EJERCICIOS RESUELTOS DE OSCILACIONES AMORTIGUADAS Y FORZADAS PDF

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Descargar evento actual:. Archivo de calendario del horario detallado. Por ello, es muy importante que mantenga estos enlaces en la privacidad y para uso exclusivamente personal. Choose Timezone. Specify a timezone. Dolores Cortina Universidade de Santiago de Compostela. The meeting venue will be at the Faculty of Chemistry. Opening 45m. There is worldwide consensus to reduce energy consumption and emissions of greenhouse gases in the atmosphere.

Correct planning and thorough insight into the complexities of energy systems are an absolute necessity before starting such a task, in order to avoid unnecessary disruptions in the economy and daily life of the citizens. The European Union has ambitious plans n this direction for the coming decades. However, there is no simple answer to the best way forward.

In the electricity sector emphasis is currently put on massive developments in renewable systems wind, solar, hydro, biomass,…. As wind and solar are main components, the consequences of the intermittency need to be fully understood.

Important components for a green electricity system dominated by intermittent sources are still lacking and developing these is challenging and will take time.

Therefore it is not justified to eliminate any of the non-renewable options in near future and future electricity policies.

The plans of the EU need also to be shaped in the context of worldwide greenhouse gas emissions and estimated future world energy needs. The effectiveness of green electricity policies implemented in the EU so far will be discussed using the example of the Germany. A last but very important remark is about the information for the general public. Unfortunately, the quality of public and political discussions on this subject is a matter of great concern, as these frequently lack reference to realistic numbers, or use numbers very selectively.

Even worse, critical discussions are very often simply ignored or rebuffed with unfounded black and white arguments. Given the importance of sufficient and high quality energy sources for the welfare of all citizens on this planet in the future, there is an important role for education.

This should be an important asset in order to arrive at a correctly defined and affordable sustainable future energy supply. Ponente : Prof. Josef Ongena. Coffee break and poster session 30m. The explanation of the nature and dynamics of visible matter present in the universe is one of the most successful theories in relativistic quantum physics.

The discovery of the Higgs Boson in marked the end of a very fruitful era as well as the start of much more uncertain times. If the theory of particle physics stands out for its simplicity and beauty the experimental program, based on gigantic accelerators and particle detectors, paved the way for what now has become almost the standard in science, the big science.

In this talk, I will present an overview the state of the art in the field of particle physics and the challenges ahead. It will provide world-unique accelerator and experimental facilities, allowing for a great variety of unprecedented forefront research in physics and applied sciences. FAIR is an international project with 10 partner countries and more than scientists and engineers from more than 50 countries involved in the planning and construction of the accelerators and associated experiments.

FAIR research focuses on the structure and evolution of matter on both a microscopic and a cosmic scale, bringing our Universe into one laboratory. In particular, FAIR with its four scientific pillars will expand the knowledge in various scientific fields beyond current frontiers, addressing the following: - The properties of the strong force and its role in shaping the basic building blocks of the visible world around us and in the evolution of the universe; - Test of symmetries and predictions of the Standard Models, as well as the search for physics beyond it; - The properties of matter under extreme conditions, at both the subatomic and the macroscopic scale of matter; and - Applications of high-intensity, high quality beams in research areas that provide the basis for, or indirectly address, issues of applied sciences and technology.

In particular FAIR will open a new era in nuclear astrophysics. The talk will introduce FAIR, its unique scientific Opportunities, and the status of the realization of the project. Paolo Giubelino. In this talk we give an overview of the Exterior Section. We will present our members, our main goals, the organized and planned activities, agreements with other scientific associations, and our future action plans.

It is dedicated to the production, study and research of nuclei far from stability. Exotic nuclei of most chemical elements are available for the study of nuclear structure, nuclear astrophysics, fundamental symmetries and atomic physics, as well as for applications in condensed-matter and life sciences. Since more than 15 years it offers the largest variety of post-accelerated radioactive beams in the world today.

In order to broaden the scientific opportunities beyond the reach of the present facility, the on-going HIE-ISOLDE High Intensity and Energy project will provide major improvements in energy range, beam intensity and beam quality.

Maria J. The correct description of the final relative abundances of heavy elements requires a accurate knowledge of delayed neutron emission probabilities Pxn of very neutron-rich nuclei [1]. Our current understanding of this nuclear decay mode lacks of enough experimental data [2]. Furthermore, the Pxn values are sensitive to the nuclear structure, and can be used as test of theoretical models [3].

The setup received the first radioactive beam of isotopes close to the doubly-magic 78 Ni in Autumn In this presentation we will report on the first results of this commissioning run, including an evaluation of the performance of the setup. Arcones and G. Martinez-Pinedo, Phys. C 83, ; [2] R. Mumpower et al. Rev C 94, ; [3] M. Madurga et al. Tarifeno-Saldivia et al. Davinson et al. Kubo et al. Ponente : Dr. During the last two decades there has been a substantial effort directed to gather information about the region around the neutron-rich Sn [1], the most exotic doubly-magic nucleus presently at reach.

Stringent tests of the models can be provided by the reduced electromagnetic transition probabilities connecting nuclear states. In this work we have used fast-timing and gamma spectroscopy to investigate five Sn nuclei, including the doubly magic Sn, the two neutron hole Sn and two-neutron particle Sn, and the one-neutron hole Sn and one-neutron particle Sn. The Sn isotopes were studied at the ISOLDE facility, where their excited states were populated in the beta-decay of In isomers, produced in a UCx target unit equipped with a neutron converter.

The setup incorporated a tape transport system to remove longer-lived activities. Indium isotopes with masses ranging from to were produced.

We present the new level scheme, which have been enlarged with more than 8 new levels and 40 gamma transitions. A crosscheck of previously measured known lifetimes is also provided [3].

References [1] A. Korgul et al, Phys Rev Lett , [2] R. Lica et al. Fogelberg et al Phys. Ponente : Sr. Quasi-Free Scattering QFS reactions are powerful tool to study to provide information on nuclear single-particle properties. This experimental approach has been extensive in the past to gain information on stable nuclei [1] We have recently extended the method to explore the exotic species. The oxygen isotopic chain brings excellent opportunities covering a very broad range on isospin, raging from weakly bound nuclei, 13O or 24O to stable ones such as 16,17,18O.

Previous investigations by L. Atar and P. The aim of this work is extending these studies to the proton-deficient area, and investigate O nuclear properties. In addition, fragmentation cross sections induced by these nuclei and producing light fragment are relevant in field of charged particle therapy. This technique is advantageous over conventional radiotherapy, thus understanding of these cross sections is important to improve the risk assessment related to this process.

A complete description of the fission process still represents a challenge, despite the recent progress based on time-dependent Hartree-Fock models [1]. Statistical models provide a tool to describe fission probabilities at excitation energies around the fission barrier. At high excitation energies, pre- and postscission particle emission and fission probabilities [2,3] indicate that simple statistical approaches are not valid and models, describing the dynamics of the process, are required.

These models are based on transport equations, e. Fokker-Planck or Langevin, where the main ingredients are the potential landscape and the friction and inertia tensors [4]. The friction parameter is particularly interesting because it quantifies the magnitude of the coupling between collective and intrinsic degrees of freedom in fission.

In this work, we propose to investigate these effects by taking advantage of proton-induced fission reactions at relativistic energies for producing highly-excited fissioning nuclei with low angular momentum, where dissipative effects should manifest in a clear way.

The SOFIA setup together with the inverse kinematics technique were used for the first time to measure in coincidence the mass and atomic number of the two fission fragments with good resolution [5].

These high-quality data allowed us to obtain new observables in fission. In particular, total and partial fission cross sections and the charge distribution of the fission fragments are used to characterize the fission dynamics at small deformation [6]. Moreover, we will also present the results concerning the neutron excess and the average pre- and postneutron multiplicities, which help us to investigate the postsaddle dynamics [7].

References [1] G. Scamps et al. C 91, [2] J. Lestone et al. C 79, [3] J. Benlliure et al. C 74, [4] P. Nadtochy et al.

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