Browsing by Author "Maj, Adam"
Results Per Page
Sort Options
Item At the intersection of two infinities(2019) Maj, AdamA musical spectacle "At the intersection of two infinities" with music by Józef Skrzek and film narration by Jerzy Grębosz. Concept and direction: Adam MajItem Na styku dwóch nieskończoności(2019) Maj, AdamWyreżyserowane przez prof. Adama Maja z IFJ PAN widowisko z elementami edukacyjnymi jest połączeniem muzyki, skomponowanej i wykonanej na fortepianie oraz syntezatorach przez Józefa Skrzeka i innych artystów, z narracją obrazowaną filmami i animacjami w wykonaniu dr. hab. Jerzego Grębosza z IFJ PAN.Item PARIS White Book(Institute of Nuclear Physics Polish Academy of Sciences, 2021) Camera, Franco; Maj, AdamPARIS is a collaborative international project (http://paris.ifj.edu.pl) to construct and operate a novel gamma-ray calorimeter, which profits wholly or in part from employment of novel, advanced scintillator materials, such as Lanthanum Bromide, and which should have performances superior to any other existing scintillator calorimeter. In fact, PARIS is eminently portable and could be used at different international facilities using both stable or radioactive beams. The present report, the PARIS White Book, is intended to provide a general description of the performances of the PARIS array, of the different laboratories which could, in the next years, host it and of the physics cases that can be addressed by the PARIS array. The presented physics cases are obviously not exhaustive. They simply give some examples where the physical information, provided by the PARIS array, is understood to be the key point for the success of the measurement. As the physics cases will also depend on the detector arrays which will be coupled to PARIS in the future years, and on the beams (stable or radioactive) provided by the hosting laboratory, this list of possible experiments is expected to increase with the years. It is the intention of this White Book to support the collaboration and help to decide on the future PARIS campaigns, as well as on its promising enhancement to 4π.Item Report on Research Activities 2017-2020(Institute of Nuclear Physics Polish Academy of Sciences, 2021-05) Maj, Adam; Fornal, Bogdan; Grębosz, Jerzy; Horzela, Andrzej; Kopeć, Renata; Kwiatek, Wojciech; Lesiak, Tadeusz; Olko, Paweł; Skrzypek, Maciej; Świerblewska, Iwona; Świerblewski, Jacek; Wilczyński, Henryk; Zieliński, PiotrThe "Report on Research Activities 2017-2020" summarizes the most important highlights of the scientific activities at IFJ PAN in the last four years. These highlights encompass activities in both fundamental and application research. Studies concerning basic research were carried out at the Division of Particle Physics and Astrophysics, the Division of Nuclear Physics and Strong Interactions, the Division of Condensed Matter Physics and at the Division of Theoretical Physics. In turn, the works related to scientific applications were conducted at the Division of Interdisciplinary Research and the Division of Applications of Physics. Of particular importance is the Cyclotron Centre Bronowice (CCB), which is a spectacular demonstration of the strong connection between basic research and applications. Reported is also information about the Krakow School of Interdisciplinary PhD Studies (KISD) which is coordinated by IFJ PAN, about the division of the construction of scientific equipment and infrastructure (DAI), about accredited laboratories, as well as about the outreach activity which has been carried out with great vigor. We invite the Reader of the Report to learn about all of the main research achievements of our Institute in recent years.Item Structure of Bi isotopes close to the 208Pb doubly-magic core(Institute of Nuclear Physics Polish Academy of Sciences, 2014) Cieplicka, Natalia; Fornal, Bogdan; Maj, Adam; Pfützner, MarekThe atomic nucleus, being a dense system of protons and neutrons, can be considered as a 'laboratory' in which three fundamental interactions strong, electromagnetic and weak, can be studied. Although much experimental data concerning the structure and characteristics of the atomic nucleus have been collected, a theoretical description which would explain all the observed phenomena is still incomplete. This is in part because the nucleon-nucleon interaction has very complex characteristics due to the fact that nucleons are not fundamental particles so they have an intrinsic structure (thus, the description of nuclear forces must take into account that nucleon-nucleon interactions are the result of interactions between the quarks). It is also because the nucleus, as a system of many strongly interacting nucleons obeying the Pauli exclusion principle, demonstrates a very high degree of complexity. Moreover, electromagnetic and weak interactions manifesting in the atomic nucleus are the source of additional complications in its description. As a consequence, progress in theory must go together with experimental investigations, which results in a strong connection between theory and experiment in nuclear physics. New theoretical concepts dictate which experiments would be the most effective in verifcation of a particular model. On the other hand, measurements can inspire theory to gain better parameter values from its models. To describe the atomic nucleus as a system of more elementary constituents (nucleons), one needs to know the wave function being the solution of wave equation for such a system. Due to the diffculties mentioned above, one needs to use simplifed models instead of the exact description. One of them is the shell model, which explains many experimental observations, such as magic numbers of nucleons: 2, 8, 20, 28, 50, 82, 126, the spin-parity values of the ground states of many nuclei, as well as the structure of excitations of nuclei in the region of magic nuclides. While the shell model with a classic set of orbitals works well near doublymagic nuclei lying close to the stability valley, in the exotic regions of the nuclear chart; i.e., in the regions remote from stability, the situation is different - the structure of singleparticle energy levels changes and new energy gaps may show up while the classical ones may disappear.One way to trace all these changes, is to undertake systematic investigations of excited structures along a chain of neutron-rich isotopes to the description of which the shell model can be applied. In the present work, we have chosen as the objective of study the series of Bi isotopes near the doubly-closed nucleus 208Pb. We have investigated the 205;206;210Bi nuclei, which have one valence proton and from four neutron holes to one neutron particle with respect to the doubly-magic core 208Pb. Since 208Pb is considered to be one of the best doubly-closed cores due to remarkably wide energy gaps which separate proton shells at Z=82 and neutron shells at N=126, the structure of the 205;206;210Bi nuclei is an excellent testing ground for modern shell-model calculations. In the present work, information about the high-spin yrast structures in the 205;206;210Bi isotopes has been extended. In particular, the aim of the work is the identifcation of high spin states arising from valence particles/holes excitations and from core excitations in 205;206;210Bi. Also, the spectroscopic data on the low-spin excitations in 210Bi were acquired in a neutron-capture reaction. The neutron rich nuclei are diffcult to reach for spectroscopy studies, because they cannot be produced in fusion-evaporation reactions. The access to excited structures at high spin in those nuclides is possible thanks to a method which relies on using deep-inelastic collisions (DIC) of heavy ions - this method has been developed at IFJ PAN. The main object of interest in the presented thesis are high-spin structures in Bi isotopes. The experiments aimed at investigating those structures were performed at Argonne National Laboratory, where Bi nuclei were populated in deep-inelastic reactions with the use of 76Ge and 208Pb beams on 208Pb target. During such reactions, the nuclei come to a close contact and much kinetic energy is dissipated giving rise to internal excitation energy. In the exit channel one has then two products excited to relatively high energy and spin. Since thick targets were used, the products were stopped inside the target and most of the rays that were measured with the use of the Gammasphere multidetector germanium array, appeared in the spectra as sharp lines - they were emitted from nuclei at rest. The second experiment, performed at the Institute Laue-Langevin in Grenoble, was devoted to the low-spin structure of the 210Bi nucleus. In this case 210Bi was produced in cold-neutron capture on 209Bi. The spectroscopic measurements in the non-yrast low-energy region of 210Bi could be performed. In the first chapter, an introduction to the structure of the atomic nucleus is presented - it includes: the characteristics of nuclear forces and the foundations of the shell model as well as the calculation methods and computer codes used nowadays. The second chapter provides a short description of the region of interest - the region around doubly-magic 208Pb - with emphasis on Bi isotopes. The third chapter presents description of the reactions leading to the nuclei of interest, the experiments which were performed, and the methods of analysis of the coincidence and angular distributions and correlations of -ray data. In the fourth chapter, the experimental results are discussed. The fifth chapter is devoted to comparisons of the experimental results with predictions based on shell-model calculations involving the presently available two-body shell-model interactions. The last part contains a summary.Item White Book on the Complementary Scientific Programme at IFMIF-DONES(Institute of Nuclear Physics Polish Academy of Sciences, 2016) Maj, Adam; Lewitowicz, Marek; Królas, Wojciech; Harakeh, Muhsin; Ibbara, AlvaradoIFMIF-DONES - a powerful neutron irradiation facility for studies and qualification of materials is planned as part of the European roadmap to fusion-generated electricity. Its main goal will be to study properties of materials under severe irradiation in a neutron field similar to the one in a fusion reactor first wall. It is a key facility to prepare for the construction of the DEMO Power Plant envisaged to follow ITER. At present, as the construction of ITER is well under way, it has been considered to accelerate the design and construction of DEMO, which should start during the 2030 decade. Thus, the decision to start the building of IFMIF-DONES is imminent. IFMIF-DONES must start operation in mid 2020’s in order to provide results on material properties from the first batches of irradiated samples in time to be used for the design of DEMO. Assuming a minimum period of 5 years for the construction process the design and validation activities for IFMIF-DONES must be completed by 2020. Other preparatory activities such as site preparation and licensing must also start before 2020. As part of those activities EUROfusion, the European Consortium for the Development of Fusion Energy, which manages and funds European fusion research activities on behalf of EURATOM, has started the Early Neutron Source work package (WPENS) with the main goal to prepare by 2018 the Engineering Design of IFMIF-DONES. At the same time, Fusion for Energy, the European Union’s Joint Undertaking for the Development of Fusion Energy, which will be responsible for the construction of IFMIF-DONES, has asked member states to express interest in the siting of the facility. Poland is one of the countries, which have declared interest to host IFMIF-DONES. The ELAMAT (European Laboratory for Material Science) consortium was founded in 2014 by the Rzeszów University of Technology and the Institute of Nuclear Physics of the Polish Academy of Sciences (IFJ PAN) as a bottom-up initiative of the science community to prepare the proposal to site IFMIF in the Podkarpackie region of Poland [1]. Its members are the leading universities, research institutes, high technology companies and business environment institutions active in Poland. Consortium participants seek to combine economic and scientific potential of business and research and development institutions for building in Poland an international research infrastructure for advanced materials research. One of the decisions of the Consortium was to establish the ELAMAT Scientific Council with the aim to study possible extension of the objectives of the IFMIF-DONES facility beyond its standard programme of material studies for fusion reactors [2]. The Scientific Council whose members represent the fusion, nuclear physics, medical physics and technology research communities organised two open meetings to discuss the opportunities offered by the new facility. At the workshop “Town Meeting on IFMIF/ELAMAT Complementary Scientific Programme”, which took place in April 2016 [3], it was decided to prepare a collection of science cases for the future facility in the form of a White Book. At the same time, this activity was met with interest and received support from the Early Neutron Source work package (WPENS) of EUROfusion. The possible science cases, discussed in this White Book, require certain modifications of the IFMIF-DONES facility layout (see Fig.1). The considerations and conclusions presented in the White 6 Book are independent of the site of the future facility. The intention of the authors of this report was to demonstrate that many foremost topics and questions of todays science in several active fields of research could be addressed and investigated at the IFMIF-DONES without compromising its main role of a material irradiation facility for the fusion programme. It is hoped that such demonstration will raise interest and bring support for the construction of IFMIF-DONES and that elements of the complementary science programme will be incorporated into the original programme of the facility.Item White Book on the Future of Low-Energy Nuclear Physics in Poland and the Development of the National Research Infrastructure(Środowiskowe Laboratorium Ciężkich Jonów, 2020) Maj, Adam; Rusek, Krzysztof; Bednarczyk, Piotr; Dudek, Jerzy; Fornal, Bogdan; Kicińska-Habior, Marta; Kistryn, Stanisław; Lewitowicz, Marek; Matulewicz, Tomasz; Nazarewicz, Witold; Satuła, Wojciech; Skalski, J.; Srebrny, Janusz; Stephan, E.; Trzaska, Władysław H.This Report presents the status and perspectives of low-energy nuclear physics research in Poland. It has become a tradition that the society of Polish nuclear physicists periodically summarizes the community's achievements and draws up plans for the future. The very first such reports was prepared by a team of scientists led by Professor Jerzy Jastrzębski and publisched by the Polish Nuclear Physisc Network under the title "Nuclear Physics in Poland 1996-2006". The next one, entitled "Long-Range Plan of Polish Nuclear Physics in the years 2007-2016" was prepared by the Commission of Nuclear Physics, the Advisory Board of the Narional Atomic Energy Agency of Poland. The team of editors was led by Professor Jan Styczeń. A few years latter, this Commission, led this time by Professor Krzysztof Rusek, published the "Long-Range Plan of Polish Nuclear Physics and Nuclear Methods, 2010-2020".