Identification of 100Sn

Schneider, Roland; Friese, J.; Reinhold, J.; Zeitelhack, K.; Gernhäuser, R.; Gilg, H. Albert; Heine, F.; Homolka, J.; Kienle, Paul; Körner, H. J.; Geißel, H.; Münzenberg, G.; Sümmerer, K.

doi:10.1016/0375-9474(94)00773-g

Cited by 16 publications

(57 citation statements)

References 6 publications

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“…A well-defined spherical minimum and a pronounced shoulder at a deformation around β 2 = 0.5 are obtained for SLy4, SLy5 and the TIJ parameterizations. This structure in the energy curve is at a position qualitatively in agreement with the properties of a superdeformed rotational band observed in 56 Ni [38].…”

Section: Deformation Energy and Its Tensor Term Contributionsupporting

confidence: 86%

“…The spin-orbit splitting of the 1f levels obtained with SLy5+T is much larger than with SLy5, while that of SLy4T is smaller than that of SLy4. The good agreement with experiment obtained with SLy4T is not surprising since 56 Ni is one of the data that has been used to adjust the spinorbit and tensor strengths. The origin of the differences between these interactions is the additional reduction of the spin-orbit force in SLy4T, to about 2/3 of its original value.…”

Section: Decomposition Of the Tensor Termssupporting

confidence: 69%

“…The contribution from central and tensor parts cancel nearly exactly for T22 for all deformations. As exemplified by T26, the contributions from the central and tensor forces to the tensor terms have the same sign for 56 Ni for all other TIJ parameterizations that have zero or positive values for C J 0 and C J 1 . In Fig.…”

Section: Decomposition Of the Tensor Termsmentioning

confidence: 90%

“…Let us start our study by looking in detail into 56 Ni, the lightest doubly-magic nucleus with major proton and neutron shell closures due to the spin-orbit interaction. The values and systematics of static [34] and transition moments [35] of low-lying states around 56 Ni suggest that it is not as good an inert magic core as other doublymagic nuclei.…”

Section: Nimentioning

confidence: 99%

“…3 shows here the absolute values for the total binding energy and the tensor contributions. The binding energy of 56 Ni is included in the data the TIJ parameterizations are adjusted to and, indeed, the total energy (lower left panel) differs by only a few 100 keV at sphericity. Also, as already pointed out, the deformation energy curves obtained with the three parameterizations differ by less than 2 MeV.…”

Section: Contributions To the Total Energymentioning

confidence: 99%

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Tensor part of the Skyrme energy density functional. II. Deformation properties of magic and semi-magic nuclei

et al. 2009

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We study systematically the impact of the time-even tensor terms of the Skyrme energy density functional, i.e. terms bilinear in the spin-current tensor density, on deformation properties of closed shell nuclei corresponding to 20, 28, 40, 50, 82, and 126 neutron or proton shell closures. We compare results obtained with three different families of Skyrme parameterizations whose tensor terms have been adjusted on properties of spherical nuclei:(i)T IJ interactions proposed in the first paper of this series [T. Lesinski et al., Phys. Rev. C 76, 014312 (2007)] which were constructed through a complete readjustment of the rest of the functional (ii) parameterizations whose tensor terms have been added perturbatively to existing Skyrme interactions, with or without readjusting the spin-orbit coupling constant. We analyse in detail the mechanisms at play behind the impact of tensor terms on deformation properties and how studying the latter can help screen out unrealistic parameterizations. It is expected that findings of the present paperare to a large extent independent of remaining deficiencies of the central and spin-orbit interactions, and will be of great value for the construction of future, improved energy functionals.

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Section: Deformation Energy and Its Tensor Term Contributionsupporting

confidence: 86%

Section: Decomposition Of the Tensor Termssupporting

confidence: 69%

Section: Decomposition Of the Tensor Termsmentioning

confidence: 90%

Section: Nimentioning

confidence: 99%

Section: Contributions To the Total Energymentioning

confidence: 99%

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Tensor part of the Skyrme energy density functional. II. Deformation properties of magic and semi-magic nuclei

et al. 2009

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Mass and lifetime measurements of exotic nuclei in storage rings

Franzke

Geißel

Münzenberg

2008

Mass Spectrometry Reviews

216

189

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Mass and lifetime measurements lead to the discovery and understanding of basic properties of matter. The isotopic nature of the chemical elements, nuclear binding, and the location and strength of nuclear shells are the most outstanding examples leading to the development of the first nuclear models. More recent are the discoveries of new structures of nuclides far from the valley of stability. A new generation of direct mass measurements which allows the exploration of extended areas of the nuclear mass surface with high accuracy has been opened up with the combination of the Experimental Storage Ring ESR and the FRragment Separator FRS at GSI Darmstadt. In-flight separated nuclei are stored in the ring. Their masses are directly determined from the revolution frequency. Dependent on the half-life two complementary methods are applied. Schottky Mass Spectrometry SMS relies on the measurement of the revolution frequency of electron cooled stored ions. The cooling time determines the lower half-life limit to the order of seconds. For Isochronous Mass Spectrometry IMS the ring is operated in an isochronous ion-optical mode. The revolution frequency of the individual ions coasting in the ring is measured using a time-of-flight method. Nuclides with lifetimes down to microseconds become accessible. With SMS masses of several hundreds nuclides have been measured simultaneously with an accuracy in the 2 x 10(-7)-range. This high accuracy and the ability to study large areas of the mass surface are ideal tools to discover new nuclear structure properties and to guide improvements for theoretical mass models. In addition, nuclear half-lives of stored bare and highly charged ions have been measured. This new experimental development is a significant progress since nuclear decay characteristics are mostly known for neutral atoms. For bare and highly charged ions new nuclear decay modes become possible, such as bound-state beta decay. Dramatic changes in the nuclear lifetime have been observed in highly charged ions compared to neutral atoms due to blocking of nuclear decay channels caused by the modified atomic interaction. High ionization degrees prevail in hot stellar matter and thus these experiments have great relevance for the understanding of the synthesis of elements in the universe and astrophysical scenarios in general.

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