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Author : Zoran Radivojevic
Publisher :
ISBN 13 : 9789513910976
Total Pages : 125 pages
Book Rating : 4.9/5 (19 download)
Download or read book Production and Spectroscopy of Very Neutron-rich Nuclei written by Zoran Radivojevic and published by . This book was released on 2001 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xiaoying Liang
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (593 download)
Download or read book Spectroscopy of Neutron Rich Nuclei Produced in Deep Inelastic Processes written by Xiaoying Liang and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Wilhelm Simon
Publisher :
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (444 download)
Download or read book Spectroscopy of Neutron-rich Nuclei Produced in the Spontaneous Fission of 252Cf written by Michael Wilhelm Simon and published by . This book was released on 1999 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joseph H. Hamilton
Publisher : World Scientific
ISBN 13 : 9812383867
Total Pages : 859 pages
Book Rating : 4.8/5 (123 download)
Download or read book Fission and Properties of Neutron-rich Nuclei written by Joseph H. Hamilton and published by World Scientific. This book was released on 2003 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents more than 100 papers devoted to the understanding of fission processes and neutron-rich nuclei. All forms of fission, from spontaneous fission of 252Cf to high-energy fragmentation, are included. Together with studies on properties of neutron-rich nuclei and astrophysics, the book also features new experimental techniques, directions and the emerging new radioactive beam facilities.
Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (871 download)
Download or read book Spectroscopy of Neutron-rich Nuclei Populated in the Spontaneous Fission of 252Cf and 248Cm written by and published by . This book was released on 1998 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spontaneous fission provides a very natural production mechanism for neutron-rich nuclei. The large excesses of neutrons over protons in heavy systems near the valley of stability, coupled with the tendency for the charge-to-mass ratio to be preserved in the fission process, results in fission fragments that lie well to the neutron-rich side of stability. The excitation energy of the primary fragments produced at scission results in the evaporation of neutrons (Fig 1) to produce secondary fragments whose excitation energy is dissipated through [gamma]-ray emission. In the last few years the study of such [gamma] rays has produced a dramatic increase in the available information on the structure of neutron-rich nuclei. This renaissance in fission-fragment spectroscopy has been due primarily to the much increased resolving power of large arrays of germanium [gamma]-ray detectors such as Euroball and Gammasphere. Through the improved detection efficiency and high granularity, these arrays have made it possible to obtain reasonable rates for the detection of three coincident [gamma] rays out of the cascades of multiplicity ten that are typically produced in spontaneous fission. In addition to the determination of the energies of excited levels, developments in spectroscopic techniques have allowed for information to be deduced regarding the spins and parities [1,2] and lifetimes [3,4] of such states of extreme isospin. In this paper we present research that has been carried out using the Euroball and Eurogam arrays to detect [gamma] rays emitted from spontaneously fissioning 248Cm and 252Cf. The paper focuses on three sub-areas of current activity, namely, the measurement of yields of secondary fragment pairs, the measurement of state lifetimes at around spin 10, and recent measurements of g-factors of excited states in fission fragments.
Author : H K Carter
Publisher : World Scientific
ISBN 13 : 9814470309
Total Pages : 769 pages
Book Rating : 4.8/5 (144 download)
Download or read book Fission And Properties Of Neutron-rich Nuclei - Proceedings Of The Fourth International Conference written by H K Carter and published by World Scientific. This book was released on 2008-08-08 with total page 769 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings are the fourth in the series of International Conferences covering fission and properties of neutron-rich nuclei, which are at the forefront of nuclear structure research. The time interval of 5 years between each conference allows for significant new results to be achieved. Recently, world leaders in theory and experiments in research and the development of new facilities for research presented their latest results in areas such as synthesis of superheavy elements, new facilities for and recent results with radioactive ion beams, structure of neutron-rich nuclei, nuclear fission process, fission yields and nuclear astrophysics. This book is a major source of the latest research in these areas and plans for the future. The conference brought together a unique group of over 100 speakers including the directors of the major nuclear laboratories in Canada, France, Germany, Japan, Russia and the US along with leading research scientists from around the world.
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Download or read book Spectroscopy of Neutron-rich Nuclei Populated in the Spontaneous Fission Of[sup 252]Cf And[sup 248]Cm written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Spontaneous fission provides a very natural production mechanism for neutron-rich nuclei. The large excesses of neutrons over protons in heavy systems near the valley of stability, coupled with the tendency for the charge-to-mass ratio to be preserved in the fission process, results in fission fragments that lie well to the neutron-rich side of stability. The excitation energy of the primary fragments produced at scission results in the evaporation of neutrons (Fig 1) to produce secondary fragments whose excitation energy is dissipated through[gamma]-ray emission. In the last few years the study of such[gamma] rays has produced a dramatic increase in the available information on the structure of neutron-rich nuclei. This renaissance in fission-fragment spectroscopy has been due primarily to the much increased resolving power of large arrays of germanium[gamma]-ray detectors such as Euroball and Gammasphere. Through the improved detection efficiency and high granularity, these arrays have made it possible to obtain reasonable rates for the detection of three coincident[gamma] rays out of the cascades of multiplicity ten that are typically produced in spontaneous fission. In addition to the determination of the energies of excited levels, developments in spectroscopic techniques have allowed for information to be deduced regarding the spins and parities[1,2] and lifetimes[3,4] of such states of extreme isospin. In this paper we present research that has been carried out using the Euroball and Eurogam arrays to detect[gamma] rays emitted from spontaneously fissioning[sup 248]Cm and[sup 252]Cf. The paper focuses on three sub-areas of current activity, namely, the measurement of yields of secondary fragment pairs, the measurement of state lifetimes at around spin 10, and recent measurements of g-factors of excited states in fission fragments.
Author : James Ollier
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (591 download)
Download or read book The Yrast Spectroscopy of Neutron-rich Nuclei Produced in Deep-inelastic Processes written by James Ollier and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : World Scientific
ISBN 13 : 9812833439
Total Pages : 769 pages
Book Rating : 4.8/5 (128 download)
Download or read book Fission and Properties of Neutron-Rich Nuclei - Proceedings of the Fourth International Conference written by and published by World Scientific. This book was released on 2008 with total page 769 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings are the fourth in the series of International Conferences covering fission and properties of neutron-rich nuclei, which are at the forefront of nuclear structure research. The time interval of 5 years between each conference allows for significant new results to be achieved. Recently, world leaders in theory and experiments in research and the development of new facilities for research presented their latest results in areas such as synthesis of superheavy elements, new facilities for and recent results with radioactive ion beams, structure of neutron-rich nuclei, nuclear fission process, fission yields and nuclear astrophysics. This book is a major source of the latest research in these areas and plans for the future. The conference brought together a unique group of over 100 speakers including the directors of the major nuclear laboratories in Canada, France, Germany, Japan, Russia and the US along with leading research scientists from around the world.
Author : Joseph H. Hamilton
Publisher : World Scientific
ISBN 13 : 981270521X
Total Pages : 859 pages
Book Rating : 4.8/5 (127 download)
Download or read book Fission and Properties of Neutron-rich Nuclei written by Joseph H. Hamilton and published by World Scientific. This book was released on 2003 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting more than 100 papers devoted to the understanding of fission processes and neutron-rich nuclei, this book covers all forms of fission, from spontaneous fission of 252Cf to high-energy fragmentation. Together with studies on properties of neutron-rich nuclei and astrophysics, the book also features new experimental techniques, directions and the emerging new radioactive beam facilities.
Author : Joseph H Hamilton
Publisher : World Scientific
ISBN 13 : 9814485446
Total Pages : 859 pages
Book Rating : 4.8/5 (144 download)
Download or read book Fission And Properties Of Neutron-rich Nuclei - Proceedings Of The Third International Conference written by Joseph H Hamilton and published by World Scientific. This book was released on 2003-10-16 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents more than 100 papers devoted to the understanding of fission processes and neutron-rich nuclei. All forms of fission, from spontaneous fission of 252Cf to high-energy fragmentation, are included. Together with studies on properties of neutron-rich nuclei and astrophysics, the book also features new experimental techniques, directions and the emerging new radioactive beam facilities.
Author : Thomas W. O'Donnell
Publisher :
ISBN 13 :
Total Pages : 576 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Superconducting-solenoid Isotope Spectrometer for Production of Neutron-rich Nuclei written by Thomas W. O'Donnell and published by . This book was released on 2000 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joseph H Hamilton
Publisher : World Scientific
ISBN 13 : 9814525448
Total Pages : 746 pages
Book Rating : 4.8/5 (145 download)
Download or read book Fission And Properties Of Neutron-rich Nuclei - Proceedings Of The Fifth International Conference On Icfn5 written by Joseph H Hamilton and published by World Scientific. This book was released on 2013-09-16 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings are the fifth in the series of International Conferences covering fission and properties of neutron-rich nuclei, which are at the forefront of nuclear research. The time interval of 5 years between each conference allows for significant new results to be achieved. Recently, world leaders in theory and experiments in research and the development of new facilities for research presented their latest results in areas such as synthesis of superheavy elements, new facilities for and recent results with radioactive ion beams, structure of neutron-rich nuclei, nuclear fission process, fission yields and nuclear astrophysics. This book is a major source of the latest research in these areas and plans for the future. The conference brought together a unique group of over 100 speakers including leaders from the major nuclear laboratories in Canada, China, France, Finland, Germany, Italy, Japan, Russia, Switerzland and the US along with leading research scientists from around the world.
Author : Kathleen Connor Goetz
Publisher :
ISBN 13 :
Total Pages : 123 pages
Book Rating : 4.:/5 (11 download)
Download or read book Total Absorption Spectroscopy of Neutron Rich Nuclei Across the N written by Kathleen Connor Goetz and published by . This book was released on 2017 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Decay spectroscopy of neutron rich nuclei near doubly magic 78Ni [78-Nickel] is relevant to nuclear structure and astrophysics as well as reactor and neutrino physics. [upper case beta]-decay [betadecay] calorimetry studies are essential to reconstruct the decay strength function and is used to overcome the problems arising from the high density of states leading to nuclear Pandemonium. The Modular Total Absorption Spectrometer, currently located in HRIBF at the Oak Ridge National Laboratory, collected data on 25 fission products of 238U [238- Uranium] during a run in March 2015. Analysis of the 84,̳85,̳86Br [84, 85 and 86-Bromine] data from the March 2015 run indicates a significant modification of the [upper case beta]-strength [betastrength] function when compared with previous measurements for all three nuclei, including the introduction of new high energy states not previously detected. The cases of 84,̳85,̳86Br will be discussed in concert with shell model predictions. 85Br [85-Bromine] is a singly magic N=50 nucleus. Through the study of N=49,50,51 nuclei the decay properties around a neutron shell closure governed by the interplay between core and valence nucleon excitations and Gamow-Teller decay in a 78Ni [78-Nickel] core can be understood and provide a pinpoint for the study of more exotic nuclei.
Author : Joseph H Hamilton
Publisher : World Scientific
ISBN 13 : 9813229438
Total Pages : 684 pages
Book Rating : 4.8/5 (132 download)
Download or read book Fission And Properties Of Neutron-rich Nuclei - Proceedings Of The Sixth International Conference On Icfn6 written by Joseph H Hamilton and published by World Scientific. This book was released on 2017-09-28 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim and scope of the conference and book were to bring world leaders in the areas of fission, structure of neutron-rich nuclei, superheavy elements, astrophysics and new facilities for these research areas to present the latest developments in both theory and experiment to serve as benchmarks for future research.World leaders describe the latest research including development of new facilities under construction to point out the latest and future direction in research. These proceedings are published following the conferences every four to five years since 1997.
Author : David O'Donnell
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (817 download)
Download or read book Gamma -Ray Spectroscopy of Neutron-rich Chlorine Nuclei written by David O'Donnell and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A beam of 36/16S20 at 215 MeV was used to bombard a 300 ugcm-2 thick target of 208/82Pb126 in order to initiate deep-inelastic and multi-nucleon transfer reactions. The I-ray decay of the reaction products was studied using the CLARA array of escape suppressed germanium detectors which was coupled to the large-angular-acceptance magnetic spectrometer PRISMA, in which the velocity, mass, atomic number and kinetic energy of the reaction products was measured. Determination of the velocity and mass has allowed Doppler corrected [gamma]-ray spectra to be obtained for each individual projectile-like nuclide to be produced. Seven neutron-rich isotopes of Cl have been populated and their decay by [gamma]-ray emission has been studied. Decay schemes have been constructed and compared to the results of shell-model calculations. Previously unreported transitions have been observed in 38Cl, 40Cl, 41Cl and 42Cl. ___.
Author : D. Lee
Publisher :
ISBN 13 :
Total Pages : 1 pages
Book Rating : 4.:/5 (316 download)
Download or read book Production of Beams of Neutron-rich Nuclei Between Ca and Ni Using the Ion-guide Technique written by D. Lee and published by . This book was released on 2004 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since several elements between Z = 20-28 are refractory in their nature, their neutron-rich isotopes are rarely available as low energy Radioactive Ion Beams (RIB) in ordinary Isotope Separator On-Line facilities [1-4]. These low energy RIBs would be especially interesting to have available under conditions which allow high-resolution beta-decay spectroscopy, ion-trapping and laser-spectroscopy. As an example, availability of these beams would open a way for research which could produce interesting and important data on neutron-rich nuclei around the doubly magic {sup 78}Ni. One way to overcome the intrinsic difficulty of producing these beams is to rely on the chemically unselective Ion Guide Isotope Separator On-Line (IGISOL) technique [5]. Quasi- and deep-inelastic reactions, such as {sup 197}Au({sup 65}Cu, X)Y, could be used to produce these nuclei in existing IGISOL facilities, but before they can be successfully incorporated into the IGISOL concept their kinematics must be well understood. Therefore the reaction kinematics part of this study was first performed at the Lawrence Berkeley National Laboratory using its 88'' cyclotron and, based on those results, a specialized target chamber was built[6]. The target chamber shown in Fig. 1 was recently tested on-line at the Jyvaaskylaa IGISOL facility. Yields of mass-separated radioactive projectile-like species such as {sup 62,63}Co are about 0.8 ions/s/pnA, corresponding to about 0.06 % of the total IGISOL efficiency for the products that hit the Ni-degrader. (The current maximum 443 MeV {sup 65}Cu beam intensity at Jyvaaskylaa is about 20 pnA.) This total IGISOL efficiency is a product of two coupled loss factors, namely inadequate thermalization and the intrinsic IGISOL efficiency. In our now tested chamber, about 9 % of the Co recoils are thermalized in the owing He gas (p{sub He}=300 mbar) and about 0.7 % of them are converted into the mass-separated ion beams. In the future, both of these physical/chemical conditions can be suppressed by introducing Ar as a buffer gas and by relying on selective laser re-ionization. This combination will produce isobarically pure beams and it will increase the existing yields by at least a factor of 100, making this overall approach to the study of neutron rich nuclei even more attractive.
