Restoring the valence-shell stabilization in Nd 140

Summary, in English

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 Nd140 using the multistep Coulomb-excitation code gosia. The absolute M1 strengths, B(M1;22+→21+)=0.033(8)μN2,B(M1;23+→21+)=0.26-0.10+0.11μN2, and B(M1;24+→21+)<0.04μN2, identify the 23+ state as the main fragment of the one-quadrupole-phonon proton-neutron mixed-symmetry state of Nd140. The degree of F-spin mixing in Nd140 was quantified with the determination of the mixing matrix element VF-mix<7-7+13keV.

• Author: R. Kern; R. Zidarova; N. Pietralla; G. Rainovski; R. Stegmann; A. Blazhev; A. Boukhari; J. Cederkäll; J. G. Cubiss; M. Djongolov; C. Fransen; L. P. Gaffney; K. Gladnishki; E. Giannopoulos; H. Hess; J. Jolie; V. Karayonchev; L. Kaya; J. M. Keatings; D. Kocheva; Th Kröll; O. Möller; G. G. O'Neill; J. Pakarinen; P. Reiter; D. Rosiak; M. Scheck; J. Snall; P. A. Söderström; P. Spagnoletti; M. Stoyanova; S. Thiel; A. Vogt; N. Warr; A. Welker; V. Werner; J. Wiederhold; H. De Witte
• Department/s: Nuclear physics
• Publishing year: 2020
• Language: English
• Publication/Series: Physical Review C
• Volume: 102
• Issue: 4
• Links: http://dx.doi.org/10.1103/PhysRevC.102.041304
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 2469-9985