One-phonon states in deformed nuclei with isoscalar and isovector interactions

Malov, L.A.; Nesterenko, V. O.; Соловьев, В.Г.

doi:10.1007/bf01041442

Cited by 17 publications

(9 citation statements)

References 5 publications

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“…In our results, strength functions calculated with MQRPA are smeared with a Lorentzian-averaging function having a width Γ = 2γ. Such an averaging can be associated with complex QRPA frequencies ω + iγ that are introduced in the context of strength function technique with schematic interactions [1,[36][37][38]. In fact, strength functions obtained in such a way do not require knowledge of individual RPA eigenvalues; the summation over the RPA spectrum is replaced by integration over energy (see also Refs.…”

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confidence: 99%

Monopole strength function of deformed superfluid nuclei

et al. 2011

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We present an efficient method for calculating strength functions using the finite amplitude method (FAM) for deformed superfluid heavy nuclei within the framework of the nuclear density functional theory. We demonstrate that FAM reproduces strength functions obtained with the fully self-consistent quasi-particle random-phase approximation (QRPA) at a fraction of computational cost. As a demonstration, we compute the isoscalar and isovector monopole strength for strongly deformed configurations in 100 Zr and 240 Pu by considering huge quasi-particle QRPA spaces. Our approach to FAM, based on Broyden's iterative procedure, opens the possibility for large-scale calculations of strength distributions in well-deformed superfluid nuclei across the nuclear landscape.

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confidence: 99%

Monopole strength function of deformed superfluid nuclei

et al. 2011

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“…Analysis of status of the problem from the point of view of both theoretical ideas and totality of experimental data allows one to expect for maximal discrepancy between experimental data and hypothesis [1] in region of maximal widths. In practice, it can be caused by influence [2] of large components of wave functions of nuclear states with maximal number of quasi-particles and phonons owing to their weak fragmentation [3] in the excitation energy region E ex ≈ B n .…”

Section: Choice Of Experimental Data Presentation Formmentioning

confidence: 99%

Parameters of the best approximation for distribution of the reduced neutron widths. Specificity of full-scale method of analysis

Sukhovoj¹,

Khitrov²

2011

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The method is described and tested for analysis of statistical parameters of reduced neutron widths distributions accounting for possibility of coexistence of superposition of some functions with non-zero mean values of neutron amplitude and its arbitrary dispersion. The possibility to obtain reliable values of distribution parameters at variation of number of resonances involved in analysis and change of registration threshold of resonances with the lowest widths is studied.

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“…1. There are: a) Analysis of fragmentation of nuclear states of different complexity [20] showed strong irregularity of this process. At any nuclear excitation energy, wave functions of levels can contain large components of different type.…”

Section: Two-step Reactionmentioning

confidence: 99%

Possibility of Experimental Determination of Reliable Parameters of the Compound-State Gamma-Decay and Some Errors of Analysis: Mo-96 as an Example

Sukhovoj,

Khitrov

2009

Preprint

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Comparison between potential possibilities and inevitable systematic errors of one-and two-step reactions for obtaining of maximum reliable data on level density and radiative strength functions after decay of excited levels of complicated nuclei has been performed. It was shown that the use for this aim of two-step reactions instead of one-step reactions provides for potential possibility to decrease systematical errors of mentioned nuclear parameters, as minimum, by several times.

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One-phonon states in deformed nuclei with isoscalar and isovector interactions

Cited by 17 publications

References 5 publications

Monopole strength function of deformed superfluid nuclei

Monopole strength function of deformed superfluid nuclei

Parameters of the best approximation for distribution of the reduced neutron widths. Specificity of full-scale method of analysis

Possibility of Experimental Determination of Reliable Parameters of the Compound-State Gamma-Decay and Some Errors of Analysis: Mo-96 as an Example

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