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Author: Jim Al-Khalili Publisher: Morgan & Claypool Publishers ISBN: 168174581X Category : Science Languages : en Pages : 66
Book Description
While neutron halos were discovered 30 years ago, this is the first book written on the subject of this exotic form of nuclei that typically contain many more neutrons than stable isotopes of those elements. It provides an introductory description of the halo and outlines the discovery and evidence for its existence. It also discusses different theoretical models of the halo's structure as well as models and techniques in reaction theory that have allowed us to study the halo. This is written at a level accessible to graduate students starting a PhD in nuclear physics. Halo nuclei are an exotic form of atomic nuclei that contain typically many more neutrons than stable isotopes of those elements. To give you a famous example, an atom of the element lithium has three electrons orbiting a nucleus with three protons and, usually, either 3 or 4 neutrons. The difference in the number of neutrons gives us two different isotopes of lithium, Li6 and Li7. But if you keep adding neutrons to the nucleus you will eventually reach Li11, with still 3 protons (that means it's lithium) but with 8 neutrons. This nucleus is so neutron-rich that the last two are very weakly bound to the rest of the nucleus (a Li9 core). What happens is a quantum mechanical effect: the two outer neutrons float around beyond the rest of the nuclear core at a distance that is beyond the range of the force that is holding them to the core. This is utterly counterintuitive. It means the nucleus looks like a core plus extended diffuse cloud of neutron probability: the halo. The author of the book, Jim Al-Khalili, is a theoretician who published some of the key papers on the structure of the halo in the mid and late 90s and was the first to determine its true size. This monograph is based on review articles he has written on the mathematical models used to determine the halo structure and the reactions used to model that structure.
Author: Jim Al-Khalili Publisher: Morgan & Claypool Publishers ISBN: 168174581X Category : Science Languages : en Pages : 66
Book Description
While neutron halos were discovered 30 years ago, this is the first book written on the subject of this exotic form of nuclei that typically contain many more neutrons than stable isotopes of those elements. It provides an introductory description of the halo and outlines the discovery and evidence for its existence. It also discusses different theoretical models of the halo's structure as well as models and techniques in reaction theory that have allowed us to study the halo. This is written at a level accessible to graduate students starting a PhD in nuclear physics. Halo nuclei are an exotic form of atomic nuclei that contain typically many more neutrons than stable isotopes of those elements. To give you a famous example, an atom of the element lithium has three electrons orbiting a nucleus with three protons and, usually, either 3 or 4 neutrons. The difference in the number of neutrons gives us two different isotopes of lithium, Li6 and Li7. But if you keep adding neutrons to the nucleus you will eventually reach Li11, with still 3 protons (that means it's lithium) but with 8 neutrons. This nucleus is so neutron-rich that the last two are very weakly bound to the rest of the nucleus (a Li9 core). What happens is a quantum mechanical effect: the two outer neutrons float around beyond the rest of the nuclear core at a distance that is beyond the range of the force that is holding them to the core. This is utterly counterintuitive. It means the nucleus looks like a core plus extended diffuse cloud of neutron probability: the halo. The author of the book, Jim Al-Khalili, is a theoretician who published some of the key papers on the structure of the halo in the mid and late 90s and was the first to determine its true size. This monograph is based on review articles he has written on the mathematical models used to determine the halo structure and the reactions used to model that structure.
Author: Christian Beck Publisher: Springer Science & Business Media ISBN: 3642247067 Category : Science Languages : en Pages : 364
Book Description
Following the pioneering discovery of alpha clustering and of molecular resonances, the field of nuclear clustering is today one of those domains of heavy-ion nuclear physics that faces the greatest challenges, yet also contains the greatest opportunities. After many summer schools and workshops, in particular over the last decade, the community of nuclear molecular physicists has decided to collaborate in producing a comprehensive collection of lectures and tutorial reviews covering the field. This second volume follows the successful Lect. Notes Phys. 818 (Vol.1), and comprises six extensive lectures covering the following topics: Microscopic cluster models Neutron halo and break-up reactions Break-up reaction models for two- and three-cluster projectiles Clustering effects within the di-nuclear model Nuclear alpha-particle condensates Clusters in nuclei: experimental perspectives By promoting new ideas and developments while retaining a pedagogical style of presentation throughout, these lectures will serve as both a reference and an advanced teaching manual for future courses and schools in the fields of nuclear physics and nuclear astrophysics.
Author: Vidya Sagar Bhasin Publisher: Springer Nature ISBN: 3030561712 Category : Science Languages : en Pages : 127
Book Description
This book presents an overview of the different few-body techniques developed in nuclear physics and their applications to explore the structural properties of neutron-rich unstable nuclei, the so-called halo nuclei. Formal theory of two- and three-body scattering are discussed in a compact and abridged form to initiate the beginners who want to investigate the problems of halo nuclei within the framework of three-body models. Readers gain in-depth knowledge about the methods involved to solve the two- and three-body scattering problem and a special focus is put on the Faddeev approach. In this sense, the authors address both the graduate students and senior researchers. Subsequently, a detailed analysis of the Efimov effect in three-body systems is presented and the search for the effect in atomic nuclei, both Borromean and non-Borromean is addressed. The book also presents a detailed account of how to analyze, within the framework of a 3-body approach and using realistic short range forces, the structural properties of halo nuclei. Finally, the authors discuss the recent progress in effective field theory by setting up the integral equations for 3-body scattering and applying it to study low energy scattering of neutrons off halo nuclear targets.
Author: Yasuyuki Suzuki Publisher: CRC Press ISBN: 1134393431 Category : Science Languages : en Pages : 726
Book Description
Since the mid-1980s increasing effort has been put into light exotic nuclei, that is light nuclei of unusual composition. The research of the exotic nuclei began with the advent of accelerated beams of such nuclei. This new technique has revitalized nuclear physics, and the facilities producing radioactive ion beams now offer opportunities for pion
Author: Hans Paetz gen. Schieck Publisher: ISBN: 9780750311755 Category : Nuclear physics Languages : en Pages : 0
Book Description
In this book the author charts the developments in nuclear physics since its inception around a century ago by reviewing the key experiments that helped drive and shape our understanding of the field, especially in the context of the wider developments in physics in the early 20th century. In addition to providing a path through the field and the crucial events it looks at how these experiments not only answered key questions at the time but presented new challenges to the contemporary perception of the nuclear and sub-atomic worlds and how they helped develop our present understanding of nuclear physics.
Author: Dorin N. Poenaru Publisher: Springer Science & Business Media ISBN: 940100708X Category : Science Languages : en Pages : 424
Book Description
A broad range of topics of current interest are discussed, from nuclear structure at the edge of stability to nuclear astrophysics and cosmic ray physics at the highest energies. Both the state of the art and basic background information are presented with a particular emphasis on interrelated research interests. The writers are all active scientists who enjoy the highest international reputation. They cover a range of problems of nuclear structure, in particular those concerning exotic nuclei and their decay modes, their relevance to nuclear reaction chains in stellar burning processes at various astrophysical sites, and as yet unsolved questions concerning the origin, acceleration mechanism, energy spectrum and elemental composition of high energy cosmic rays. Readership: Postgraduate physicists interested in the development of modern radioactive beam facilities, large array gamma ray and cosmic ray detectors, and new theoretical tools.
Author: Vidya Sagar Bhasin Publisher: ISBN: 9783030561727 Category : Languages : en Pages : 0
Book Description
This book presents an overview of the different few-body techniques developed in nuclear physics and their applications to explore the structural properties of neutron-rich unstable nuclei, the so-called halo nuclei. Formal theory of two- and three-body scattering are discussed in a compact and abridged form to initiate the beginners who want to investigate the problems of halo nuclei within the framework of three-body models. Readers gain in-depth knowledge about the methods involved to solve the two- and three-body scattering problem and a special focus is put on the Faddeev approach. In this sense, the authors address both the graduate students and senior researchers. Subsequently, a detailed analysis of the Efimov effect in three-body systems is presented and the search for the effect in atomic nuclei, both Borromean and non-Borromean is addressed. The book also presents a detailed account of how to analyze, within the framework of a 3-body approach and using realistic short range forces, the structural properties of halo nuclei. Finally, the authors discuss the recent progress in effective field theory by setting up the integral equations for 3-body scattering and applying it to study low energy scattering of neutrons off halo nuclear targets.
Author: Sobolev Yuri G Publisher: World Scientific ISBN: 9811209464 Category : Science Languages : en Pages : 604
Book Description
This is the proceedings of the Ninth International Symposium on Exotic Nuclei EXON-2018, 10-15 September, Petrozavodsk, Russia. The first symposium took place 27 years ago in 1991 in Foros (Crimea), the later symposiums were held on Baikal Lake, in Peterhof, Khanty-Mansiysk, Sochi, Vladivostok, Kaliningrad and Kazan. The organizers of the Symposium were the five largest scientific centers of heavy-ion physics — JINR (Dubna), the RIKEN Research Center (Japan), the GANIL National Center (France), the GSI Helmholtz Centre for Heavy Ion Research (Germany), the National Superconducting Cyclotron Laboratory (Michigan, USA). The main topics are: properties of light exotic nuclei, synthesis and properties of superheavy elements, rare processes and decays, experimental facilities and future projects.
Author: Maurizio Gotti Publisher: Peter Lang ISBN: 9783039111848 Category : Language Arts & Disciplines Languages : en Pages : 312
Book Description
This volume brings together a selection of contributions presented at the 15th European Symposium on Languages for Special Purposes, held at the University of Bergamo (Italy) from 29 August to 2 September 2005. The conference title, «New Trends in Specialized Discourse», reflects the emphasis given to recent orientations in research, coming from established as well as new authors in the field. As suggested by the title of this volume, the analysis of specialized discourse calls for a specialized discourse analysis. When applied linguists deal with vocational discourses, they are faced with a double challenge: on the one hand, an understanding of textualisations often alien to the general language; on the other hand, the use of analytical tools designed specifically for their investigation. The studies presented in this volume position themselves somewhere along this continuum, focusing alternatively on converging/diverging features of texts and discourses.
Author: Jim Al-Khalili
Author: Jim Al-Khalili
Author: Christian Beck
Author: J Al-Khalili
Author: Vidya Sagar Bhasin
Author: Yasuyuki Suzuki
Author: Hans Paetz gen. Schieck
Author: Dorin N. Poenaru
Author: Vidya Sagar Bhasin
Author: Sobolev Yuri G
Author: Maurizio Gotti