ISOLDE Workshop and Users meeting 2016

Session

Nuclear Structure 2

8 Dec 2016, 15:45

503/1-001 - Council Chamber (CERN)

Conveners

Nuclear Structure 2

• Klaus Wendt (Johannes-Gutenberg-Universitaet Mainz (DE))

63. Isospin mixing in nuclear states studied via beta-delayed proton emission

Nadya Smirnova (Centre d'Etudes Nucléaires de Bordeaux-Gradignan)

08/12/2016, 15:45

Invited

We discuss a current status of the shell-model calculations with charge-dependent Hamiltonians. In an empirical approach, such a Hamiltonian includes a two-body Coulomb interaction and effective charge-dependent forces of nuclear origin, resulting in five or six additional parameters for an sd or pf shell, respectively.The accuracy of the method is demonstrated on the description of...

23. Results from IDS

Razvan Lica (IFIN-HH (RO))

08/12/2016, 16:15

Invited

A summary of the 2016 experimental campaign at the ISOLDE Decay Station will be presented alongside the preliminary results. The presentation will also include highlights of the already published results concerning the fast-timing study of 129Sn, the beta-delayed proton emission measurement of 20Mg and the 31Ar multi-particle decay experiment.

38. Precision mass measurements of neutron-rich chromium isotopes and the development of ground-state collectivity towards N=40

Maxime Mougeot (CSNSM Centre de Sciences Nucléaires et de Sciences de la matière)

08/12/2016, 16:45

Submitted

Exotic neutron-rich nuclei around N=40 exhibit rapid structural changes with proton and neutron number. While ⁶⁸Ni₄₀ shows signatures of a doubly magic nucleus, excitation energies and transition strengths suggest a rapid development of collectivity in the ground state of neutron-rich ₂₆Fe and ₂₄Cr isotopes towards N=40. Accurate masses in this...

18. High-sensitivity and high-resolution laser spectroscopy of 76,77,78Cu at CRIS

Ruben Pieter De Groote (KU Leuven (BE))

08/12/2016, 17:00

Submitted

The Collinear Resonance Ionization Spectroscopy experiment (CRIS) at ISOLDE combines the high sensitivity of resonance ionization spectroscopy with the high resolution offered by collinear laser spectroscopy. The first experiments at CRIS demonstrated the ability to reach exotic isotopes, normally out of reach for collinear laser spectroscopy methods based on photon detection, with an...

44. Collinear Laser Spectroscopy of Bismuth at COLLAPS- The complementarity of optical and non-optical laser spectroscopy techniques.

Mark Bissell (University of Manchester (GB))

08/12/2016, 17:15

Submitted

Bunched-beam collinear laser spectroscopy was added to the extensive list of techniques used to study the Bi isotopic chain at ISOLDE. The atomic hyperfine splitting in the transition previously employed for in-source laser spectroscopy was not fully resolved in the in-source measurements. As Bi is a well-known example of the Bohr-Weisskopf effect or “Hyperfine anomaly”, it became apparent...

15. Multi-particle emission from 31Ar at IDS

Irene Marroquin Alonso (Consejo Superior de Investigaciones Cientificas (CSIC) (ES))

08/12/2016, 17:30

Submitted

In the beta decay of exotic nuclei, far from stability, the daughter nuclei might be formed in an excited state, which is unstable against particle emission. This phenomenon is called β-delayed particle emission and is due to a high Q-value and low separation energy for particle emission. The decay of the proton drip-line nucleus $^{31}$Ar is one of the most exotic β-delayed multi-particle...