Departament de Física i Enginyeria Nuclear (fins octubre de 2015)

Recent Submissions

Mesógenos alquiloxicianobifenilos : aspectos teóricos y experimentales en las transiciones de fase SmA-N y N-I 

Cusmin, Paul (Date of defense: 2009-03-11)

The work presented here has been focused, basically, on the study of the SmA-N and N-I phase transitions of a group of liquid crystals, the alkyloxycyanobiphenyls (nOCB), in which, for some of them, as it is the case of ...

Coupled dynamical processes in bacteria 

Dies Miracle, Marta (Date of defense: 2015-10-27)

The main object of this Thesis is the study of the dynamical coupling between cellular processes, and how this coupling gives rise to a well-defined behavior in the presence of non-linearities and noise. Cell functioning ...

First measurement of beta-decay half-lives and neutron emission probabilities in several isotopes beyond N = 126 

Caballero Folch, Roger (Date of defense: 2015-06-05)

In this work beta-decay half-lives and neutron-emission probability values have been experimentally determined for first time in several nuclei beyond the neutron-shell closure at N=126. To this aim the accelerator complex ...

Scaling-up methodology : a systematical procedure for qualifying NPP nodalizations. Application to the OECD/NEA ROSA-2 and PKL-2 Counterpart test 

Martínez Quiroga, Victor (Date of defense: 2014-11-17)

System codes along with necessary nodalizations are valuable tools for thermal hydraulic safety analysis. Qualifying both codes and nodalizations is an essential step prior to their use in any significant study involving ...

Shaping of light beams with photonic crystals : spatial filtering, beam collimation and focusing 

Maigyte, Lina (Date of defense: 2014-07-01)

The research developed in the framework of this PhD thesis is a theoretical, numerical and experimental study of light beam shaping (spatial filtering, beam collimation and focusing) in the visible frequency range using ...

Experimental study of feedback-induced dynamics in semiconductor lasers : from symbolic analysis to subwavelength position sensing 

Aragoneses Aguado, Andrés (Date of defense: 2014-06-18)

The aim of this thesis is the study of the dynamics induced by optical feedback in semiconductor lasers. This study aims, on the one hand, to improve our knowledge of stocahstic complex systems, and on the other hand, to ...

IFMIF accelerator facility RAMI analyses in the engineering design phase 

Bargalló Font, Enric (Date of defense: 2014-05-09)

The planned International Fusion Materials Irradiation Facility (IFMIF) has the mission to test and qualify materials for future fusion reactors. IFMIF will employ the deuteron-lithium stripping reaction to irradiate the ...

Colour and technology in historic decorated glazes and glasses 

Molina Giralt, Glòria (Date of defense: 2014-05-09)

Historical decorated glass and glazed ceramics are studied with the object to determine the technology of production and to relate it with the optical properties (colour, shine, opacity). Four different case of study are ...

Exploiting nonlinearity and noise in optical tweezers and semiconductor lasers : from resonant damping to stochastic logic gates and extreme pulses 

Perrone, Sandro (Date of defense: 2014-02-07)

This thesis is focused on the study of stochastic and nonlinear dynamics in optical systems. First, we study experimentally the dynamics of a Brownian nanometer particle in an optical trap subjected to an external forcing. ...

Development of a simulation tool for MHD flows under nuclear fusion conditions 

Mas de les Valls Ortiz, Elisabet (Date of defense: 2011-12-01)

In Nuclear Fusion Technology, MHD flows can be encountered in liquid metal (LM) breeding blankets, the part of a fusion reactor where tritium, one of the fusion fuels, is to be produced. There are several types of LM ...

222Rn as a tracer for air mass transport characterization at 100-m-high tower in the south-west Spanish coast 

Grossi, Claudia (Date of defense: 2012-03-30)

Es los últimos años se han llevado a cabo importantes trabajos de investigación, tomando el gas radón como elemento de evaluación en modelos de transporte atmosférico y así estimar el flujo de partículas. Además la utilización ...

Design and higher order optimisation of final focus systems for linear colliders 

Marín Lacoma, Eduardo (Date of defense: 2012-12-21)

The accelerator and particle physics communities are considering a lepton Linear Collider LC as the most appropriate machine to carry out high precision particle physics research in the TeV energy regime. The Compact Linear ...

Evaluación de procedimientos desde la perspectiva probabilistica para la seguridad nuclear: aplicación a un reactor Westinghouse PWR 

Martínez Cid, Manuel (Date of defense: 2012-11-09)

Probabilistic Risk Assessment for the evaluation of procedures in the Nuclear Safety field. Application to a pressurized water reactor. The studies contained in this PhD are involved in the Nuclear Safety research field. ...

Dynamical behavior of delay-coupled semiconductor lasers 

Martínez González, Cristina (Date of defense: 2009-01-30)

In this Thesis we have presented the results of a set of experimental investigations of the dynamics of delay-coupled semiconductor lasers. The characterization of these systems includes topics such as the processing of ...

AxisSPH:devising and validating an axisymmetric smoothed particle hydrodynamics code 

Relaño Castillo, Antonio (Date of defense: 2012-06-06)

A two-dimensional axisymmetric implementation of the smoothed particle hydrodynamics (SPH) technique, called for short AxisSPH, has been described in this thesis, along with a number of basic tests and realistic applications. ...

Caracterización de aerosoles radiactivos en la ciudad de Barcelona 

González de Perosanz, Miguel Àngel (Date of defense: 2012-03-19)

This research work has been developed in order to contribute to the knowledge of radioactive aerosol characteristics and their behaviour in the atmosphere. The study was carried out in the city of Barcelona. The Instituto ...

Monte Carlo and experimental small-field dosimetry applied to spatially fractionated synchrotron radiotherapy techniques 

Martínez Rovira, Immaculada (Date of defense: 2012-03-12)

Two innovative radiotherapy (RT) approaches are under development at the ID17 Biomedical Beamline of the European Synchrotron Radiation Facility (ESRF): microbeam radiation therapy (MRT) and minibeam radiation therapy ...

Study of thermal transitions in polymers by a multifrequency modulated DSC technique 

Fraga Rivas, Iria (Date of defense: 2010-02-26)

Differential Scanning Calorimetry (DSC) is one of the most widely used thermal analysis techniques for the study of transitions and relaxation processes in polymers and also in other materials. It measures the heat flow ...

Multi-dimensional simulations of mixing in classical novae 

Casanova Bustamante, Jordi (Date of defense: 2011-11-03)

Classical nova explosions are stellar explosions that take place in close binary systems with an energy release only exceeded by gamma-ray bursts and supernova explosions. Matter from the white dwarf flows through the inner ...

Dynamics in orientationally disordered solids 

Martínez García, Julio César (Date of defense: 2011-07-15)

The key features of dynamics of ultraslowing glass forming systems are their universality in diversity. Its origin is recognized as one of the greatest challenges of condensed matter physics and materials engineering in ...