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High Spin States In Neutron Rich Tantalum Isotopes
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Book Synopsis High-spin States in Neutron-rich Tantalum Isotopes by : Nyaladzi Palalani
Download or read book High-spin States in Neutron-rich Tantalum Isotopes written by Nyaladzi Palalani and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep-inelastic reactions between 6.2 MeV/A Xe-136 ions and a thick W-186 target have been used to investigate excited states in neutron-rich tantalum isotopes, establishing new structures in Ta-182 and Ta-183. Spins and parities were determined from angular correlations, internal conversion coefficients deduced from intensity balances, and consideration of transition strengths. The structure and configuration assignments have been established from the measured magnetic properties and alignments of the observed rotational bands, as well as comparison with multi- quasiparticle calculations. Multi-quasi particle calculations using adjusted Nilsson energies and Lipkin-Nogami pairing model were performed for the series of tantalum nuclei between A=181 and A=185.The previously known 1300 ns isomer in Ta-183 was fully characterised with its energy deduced as 1332 keV and a K = 19/2+ assignment. Several new multi-quasiparticle states, including two isomers with 41(5) ns mean-life, K = 29/2- and 70(4) ns (mean-life), K = 41/2-, have been further identified and found to be feeding the known 1300 ns isomer. From the multi-quasiparticle calculations, a three-quasiparticle configuration was assigned to both the K = 19/2+ and 29/2- isomers, while the upper-most isomer at 41/2- was established to have a five-quasiparticle nature.The out-of-beam gamma-ray coincidence data revealed a new level structure in coincidence with tantalum X-rays. Measurements of the magnetic properties of this structure from branching ratios, together with the yields from various data sets using W-186, Re-185, Re-187 and Os-192 targets, enabled an isotopic assignment of this structure to Ta-182. Three isomeric states were found to be feeding the known 10-> isomer in Ta-182. A rotational band built on the 10- isomer has been > observed and was found to be fed by a new 14+, 356 ns (mean-life) > isomer at 1950 keV. Several intrinsic states above this isomer are > also identified. Firm spins and parities have been established up to > the 14+ isomeric state. Due to limited spectroscopic information, the > spins and parities for the levels above this isomer are tentative.The structure of Ta-182 and Ta-183 are also investigated by comparing the measured transition strengths with similar transitions in the mass region. Most of the transition strengths measured are in good agreement with expectations in the region, except for a few cases of E1 decays that are anomalous. Possible explanations for some of these anomalous transition strengths have been discussed.Few cases has been observed where the predicted yrast states are not observed experimental in both Ta-182 and Ta-183. Possible explanations have been discussed as well.Both the calculations and experimental results suggest a high density of intrinsic states occurs along the yrast line at high excitation energy in both nuclei. This pattern seems to emerge in the more neutron-rich tantalums isotopes resulting in a more complex level scheme that is difficult to interpret.
Book Synopsis An Investigation of Some Neutron Deficient Tantalum Isotopes by : F. Curtis Dohan (Jr)
Download or read book An Investigation of Some Neutron Deficient Tantalum Isotopes written by F. Curtis Dohan (Jr) and published by . This book was released on 1957 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book INIS Atomindex written by and published by . This book was released on 1996 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Particle Emission From Nuclei by : Dorin N. Poenaru
Download or read book Particle Emission From Nuclei written by Dorin N. Poenaru and published by CRC Press. This book was released on 2018-01-18 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has three volume. The first volume is mainly devoted to the macroscopic-microscopic theory in its traditional form and extended to very high mass and charge asymmetry. Applications of this theory to the emission of different kinds of charged particles from nuclei are presented in the second volume, where recent experimental achievements in alpha decay, proton, and heavy ion (14C, 24Ne, 28Mg, etc.) radioactivities are also discussed. Experiments on spontaneous fission, fission isomers, and more complex phenomena like particle-accompanied fission,delayed processes: p, a, 2p, t, n, 2n, 3n, and the new mechanism of cold fission (or fission with compact shapes) are described in detail in the third volume.
Book Synopsis Nuclear Decay Schemes of Some of the Isotopes of Tantalum by : Frank Frederick Felber
Download or read book Nuclear Decay Schemes of Some of the Isotopes of Tantalum written by Frank Frederick Felber and published by . This book was released on 1957 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The 4th International Conference on Exotic Nuclei and Atomic Masses by : Carl J. Gross
Download or read book The 4th International Conference on Exotic Nuclei and Atomic Masses written by Carl J. Gross and published by Springer Science & Business Media. This book was released on 2007-12-10 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Conference on Exotic Nuclei and Atomic Masses (ENAM) has gained the status of the premier meeting for the physics of nuclei far from stability. The selected and refereed papers presenting the main results constitute valuable proceedings that offer everyone working in this field an authoritative and comprehensive source of reference.
Book Synopsis Nucleus-nucleus Collisions by : George F. Bertsch
Download or read book Nucleus-nucleus Collisions written by George F. Bertsch and published by . This book was released on 1983 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unbound States of Neutron-rich Carbon Isotopes by : Silvia Murillo Morales
Download or read book Unbound States of Neutron-rich Carbon Isotopes written by Silvia Murillo Morales and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992-02 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1992 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1970 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Intruder States in Even-even Neutron-rich Pd Isotopes by : G. Lhersonneau
Download or read book Intruder States in Even-even Neutron-rich Pd Isotopes written by G. Lhersonneau and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nuclei Far From Stability:5th International Conference by : Ian Stuart Towner
Download or read book Nuclei Far From Stability:5th International Conference written by Ian Stuart Towner and published by New York : American Institute of Physics. This book was released on 1988 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Single-particle States in Neutron-rich 69Cu and 71Cu by Means of the (d,3He) Transfer Reaction by : Pierre Morfouace
Download or read book Single-particle States in Neutron-rich 69Cu and 71Cu by Means of the (d,3He) Transfer Reaction written by Pierre Morfouace and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In two (d,3He) transfer reactions with MUST2 at GANIL and the split-pole at Orsay, we have determined the position of the proton-hole states in the neutron-rich 71Cu (N=42) and 69Cu (N=40) isotopes. We have found that in 71Cu the hole strength of the f7/2 orbital lies at higher excitation energies than expected. From beta-decay and laser spectroscopy, the f5/2 first excited particle state in these isotopes was known to come down rapidly in energy when passing N=40 and even become the ground state in 75Cu. This sudden energy shift has been explained in a number of theoretical works. The prediction for the f7/2 spin-orbit partner was that it would change in energy too through a related effect. Experimentally, the f7/2 proton-hole state is not known for N>40. In 71Cu two 7/2- states around 1 MeV are candidates to be a proton-hole.The experiment at GANIL took place in March 2011. A secondary beam of 72Zn at 38 AMeV was produced by fragmentation and purified through the LISE spectrometer. The transfer reaction in inverse kinematics was studied with the MUST2 detectors plus four 20 micrometer silicon detector to identified the 3He of low kinetic energy. The excitation spectrum of 71Cu was reconstruct thanks to the missing mass method and the angular distributions were extracted and compared with a reaction model using the DWUCK4 and DWUCK5 code. From this work no states have been populated around 1 MeV concluding that the centroid of the f7/2 lies at higher excitation energy. We then remeasured the single-particle strength in 69Cu in the corresponding (d,3He) reaction at Orsay in March 2013 in order to extend the existing data where 60% of the f7/2 strength is missing and make sure that there is a consistent analysis of spectroscopic factors between both isotopes in order to well understood and well quantify the evolution of the f7/2 orbital when we start filling the g9/2 orbital. In this second experiment we have performed the reaction in direct kinematics using a deuteron beam at 27 MeV provided by the tandem and a target of 70Zn. In this work we were able to extract three new angular distributions and we have measured a new part of the f7/2 strength.Finally in order to interpret the results we have obtained from those two experiments, state-of-the-art shell-model calculations have been carried out in collaboration with the Strasbourg group using the Antoine code. The valence space consists in a core of 48Ca with the valence orbitals for protons f7/2, p3/2, f5/2, p1/2 and the orbitals p3/2, f5/2, p1/2, g9/2, d5/2 for neutrons. The calculations have been done allowing 8p-8h and show that the strength is indeed at high energy and no f7/2 proton-hole state lies around 1 MeV in 71Cu.
