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Lifetimes In Neutron Rich Nd Isotopes Measured By Doppler Profile Method
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Book Synopsis Lifetimes in Neutron-rich Nd Isotopes Measured by Doppler Profile Method by :
Download or read book Lifetimes in Neutron-rich Nd Isotopes Measured by Doppler Profile Method written by and published by . This book was released on 1995 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lifetimes of the rotational levels in neutron-rich even-even Nd isotopes were deduced from the analysis of the Doppler broadened line shapes. The experiment was performed at Daresbury with the Eurogam array, which at that time consisted of 45 Compton-suppressed Ge detectors and 5 Low-Energy Photon Spectrometers. The source was in the form of a 7-mm pellet which was prepared by mixing 5-mg; 248Cm and 65-mg KCl and pressing it under high pressure. Events for which three or more detectors fired were used to construct a cubic data array whose axes represented the [gamma]-ray energies and the contents of each channel the number of events with that particular combination of [gamma]-ray energies. From this cubic array, one-dimensional spectra were generated by placing gates on peaks on the other two axes. Gamma-ray spectra of even-even Nd isotopes were obtained by gating on the transitions in the complimentary Kr fragments. The gamma peaks de-exciting states with I ≥ 12 h were found to be broader than the instrumental line width due to the Doppler effect. The line shapes of they-ray peaks were fitted separately with a simple model for the feeding of the states and assuming a rotational band with constant intrinsic quadruple moment and these are shown in Fig. I-27. The quadrupole moments thus determined were found to be in good agreement with the quadrupole moments measured previously for lower spin states. Because of the success of this technique for the Nd isotopes, we intend to apply this technique to the new larger data set collected with the Eurogam II array. The results of this study were published.
Download or read book Nuclear Data written by and published by . This book was released on 1995 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lifetime Measurements in Neutron-rich Isotopes close to N by : Thomas Christian Braunroth
Download or read book Lifetime Measurements in Neutron-rich Isotopes close to N written by Thomas Christian Braunroth and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Lifetimes of Excited States in Neutron-rich Ce Isotopes by : Guillermo Fernández Martínez
Download or read book Measurement of the Lifetimes of Excited States in Neutron-rich Ce Isotopes written by Guillermo Fernández Martínez and published by . This book was released on 2018 with total page 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 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Nuclear Lifetimes by the Doppler Attenuation Shift Method by : Jess Brooks Thomas
Download or read book Measurement of Nuclear Lifetimes by the Doppler Attenuation Shift Method written by Jess Brooks Thomas and published by . This book was released on 1968 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Nuclear Structure of Neutron-rich Isotopes with Z from 38--42 by :
Download or read book The Nuclear Structure of Neutron-rich Isotopes with Z from 38--42 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report results from a study of the nuclei produced in the spontaneous fission of[sup 248]Cm will be presented. The present paper will concentrate on recent results on neutron-rich Sr, Zr and Mo nuclei with N= 58--64. These isotopes are of particular interest because of the way their shapes change as a function of both proton and neutron number. The basic characteristics of these shape changes have been established for some time by[beta] decay studies of low-spin states. The new data on prompt[gamma] rays extend the knowledge of the behavior of these nuclei quite considerably. The great sensitivity of Ge arrays has lead to the observation of non-yrast bands, providing more detailed information on nuclear structure; the large number of detectors and the geometry of the CLOVER detectors incorporated into EUROGAM II have allowed the measurement of angular correlations and linear polarizations, putting spin and parity assignments on to a firm footing; a further advance in the study of fission fragment spectroscopy is the determination of the lifetimes of yrast states by a new Doppler attenuation technique. These lifetime measurements give new information on the way nuclear shapes change as a function of rotational frequency.
Book Synopsis Lifetime Measurements of the Neutron-rich 36,38Si Isotopes by : Mara Mikelah Grinder
Download or read book Lifetime Measurements of the Neutron-rich 36,38Si Isotopes written by Mara Mikelah Grinder and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The shell structure of nuclei far from stability evolves from the standard shell model picture that accurately describes stable nuclei. Experimental evidence has been given by changes in structural properties of nuclei such as the shell closures. The evolution of shell structure is gradual and must be studied by looking systematically at isotopic or isotonic nuclear chains. Studies of these chains can deepen the understanding of shell structures, magic numbers and the collective natures of nuclei far from stability.The neutron rich silicon isotopes display evidence of shell evolution seen in the ratio of the low-lying excitation energies. 34Si has a closed shell nature with a proton bubble structure which evolves along the isotopic chain to the absence of the N=28 shell closure expected in 42Si. Another complementary way to probe these changes is by studying the reduced transition rates of the first 2+ and 4+ states. The ratio of the reduced transition rates has characteristic values for different collective modes. However, these values are not known for isotopes that are more neutron rich than 30Si. The reduced transition rates can be compared to various theoretical models to understand the changes taking place in this neutron-rich region.This work discusses an experiment that studied 36Si and 38Si to determine the lifetimes of their excited states and to determine the reduced transition rates of the first 2+ and 4+ states in both nuclei. From these B(E2) values, the ratio is calculated and compared to the collective models and shell model calculations. The recoil distance measurement was conducted at the National Superconducting Cyclotron Laboratory using the S800 Spectrograph, the GRETINA array, and the TRIPLEX plunger. The experiment successfully measured the lifetimes of the 2+1 and 4+1 states in 38Si and the 4+1 and 6+1 states in 36Si. Results from the measurement included the confirmation of the 2383-keV state in 38Si that had only been seen once before. The B(E2) values determined from the experiment indicate the reduced collectivity for the first 4+ states of 36,38Si indicating the persistence of the N=20 magic number through 36Si and 38Si.
Book Synopsis Measurement of Lifetimes of Nuclear Excited States by Doppler Shift Attenuation Method by : Atomic Energy of Canada Limited
Download or read book Measurement of Lifetimes of Nuclear Excited States by Doppler Shift Attenuation Method written by Atomic Energy of Canada Limited and published by . This book was released on 1960 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Passive Nondestructive Assay of Nuclear Materials by : Doug Reilly
Download or read book Passive Nondestructive Assay of Nuclear Materials written by Doug Reilly and published by . This book was released on 1991 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Lifetimes in 56Co by the Doppler Shift Attenuation Method by : Nicholas J. Schneiders
Download or read book Measurement of Lifetimes in 56Co by the Doppler Shift Attenuation Method written by Nicholas J. Schneiders and published by . This book was released on 1974 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Reinhard Krause-Rehberg Publisher :Springer Science & Business Media ISBN 13 :9783540643715 Total Pages :408 pages Book Rating :4.6/5 (437 download)
Book Synopsis Positron Annihilation in Semiconductors by : Reinhard Krause-Rehberg
Download or read book Positron Annihilation in Semiconductors written by Reinhard Krause-Rehberg and published by Springer Science & Business Media. This book was released on 1999 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book reports on recent investigations of lattice imperfections in semiconductors by means of positron annihilation. It reviews positron techniques, and describes the application of these techniques to various kinds of defects, such as vacancies, impurity vacancy complexes and dislocations.
Book Synopsis Physics Division Annual Report by : Argonne National Laboratory. Physics Division
Download or read book Physics Division Annual Report written by Argonne National Laboratory. Physics Division and published by . This book was released on 2001 with total page 312 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 1966 with total page 1474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Nucleus written by F.D. Smit and published by Springer Science & Business Media. This book was released on 1999 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the International Conference on The Nucleus: New Physics for the New Millennium, held January 18-22, 1999, at the National Accelerator Centre, Faure, South Africa
Download or read book Science Citation Index written by and published by . This book was released on 1994 with total page 2910 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1964- have guides and journal lists.
Download or read book Physics Briefs written by and published by . This book was released on 1988 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:
