DFAMN - Artículoshttps://hdl.handle.net/10481/314212024-03-29T15:26:18Z2024-03-29T15:26:18ZSemi-inclusive two-nucleon emission in (anti) neutrino charged current scattering within the relativistic mean field frameworkMartínez Consentino, Víctor LeopoldoCantizani, Araceli M.Amaro Soriano, José Enriquehttps://hdl.handle.net/10481/893552024-02-20T10:24:29ZSemi-inclusive two-nucleon emission in (anti) neutrino charged current scattering within the relativistic mean field framework
Martínez Consentino, Víctor Leopoldo; Cantizani, Araceli M.; Amaro Soriano, José Enrique
This paper delves into the distribution of semi-inclusive events involving the emission of two nucleons
in (anti) neutrino charged-current scattering. The analysis is conducted within the framework of relativistic
mean-field theory applied to nuclear matter. To quantify the likelihood of such semi-inclusive events occurring,
we employ a relativistic model of meson-exchange currents that aligns with the 2p2h inclusive cross section. The
outcomes are presented in terms of onefold and twofold integrated semi-inclusive cross sections. To highlight
disparities among the various emission channels, including proton-proton, neutron-proton, and neutron-neutron,
we compare them against a purely phase-space isotropic distribution within the center of mass of the two
nucleons. These comparisons reveal significant differences in the event distributions, shedding light on the
distinctive characteristics of each channel.
The work was supported by Grant No. PID2020-114767GB-I00 funded by MCIN/AEI/10.13039/501100011033; and by Grant No. FQM-225 funded by Junta de Andalucia.
Exploring Semi-Inclusive Two-Nucleon Emission in Neutrino Scattering: A Factorized Approximation ApproachMartínez Consentino, Víctor LeopoldoAmaro Soriano, José Enriquehttps://hdl.handle.net/10481/893542024-02-20T10:12:18ZExploring Semi-Inclusive Two-Nucleon Emission in Neutrino Scattering: A Factorized Approximation Approach
Martínez Consentino, Víctor Leopoldo; Amaro Soriano, José Enrique
The semi-inclusive cross-section of two-nucleon emission induced by neutrinos and antineutrinos is computed by employing the relativistic mean field model of nuclear matter and the dynamics of meson-exchange currents. Within this model, we explore a factorization approximation based on the product of an integrated two-hole spectral function and a two-nucleon cross-section averaged over hole pairs. We demonstrate that the integrated spectral function of the uncorrelated Fermi gas can be analytically computed, and we derive a simple, fully relativistic formula for this function, showcasing its dependency solely on both missing momentum and missing energy. A prescription for the average momenta of the two holes in the factorized two-nucleon cross-section is provided, assuming that these momenta are perpendicular to the missing momentum in the center-of-mass system. The validity of the factorized approach is assessed by comparing it with the unfactorized calculation. Our investigation includes the study of the semi-inclusive cross-section integrated over the energy of one of the emitted nucleons and the cross-section integrated over the emission angles of the two nucleons and the outgoing muon kinematics. A comparison is made with the pure phase-space model and other models from the literature. The results of this analysis offer valuable insights into the influence of the semi-inclusive hadronic tensor on the cross-section, providing a deeper understanding of the underlying nuclear processes.
Work supported by: Grant PID2020-114767GB-I00 funded by MCIN/AEI /10.13039
/501100011033; Junta de Andalucia (Grant No. FQM-225).
Neutronic assessment of the IFMIF-DONES HFTM specimen stack distributionÁlvarez Castro, IreneAnguiano Millán, MartaMota, FernandoHernández, RebecaQiu, Yuefenghttps://hdl.handle.net/10481/892492024-02-16T11:17:20ZNeutronic assessment of the IFMIF-DONES HFTM specimen stack distribution
Álvarez Castro, Irene; Anguiano Millán, Marta; Mota, Fernando; Hernández, Rebeca; Qiu, Yuefeng
IFMIF-DONES (International Fusion Materials Irradiation Facility- DEMO Oriented NEutron Source) is a neutron irradiation facility designed to collect data on material irradiation for the construction of demonstration fusion power plants.
This study focuses in investigate the effect of a realistic model of specimens being irradiated in HFTM in IFMIF-DONES, and its comparison with previous results with the homogeneous model. Neutron fluence rate, damage dose rates, and gas production have been calculated for the standard 20 × 5 cm² profile and a 10 × 5 cm² beam size. These calculations were performed for a deuteron beam with an energy of 40 MeV and a current of 125 mA. More realistic neutronics model gives very consistent DPA volumes with the previous. The main difference is a neutron slight streaming in the detailed one. The distribution of DPA shows irregular patterns depending on specimen location. This research highlights the significant role played by specimen distribution in enhancing the accuracy and reliability of dpa measurements within the IFMIF-DONES facility and the influence of the beam size.
This work has been supported by the European Union's FEDER program, IFMIF-DONES Junta de Andalucia's program at the Universidad de Granada SE21, by MCIN/AEI/10.13039/501100011033/FEDER, UE (PID2022-137543NB-I00) and has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 — EUROfusion). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them.
Center-of-mass momentum dependence of short-range correlations with the coarse-grained Granada potentialRodríguez Casalé, PalomaAmaro, José EnriqueRuiz Arriola, EnriqueRuiz Simo, Ignaciohttps://hdl.handle.net/10481/861492023-12-13T10:27:50ZCenter-of-mass momentum dependence of short-range correlations with the coarse-grained Granada potential
Rodríguez Casalé, Paloma; Amaro, José Enrique; Ruiz Arriola, Enrique; Ruiz Simo, Ignacio
The effect of the center-of-mass motion on the high-momentum distributions of correlated nucleon pairs is studied by solving the Bethe-Goldstone equation in nuclear matter with the Granada nucleon-nucleon potential. We show that this coarse-grained potential reduces the problem to an algebraic linear system of five (ten) equations for uncoupled (coupled) partial waves that can be easily solved. The corresponding relative wave functions of correlated pn, pp, and nn pairs are computed for different values of their center-of-mass (CM) momentum. We find that the pn pairs dominate the high-momentum tail of the relative momentum distribution, and that this only depends marginally on center-of-mass momentum. Our results provide further justification and agreement for the factorization approximation commonly used in the literature. This approximation assumes that the momentum distribution of nucleon pairs can be factorized as the product of the center-of-mass momentum distribution and the relative momentum distribution.
En la revista se ha publicado en acceso cerrado, no en acceso abierto.
Production of Fock Mixtures in Trapped Ions for Motional MetrologyDelakouras, AntonisRodríguez Rubiales, DanielCerrillo Moreno, Javierhttps://hdl.handle.net/10481/859122023-11-29T08:23:46ZProduction of Fock Mixtures in Trapped Ions for Motional Metrology
Delakouras, Antonis; Rodríguez Rubiales, Daniel; Cerrillo Moreno, Javier
We present a protocol to produce a class of non-thermal Fock state
mixtures in trapped ions. This class of states features a clear metrological advantage
with respect to the ground state, thus overcoming the standard quantum limit without
the need for full sideband cooling and Fock-state preparation on a narrow electronic
transition. The protocol consists in the cyclic repetition of red-sideband, measurement
and preparation laser pulses. By means of the Kraus map representation of the
protocol, it is possible to relate the length of the red sideband pulses to the specific
class of states that can be generated. With the help of numerical simulations, we
analyze the parametric regime where these states can be reliably reproduced.
J.C. acknowledges support from Ministerio de Ciencia, Innovación y Universidades
(Spain) (“Beatriz Galindo” Fellowship BEAGAL18/00081). D.R. acknowledges support
from Junta de Andalucía through the project P18-FR-3432.