Thesis Collection
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Browsing by Subject "22 Física"
Now showing items 1-20 of 77
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A clear signature of the breakup modes for 9Be on a proton target at 5.6 MeV/nucleon
Pakou, A.; Acosta Sánchez, Luis Armando
; Martel Bravo, Ismael; Sánchez Benítez, Ángel Miguel; Trzcinska, A. (IOP Publishing, 2020)
The breakup of 9Be is studied via an inelastic scattering experiment on a proton target at 5.6 A MeV in inverse kinematics. Two of the three cluster constituents (α and α) as well as the proton target recoil were recorded ... -
A general methodology to determine natural radionuclides by well-type HPGe detectors
Barba Lobo, Alejandro; Gutiérrez de San Miguel Herrera, Enrique; Lozano Bermejo, Rafael Luis; Bolívar Raya, Juan Pedro (Elsevier, 2021)
This work aims to determine natural radionuclides (210Pb, 228,226Ra, 234,228Th and 40K) in NORM samples by well-type HPGe detectors because they are of vital importance in studies on environmental samples. For this, a novel ... -
A practical and general methodology for efficiency calibration of coaxial Ge detectors
Barba Lobo, Alejandro; Bolívar Raya, Juan Pedro (Elsevier, 2022-05-06)
The correct determination of artificial and natural radionuclides like 152Eu, 137,134Cs, 60,57Co, etc., and 234,228Th, 228,226Ra, 210Pb and 40K, respectively, is essential for many environmental science fields. For this, ... -
A Practical Procedure to Determine Natural Radionuclides in Solid Materials from Mining
There are many regulations related to the radiological control of NORMs (Naturally Occurring Radioactive Materials) in activities such as mining, industry, etc. Consequently, it is necessary to apply fast and accurate ... -
A Review of the Commercial Uses of Sulphate Minerals from the Titanium Dioxide Pigment Industry: The Case of Huelva (Spain)
Gázquez González, Manuel Jesús; Contreras Llanes, Manuel; Pérez Moreno, Silvia María; Guerrero Márquez, José Luis; Casas Ruiz, Melquiades; Bolívar Raya, Juan Pedro (MDPI, 2021)
This study was focused on the historical evolution of the waste management policy carried out by the Spanish industry devoted to titanium dioxide pigments manufacturing for minimising its environmental impact. This challenge ... -
A simple and precise methodology to determine particulate matter mass in atmospheric filters; validation and application cases
Barba Lobo, Alejandro; Gutiérrez Álvarez, Isidoro; Adame Carnero, José Antonio; Bolívar Raya, Juan Pedro (Elsevier, 2022-11-01)
In the past decades, particulate matter (PM) measurements have been used extensively in atmospheric sciences, as it allows studying the evolution of tracers for different atmospheric processes and the effects of atmospheric ... -
Accessing pion GPDs through the Sullivan process: is it feasible?
Morgado Chávez, José Manuel; Bertone, Valerio; Defurne, Maxime; Soto, Feliciano de; Mezrag, Cédric; Moutarde, Hervé; Rodríguez Quintero, José; Segovia, Jorge (Sociedad Mexicana de Física, 2022)
Describing hadronic structure is one of the most intriguing problems in physics. In this respect, generalized parton distributions (GPDs) constitute an outstanding tool, allowing to draw “three dimensional pictures” of ... -
Accessing the Pion 3D Structure at US and China Electron-Ion Colliders
Morgado Chávez, José Manuel; Bertone, Valerio; Soto Borrero, Feliciano Carlos de; Defurne, Maxime; Mezrag, Cédric; Moutarde, Hervé; Rodríguez Quintero, José; Segovia, Jorge (American Physical Society, 2022-05)
We present the first systematic feasibility study of accessing generalized parton distributions of the pion at an electron-ion collider through deeply virtual Compton scattering. Relying on state-of-the-art models for ... -
Algebraic vibrational description of the symmetric isotopologues of CO2: (13)C(16)O2 , (12)C(18)O2 and (12)C(17)O2
Bermúdez Montaña, Marisol; Rodríguez Arcos, Marisol; Carvajal Zaera, Miguel; Lemus, Renato (Elsevier, 2022)
We present a polyad-conserving local model applied to the vibrational excitations of symmetric isotopologues of carbon dioxide. The description is carried out in the framework of local internal coordinates where the ... -
Behaviour of heavy metals and natural radionuclides in the mixing of phosphogypsum leachates with seawater
Guerrero Márquez, José Luis; Pérez Moreno, Silvia María; Gutiérrez Álvarez, Isidoro; Gázquez González, Manuel Jesús; Bolívar Raya, Juan Pedro (Elsevier, 2021-01)
Phosphogypsum (PG) is disposed worldwide in large stacks usually placed in coastal zones, as in the case of Huelva (SW of Spain), where around 100 Mt of PG are stored on the salt marshes of the Tinto River estuary covering ... -
Concerning pion parton distributions
Cui, Zhu-Fang; Ding, M.; Morgado Chávez, José Manuel; Raya, Khépani; Binosi, Daniele; Chang, L.; Papavassiliou, J.; Roberts, Craig D.; Rodríguez Quintero, José; Schmidt, S. M. (Springer, 2022-01)
Analyses of the pion valence-quark distribution function (DF), uπ (x; ζ ), which explicitly incorporate the behaviour of the pion wave function prescribed by quantum chromodynamics (QCD), predict uπ (x 1; ζ ) ∼ (1 − ... -
Cosmology of an Axion-Like Majoron
Cuesta, A. J.; Gómez Santamaría, Mario Emilio; Illana Calero, José Ignacio; Masip Mellado, Manuel (Institute of Physics, 2022)
We propose a singlet majoron model that defines an inverse seesaw mechanism in the v sector. The majoron phi has a mass m(phi) approximate to 0.5 eV and a coupling to the tau lepton similar to the one to neutrinos. In the ... -
Digital quantum simulation of an extended Agassi model: Using machine learning to disentangle its phase-diagram
Sáiz, Álvaro; García Ramos, José Enrique; Arias Carrasco, José Miguel; Lamata, Lucas; Pérez Fernández, Pedro (American Physical Society, 2022)
A digital quantum simulation for the extended Agassi model is proposed using a quantum platform with eight trapped ions. The extended Agassi model is an analytically solvable model including both short range pairing and ... -
Direct processes for the systems 7Be,8B + 208Pb at Coulomb barrier energies
Mazzocco, M.; Marquínez Durán, Gloria; Martel Bravo, Ismael; Zhang, H. Q (IOP Publishing, 2020)
The elastic scattering process for the nuclear reactions induced by the Radioactive Ion Beams 7Be and 8B on a 208Pb target was measured for the first time in the energy range around the Coulomb barrier. Extensive theoretical ... -
Empirical Determination of the Pion Mass Distribution
Xu, Yinzhen; Raya, Khépani; Cui, Zhu-Fang; Roberts, Craig D.; Rodríguez Quintero, José (Cornell University, 2023)
Existing pion+nucleus Drell-Yan and electron+pion scattering data are used to develop ensembles of model-independent representations of the pion generalised parton distribution (GPD). Therewith, one arrives at a data-driven ... -
Equilibration time in many-body quantum systems
Lezama, Talía L. M.; Torres Herrera, E. Jonathan; Pérez Bernal, Francisco; Bar Lev, Yevgeny; Santos, Lea F. (American Physical Society, 2021)
Isolated many-body quantum systems quenched far from equilibrium can eventually equilibrate, but it is not yet clear how long they take to do so. To answer this question, we use exact numerical methods and analyze the ... -
Evolution of octupole deformation and collectivity in neutron-rich lanthanides
Nomura, Kosuke; Rodríguez-Guzmán, Rayner; Robledo, Luis Miguel; García Ramos, José Enrique; Hernández, N. C. (American Physical Society, 2021)
The onset of octupole deformation and its impact on related spectroscopic properties is studied in even-even neutron-rich lanthanide isotopes Xe, Ba, Ce, and Nd with neutron number 86⩽N⩽94. Microscopic input comes from the ... -
Evolution of single-particle structure near the N = 20 island of inversion
MacGregor, P. T.; Martel Bravo, Ismael; Yang, J. (American Physical Society, 2021)
The single-particle properties of Mg29 have been investigated via a measurement of the Mg28(d,p)Mg29 reaction, in inverse kinematics, using the ISOLDE Solenoidal Spectrometer. The negative-parity intruder states from the ... -
Excited lepton triplet contribution to electroweak observables at one loop level
Rehman, M.; Gómez Santamaría, Mario Emilio; Panella, O. (SpringerOpen, 2021)
In this paper, we present the one-loop radiative corrections to the electroweak precision observable ρ com ing from the IW = 1 multiplet excited leptons. We have cal culated the couplings of the exotic lepton triplet to ... -
Excited-state quantum phase transition and the quantum speed limit time
Wang, Qian; Pérez Bernal, Francisco (American Physical Society, 2019)
We investigate the influence of an excited-state quantum phase transition on the quantum speed limit time of an open quantum system. The system consists of a central qubit coupled to a spin environment modeled by a ...
