)We analyze shape phase transitions in twodimensional algebraic models. We apply our analysis to linearto bent transitions in molecules and point out what observables are particularly sensitive to the transition ... 
Algebraic theory of endohedrally confined diatomic molecules: Application to H2@C60
(American Physical Society, 2016)A simple and yet powerful approach for modeling the structure of endohedrally confined diatomic molecules is introduced. The theory, based on a u(4)⊕u(3) dynamical algebra, combines u(4), the vibron model dynamical algebra, ... 
An accurate density functional theory for the vaporliquid interface of chain molecules based on the statistical associating fluid theory for potentials of variable range for Mie chainlike fluids
(Royal Society of Chemistry, 2019)A new Helmholtz free energy density functional is presented to predict the vaporliquid interface of chainlike molecules. The functional is based on the last version of the statistical associating fluid theory for ... 
An extended Agassi model: algebraic structure, phase diagram, and large size limit
(IOP Publishing, 2019)The Agassi model (Agassi 1968 Nucl. Phys. A 116 49) is a schematic twolevel model that involves pairing and monopole–monopole interactions. It is, therefore, an extension of the well known Lipkin–Meshkov–Glick model (Lipkin ... 
Analytical transformed harmonic oscillator basis for continuum discretized coupled channels calculations
(American Physical Society, 2009)A new method for continuum discretization in continuumdiscretized coupledchannels calculations is proposed. The method is based on an analytic localscale transformation of the harmonicoscillatorwave functions proposed ... 
Anharmonicity effects in the bosonic U(2)SO(3) excitedstate quantum phase transition
(American Physical Society, 2010)We study the effect of the inclusion of the U(2) Lie algebra secondorder Casimir operator in a model Hamiltonian of the vibron model twodimensional limit. We extend previously published results, showing that the inclusion ... 
An Approach to Global Rovibrational Analysis Based on Anharmonic Ladder Operators: Application to Hydrogen Selenide (H80 2 Se)
(Elsevier, 201201)An algebraic approach to perform global rovibrational analysis of molecular spectra is presented. The approach combines the onedimensional limit of the vibron model with rotational degrees of freedom. The model is based ... 
BK Lyncis: the oldest old nova?... and a Bellwether for cataclysmic variable evolution
(Oxford University Press, 2013)We summarize the results of a 20year campaign to study the light curves of BK Lyncis, a novalike star strangely located below the 23 hour orbital period gap in the family of cataclysmic variables. Two apparent ... 
Breakup and neutrontransfer effects on 6He+206Pb elastic scattering below the Coulomb barrier
(American Physical Society, 2013)The elastic scattering and inclusive αparticle yield for the 6He + 206Pb system at an incident energy of 18 MeV, just below the nominal Coulomb barrier, have been measured. The αparticle yield at forward angles is also ... 
Characterization of a highlysegmented silicon prototype for the TRACE array
(EDP Sciences, 2014)In view of the construction of novel and highsensitive instrumentation for the emerging ISOL facilities new prototypes have being implemented and tested. The contri bution focuses at the investigation of the detection ...