%0 Journal Article %1 ISI:000074520300002 %A Enders, J %A von Brentano, P %A Eberth, J %A Herzberg, RD %A Huxel, N %A Lenske, H %A von Neumann-Cosel, P %A Nicolay, N %A Pietralla, N %A Prade, H %A Reif, J %A Richter, A %A Schlegel, C %A Schwengner, R %A Skoda, S %A Thomas, HG %A Wiedenhover, I %A Winter, G %A Zilges, A %D 1998 %J Nuclear Physics A %K imported myown zilges %N 2 %P 139-155 %R 10.1016/S0375-9474(98)00213-9 %T Photon scattering off Cr-52: Two-phonon E1 strength at the N=28 shell closure? %V 636 %X Results of a Cr-nat(gamma, gamma') experiment at the S-DALINAC are reported for energies up to 7 MeV utilizing a Euroball Cluster detector. The excitation of a J = 1 state at 5544 keV is observed which is believed to belong to Cr-52 because of the strength of the signal and the large natural abundance. By a variety of empirical arguments a quadrupole-octupole-coupled two-phonon 1(-) character is suggested for this transition. Quasiparticle random-phase-approximation (QRPA) calculations are able to reproduce the energy and B(E1) transition strength remarkably well. The underlying microscopic structure is suggested to be more complex than a pure two-phonon picture. Furthermore, the calculations indicate a pure neutron (2p(3/2)(-1)2p(1/2)) magnetic dipole structure for an excitation experimentally seen at 5098 keV which would provide a direct measure of ground-state correlations in Cr-52. (C) 1998 Elsevier Science B.V.

@article{ISI:000074520300002, abstract = {Results of a Cr-nat(gamma, gamma') experiment at the S-DALINAC are reported for energies up to 7 MeV utilizing a Euroball Cluster detector. The excitation of a J = 1 state at 5544 keV is observed which is believed to belong to Cr-52 because of the strength of the signal and the large natural abundance. By a variety of empirical arguments a quadrupole-octupole-coupled two-phonon 1(-) character is suggested for this transition. Quasiparticle random-phase-approximation (QRPA) calculations are able to reproduce the energy and B(E1) transition strength remarkably well. The underlying microscopic structure is suggested to be more complex than a pure two-phonon picture. Furthermore, the calculations indicate a pure neutron (2p(3/2)(-1)2p(1/2)) magnetic dipole structure for an excitation experimentally seen at 5098 keV which would provide a direct measure of ground-state correlations in Cr-52. (C) 1998 Elsevier Science B.V.}, added-at = {2019-11-20T10:09:48.000+0100}, author = {Enders, J and von Brentano, P and Eberth, J and Herzberg, RD and Huxel, N and Lenske, H and von Neumann-Cosel, P and Nicolay, N and Pietralla, N and Prade, H and Reif, J and Richter, A and Schlegel, C and Schwengner, R and Skoda, S and Thomas, HG and Wiedenhover, I and Winter, G and Zilges, A}, biburl = {https://www.bibsonomy.org/bibtex/2f670dbc40070b723a85f49e346e75f6e/ikpcologne}, doi = {10.1016/S0375-9474(98)00213-9}, interhash = {c9b43ec3e0be09f0935c36af6a31b576}, intrahash = {f670dbc40070b723a85f49e346e75f6e}, issn = {0375-9474}, journal = {Nuclear Physics A}, keywords = {imported myown zilges}, month = {JUN 22}, number = 2, orcid-numbers = {Enders, Joachim/0000-0002-8441-378X Pietralla, Norbert/0000-0002-4797-3032 Schwengner, Ronald/0000-0002-7620-8882 von Neumann-Cosel, Peter/0000-0002-0256-5940}, pages = {139-155}, researcherid-numbers = {Zilges, Andreas/G-9984-2011 Enders, Joachim/B-5501-2009 Herzberg, Rolf-Dietmar/E-1558-2011 Pietralla, Norbert/L-8465-2017 Schwengner, Ronald/Q-5959-2017}, timestamp = {2019-11-20T10:09:48.000+0100}, title = {Photon scattering off Cr-52: Two-phonon E1 strength at the N=28 shell closure?}, unique-id = {ISI:000074520300002}, volume = 636, year = 1998 }