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Author : Daniel S. Koltun
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.3/5 (91 download)
Download or read book Double Charge Exchange Scattering of Low Energy Pions by Nuclei written by Daniel S. Koltun and published by . This book was released on 1965 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low-energy Pion Double Charge Exchange and Nucleon-nucleon Correlations in Nuclei written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent measurements of pion double-charge exchange (DCX) at energies 20 to 70 MeV are providing a new means for studying nucleon-nucleon correlations in nuclei. At these energies the nucleus is relatively transparent, allowing simpler theoretical models to be used in interpreting the data and leading to a clearer picture. Also the contribution to DCX of sequential charge-exchange scattering through the intermediate analog state is suppressed near 50 MeV and transitions through non-analog intermediate states become very important. Recent theoretical studies by several groups have shown that while transitions through the analog route involve relatively long nucleon-nucleon distances, those through non-analog intermediate states obtain nearly half their strength from nucleon pairs with less than 1 fermi separation. Thus DCX near 50 MeV is an excellent way to study short-range nucleon-nucleon correlations. Data has been obtained for double-isobaric analog state (DIAS) transitions on 14C, 18O, 26Mg, and a number of nuclei in the f-7/2 shell including /sup 42,44,48/Ca, primarily at 35 and 50 MeV. Additional data for non-analog (ground state) transitions has also been obtained for 12C. These data are consistent with the two-amplitude theoretical models where the two amplitudes represent scattering through analog and through non-analog intermediate states. Calculations based on shell-model correlations explain the general trends of the data. Preliminary new data on the forward-angle energy dependence of the DIAS and g.s. transitions for /sup 42,44,48/Ca from 25 to 70 MeV is presented here and the current theoretical picture based upon this data is reviewed. 26 refs., 31 figs., 4 tabs.
Author :
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (727 download)
Download or read book Pion Double Charge Exchange Scattering Above the Delta Resonance written by and published by . This book was released on 1990 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data are presented on pion-nucleus double-charge-exchange scattering at energies between 300 and 500 MeV, the highest energies measured so far, together with a review of results at lower energies. The small-angle excitation functions disagree with predictions based on a six-quark cluster model and on an optical model consistent with single-charge-exchange scattering at these energies, but they are consistent with a distorted-wave calculation. Data on f--2-shell nuclei are in partial agreement with a two-amplitude model which is successful at lower energies. In order to achieve good understanding of this process at these energies, more work, both experimental and theoretical, is needed. 16 refs., 6 figs.
Author :
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (727 download)
Download or read book Single- and Double-charge Exchange at Low Pion Energies written by and published by . This book was released on 1991 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review is given of pion single- and double-charge exchange reactions at incident energies of 25 to 65 MeV leading to isobaric analog states, and in the case of double-charge exchange leading to the ground state of the residual nucleus. The crucial role of the higher nuclear transparency at low pion energies for the analysis of the data in terms of single and double scattering is demonstrated. The large effects on double-charge exchange produced by the spatial correlations in nuclear wave functions are evident. The data on 1f--2 nuclei at 35 MeV are used to establish the general validity of a shell-model-based two-amplitude model for these transitions. Recent measurements of the energy dependence between 25 and 65 MeV of double-charge exchange cross sections at forward angles are presented and discussed. 33 refs., 19 figs.
Author : William R Gibbs
Publisher : World Scientific
ISBN 13 : 9814611875
Total Pages : 622 pages
Book Rating : 4.8/5 (146 download)
Download or read book Pion-nucleus Double Charge Exchange - 2nd Lampf Workshop written by William R Gibbs and published by World Scientific. This book was released on 1990-09-24 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: What do you associate with chemistry? Explosions, innovative materials, plastics, pollution? The public's confused and contradictory conception of chemistry as basic science, industrial producer and polluter contributes to what we present in this book as chemistry's image as an impure science. Historically, chemistry has always been viewed as impure both in terms of its academic status and its role in transforming modern society. While exploring the history of this science we argue for a characteristic philosophical approach that distinguishes chemistry from physics. This reflection leads us to a philosophical stance that we characterise as operational realism. In this new expanded edition we delve deeper into the questions of properties and potentials that are so important for this philosophy that is based on the manipulation of matter rather than the construction of theories./a
Author : M J Vicente-vacas
Publisher : World Scientific
ISBN 13 : 9814555916
Total Pages : 730 pages
Book Rating : 4.8/5 (145 download)
Download or read book Pions In Nuclei - Proceedings Of The International Workshop written by M J Vicente-vacas and published by World Scientific. This book was released on 1992-03-27 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings reflect the recent experimental and theoretical progress in pion nuclear physics in topics like pionic atoms, pion absorption, charge exchange, (π, 2π), and others involving pions in nuclei using different probes, as electron photons or heavy ions. Related topics on chiral symmetry, low energy πN and (γ, π⁰) and quark degrees of freedom are also addressed.
Author : Arlene Paige Maclin
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.X/5 (1 download)
Download or read book Charge-exchange Scattering of Pions on Light Nuclei written by Arlene Paige Maclin and published by . This book was released on 1971 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William R. Gibbs
Publisher :
ISBN 13 :
Total Pages : 626 pages
Book Rating : 4.:/5 (45 download)
Download or read book Second LAMPF International Workshop on Pion-Nucleus Double Charge Exchange written by William R. Gibbs and published by . This book was released on 1990 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lowell Arthur Charlton
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.X/5 (4 download)
Download or read book Spin effects in pion charge-exchange scattering on nuclei written by Lowell Arthur Charlton and published by . This book was released on 1968 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daniel Wah-Tong Tow
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.X/5 (1 download)
Download or read book Pion Charge Exchange Reaction on Nuclei written by Daniel Wah-Tong Tow and published by . This book was released on 1973 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 1216 pages
Book Rating : 4.0/5 ( download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-06 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
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ISBN 13 :
Total Pages : 782 pages
Book Rating : 4.3/5 (129 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Torlief E. O. Ericson
Publisher : Univ of California Press
ISBN 13 : 0520333799
Total Pages : 872 pages
Book Rating : 4.5/5 (23 download)
Download or read book The Meson Factories written by Torlief E. O. Ericson and published by Univ of California Press. This book was released on 2023-11-15 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John B Mcclelland
Publisher : World Scientific
ISBN 13 : 9814553506
Total Pages : 182 pages
Book Rating : 4.8/5 (145 download)
Download or read book New Vistas In Physics With High-energy Pion Beams - Preconference Workshop, Dnp Fall Meeting 1992 written by John B Mcclelland and published by World Scientific. This book was released on 1993-04-27 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This workshop gives an overview of the physics opportunities that would be created by high-quality, intense pion beams with energies up to about 1 GeV. Topics explored include hypernuclear structure studies using the (π,K) reaction, hyperon-nucleon scattering including polarization, high-energy pion-nucleus reactions such as absorption and double charge exchange, baryon-resonance investigations, and decays of the π and h mesons. The present status of high-energy pion beamlines and instrumentation as well as new directions in the field were also discussed.
Author : United States. Congress. House. Committee on Science and Technology. Subcommittee on Energy Research and Production
Publisher :
ISBN 13 :
Total Pages : 1554 pages
Book Rating : 4.3/5 (91 download)
Download or read book Fiscal Year 1985 Department of Energy Authorization written by United States. Congress. House. Committee on Science and Technology. Subcommittee on Energy Research and Production and published by . This book was released on 1984 with total page 1554 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Recent Results in Hadronic Physics with Pions written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Three topics in modern hadronic physics are developed with regard to their fundamental importance to our understanding of the strong interaction in general and nuclei in particular. These three subjects are: low energy pion-nucleon scattering and charge exchange, the study of the three nucleon system with elastic scattering of pions, and double charge exchange of pions on nuclei. In each case the studies are presented in terms of the fundamental motivations underlying them and the spectacular new data which is bringing new insight into these areas. 20 refs., 11 figs.
Author :
Publisher :
ISBN 13 :
Total Pages : 1338 pages
Book Rating : 4.3/5 (243 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1970 with total page 1338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
