Levels and γ-ray transitions in 190Os, a perturbed O(6) nucleus

Casten, R. F.; Macphail, M.R.; Kane, W.R.; Breitig, D.; Schreckenbach, K.; Cizewski, J. A.

doi:10.1016/0375-9474(79)90673-0

Cited by 25 publications

(3 citation statements)

References 24 publications

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“…Shown as full line in blue is the prediction with minor strength and photo-neutron data for nat Er(γ,xn) [132] are depicted as black x-symbols. Os derived from ARC data (magenta diamonds [133]) and from the cross section of photo-neutron production (black dots [134]). For comparison the TLO result is shown as before (see the caption of Fig.…”

Section: Even-even Nucleimentioning

confidence: 99%

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Breaking of axial symmetry in excited heavy nuclei as identified in giant dipole resonance data

2017

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Abstract. A recent theoretical prediction of a breaking of axial symmetry in quasi all heavy nuclei is confronted to a new critical analysis of photon strength functions of nuclei in the valley of stability. For the photon strength in the isovector giant dipole resonance (IVGDR) regime a parameterization of GDR shapes by the sum of three Lorentzians (TLO) is extrapolated to energies below and above the IVGDR. The impact of non-GDR modes adding to the low energy slope of photon strength is discussed including recent data on photon scattering and other radiative processes. These are shown to be concentrated in energy regions where various model calculations predict intermediate collective strength; thus they are obviously separate from the IVGDR tail. The triple Lorentzian (TLO) ansatz for giant dipole resonances is normalized in accordance to the dipole sum rule. The nuclear droplet model with surface dissipation accounts well for positions and widths without local, nuclide specific, parameters. Very few and only global parameters are needed when a breaking of axial symmetry already in the valley of stability is admitted and hence a reliable prediction for electric dipole strength functions also outside of it is expected.

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Section: Even-even Nucleimentioning

confidence: 99%

“…11. (Color online) Photon strength for 190 Os derived from ARC data (magenta diamonds[133]) and from the cross section of photo-neutron production (black dots[134]). For comparison the TLO result is shown as before (see the caption of Fig.3).…”

mentioning

confidence: 99%

Breaking of axial symmetry in excited heavy nuclei as identified in giant dipole resonance data

2017

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“…For these nuclei strength function data in the GDR region [10,22] and below the neutron threshold are available. If for the latter ARC-data are used, their cross section had to be normalized such that strength below the gamma ray detection limit is accounted for [23,24]. In the photon scattering studies at ELBE [8] both the resolved strength and unresolved strength were separated by a deconvolution procedure.…”

Section: Comparison To Experimental Datamentioning

confidence: 99%

Photon strength in spherical and deformed heavy nuclei

Grosse

Junghans

Bečvář

et al. 2010

EPJ Web of Conferences

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Abstract. Information on the photon strength in heavy nuclei with mass A>150 will be given and compared to respective data. The photon strength function is a very important ingredient for statistical model calculations -especially when these are used to describe neutron capture. Several schemes for a transmutation of radioactive waste favor nuclear reactions with fast neutrons and these also influence the performance of various reactor types proposed to deliver nuclear energy together with only small quantities of such waste. Reactions with fast neutrons are less well studied as compared to those induced by thermal neutrons. As they are not easily accessible experimentally, reference is often made to calculations using the statistical model. Photon emission probabilities are needed as input to such calculations aiming for predictions on fission to capture ratios. Results of approximate calculations for radiative neutron capture will be presented.

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Overview of Experimental Tests of the Interacting Boson Approximation (IBA)

Casten

1982

Contemporary Research Topics in Nuclear Physics

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Levels and γ-ray transitions in 190Os, a perturbed O(6) nucleus

Cited by 25 publications

References 24 publications

Breaking of axial symmetry in excited heavy nuclei as identified in giant dipole resonance data

Breaking of axial symmetry in excited heavy nuclei as identified in giant dipole resonance data

Photon strength in spherical and deformed heavy nuclei

Overview of Experimental Tests of the Interacting Boson Approximation (IBA)

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