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Crystal Ball Studies Of Giant Resonance Gamma Decay
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Book Synopsis Crystal Ball Studies of Giant Resonance Gamma Decay by :
Download or read book Crystal Ball Studies of Giant Resonance Gamma Decay written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have carried out coincidence experiments to investigate the photon and neutron emission from the giant resonance region in 2°8Pb and 9°Zr using the ORNL Spin Spectrometer, a 72-segment NaI detector system. States in 2°8Pb and 9°Zr were excited by inelastic scattering of 380-MeV 17O. We have determined the total gamma-decay probability, the ground-state gamma branching ratio, and the branching ratios to a number of low-lying states as a function of excitation energy in 2°8Pb to approx. 15 MeV. Especially interesting observations include the absence of a significant branch from the giant quadrupole resonance to the 3− state at 2.6 MeV, a strong branch from this resonance to a 3− state at 4.9 MeV, and the dominance of decays to various 1− states at 5 to 7 MeV from the region around 14 MeV of excitation (EO resonance). Comparable but less complete data were also obtained on 9°Zr. 14 references.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 780 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 1988 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Capture Gamma-ray Spectroscopy and Related Topics by :
Download or read book Capture Gamma-ray Spectroscopy and Related Topics written by and published by . This book was released on 1985 with total page 1022 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gamma Decay of Giant Resonances Excited by Heavy Ions by :
Download or read book Gamma Decay of Giant Resonances Excited by Heavy Ions written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments on 2°8Pb bombarded by 17O at 22 MeV/nucleon (ORNL) and 84 MeV nucleon (GANIL) are reviewed. Inelastically scattered projectiles were detected at forward angles in coincidence with gamma rays seen in NaI (ORNL) or in BaF2 (GANIL). The 17O were identified by 6 Si telescopes covering THETA = 11. 5/degree/--14.5/degree/ (ORNL) or by the focal-plane detector system of the energy-loss spectrometer SPEG, set to accept THETA = 1. 5/degree/--5.0/degree/ (GANIL). The .gamma.-ray data provide information on the multipole character of various parts of the giant resonance region, matrix elements between the GR region and low-lying states in 2°8Pb, and the relative contribution of direct and compound process to .gamma.0 decay. At the higher energy the 9--15 MeV GR region is excited very strongly. The isovector giant dipole is dominant over most of the angles studied. Significant contributions from the isoscalar giant quadrupole and monopole resonances are also present. Decomposition of the GR into L = 1, 2, and 0 components was based on coincidences with the overwhelmingly dipole .gamma.0 transitions. The magnitude (1.7 +- 0.2%) and energy distribution of the .gamma.0 branch can be reproduced well by a parameter-free calculation. The .gamma.0 decay of the isoscalar giant quadrupole resonance is more easily observed at the lower energy. The .gamma.0 angular correlations confirm the presence of E2 radiation from states in the 9--11 MeV region. The B(E2) implies that the ratio of neutron to proton matrix elements is consistent with the expected value of N/Z. This conclusion is confirmed by evidence form Coulomb-nuclear interference in the singles data at 84 MeV/nucleon. Photon decays to excited states indicate that 4 and/or 6/sup +/ strength is present around 9--10 MeV, and are consistent with a monopole contribution from 12.5--15.5 MeV. 20 refs., 14 figs.
Book Synopsis Capture Gamma-Ray Spectroscopy and Related Topics by : Sethu Raman
Download or read book Capture Gamma-Ray Spectroscopy and Related Topics written by Sethu Raman and published by American Institute of Physics. This book was released on 1985 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main topics discussed at the symposium were nuclear models and theory, photon-induced reactions, neutron-induced reactions, charged-particle-induced reactions, applications, including nucleosynthesis, and related topics. Separate entries were prepared for the data base for the papers presented.
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1983 with total page 668 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 1975-06 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Decay of the [gamma](1S) and [gamma](2S) Resonances to Muon Pairs and Determination of the Strong Coupling Constant Using the Crystal Ball Detector by : Michael Kobel
Download or read book Measurement of the Decay of the [gamma](1S) and [gamma](2S) Resonances to Muon Pairs and Determination of the Strong Coupling Constant Using the Crystal Ball Detector written by Michael Kobel and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Crystal Ball results on resonance formation in γγ-reactions [gamma-gamma-reactions] by : Johann K. Bienlein
Download or read book Recent Crystal Ball results on resonance formation in γγ-reactions [gamma-gamma-reactions] written by Johann K. Bienlein and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1985 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis Government Reports Annual Index: Keyword A-L by :
Download or read book Government Reports Annual Index: Keyword A-L written by and published by . This book was released on 1985 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of the Physical Society of Japan by : Nihon Butsuri Gakkai
Download or read book Journal of the Physical Society of Japan written by Nihon Butsuri Gakkai and published by . This book was released on 1985 with total page 838 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 1988 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Crystal Ball Results on Resonance Formation in [gamma Gamma]-reactions by : J. K. Bienlein
Download or read book Recent Crystal Ball Results on Resonance Formation in [gamma Gamma]-reactions written by J. K. Bienlein and published by . This book was released on 1990 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of 1984 INS-RIKEN International Symposium on Heavy Ion Physics, Tokyo, August 24-25, 1984: Heavy ion nuclear physics by : Akito Arima
Download or read book Proceedings of 1984 INS-RIKEN International Symposium on Heavy Ion Physics, Tokyo, August 24-25, 1984: Heavy ion nuclear physics written by Akito Arima and published by . This book was released on 1985 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1985 with total page 1206 pages. Available in PDF, EPUB and Kindle. Book excerpt: