Restoring the valence-shell stabilization in 140Nd
- Kern, R.
- Zidarova, R.
- Pietralla, N.
- Rainovski, G.
- Stegmann, R.
- Blazhev, A.
- Boukhari, A.
- Cederkäll, J.
- Cubiss, J. G.
- Djongolov, M.
- Fransen, C.
- Gaffney, L. P.
- Gladnishki, K.
- Giannopoulos, E.
- Hess, H.
- Jolie, J.
- Karayonchev, V.
- Kaya, L.
- Keatings, J. M.
- Kocheva, D.
- Kröll, Th.
- Möller, O.
- O'Neill, G. G.
- Pakarinen, J.
- Reiter, P.
- Rosiak, D.
- Scheck, M.
- Snall, J.
- Söderström, P.-A.
- Spagnoletti, P.
- Stoyanova, M.
- Thiel, S.
- Vogt, A.
- Warr, N.
- Welker, A.
- Werner, V.
- Wiederhold, J.
- De Witte, H.
Publication date
January 2020
DOI Publisher
American Physical Society (APS)Abstract
A projectile Coulomb-excitation experiment was performed at the radioactive-ion beam facility HIE-ISOLDE at CERN to obtain E2 and M1 transition matrix elements of 140Nd using the multistep Coulomb-excitation code GOSIA. The absolute M1 strengths, B(M1;2+2→2+1)=0.033(8)μ2N,B(M1;2+3→2+1)=0.26+0.11−0.10μ2N, and B(M1;2+4→2+1)<0.04μ2N, identify the 2+3 state as the main fragment of the one-quadrupole-phonon proton-neutron mixed-symmetry state of 140Nd. The degree of F-spin mixing in 140Nd was quantified with the determination of the mixing matrix element VF−mix<7+13−7keV.peerReviewe
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