Title
| Seeking the purported magic number N= 32 with high-precision mass spectrometry |
Author(s)
| Grob, L K ; Schweikhard, L C ; Herfurth, F ; Boehm, C ; Manea, V ; Blaum, K ; Beck, D ; Kowalska, M ; Kreim, K D ; Stanja, J ; Audi, G ; Rosenbusch, M ; Wienholtz, F ; Litvinov, Y |
Experiment
| IS532 |
Greybook
| See IS532 experiment |
Approved
| 30 November 2011 |
Status
| Completed on 30 April 2020 |
Collaboration
| ISOLDE |
Accelerator
| CERN ISOLDE |
Abstract
| Accounting for the appearance of new magic numbers represents an exacting test for nuclear models. Binding energies offer a clear signature for the presence (or disappearance) of shell closures. To determine the strength of the purported N = 32 shell closure, we propose using the Penning-trap spectrometer ISOLTRAP for mass measurements of N = 34 isotones 58Cr (Z = 24), 55Sc (Z = 21) and 54Ca (Z = 20), as well as the N = 32 isotones 53Sc and 52Ca. We also propose measuring the mass of 60Cr to test the shell model prediction of a new magic number at N = 34. In addition to the Penning-trap system at ISOLTRAP, we intend to use the newly commissioned multi-reflection time-of-flight mass separator, which enables direct mass measurements on nuclei with half-lives below 50 ms. |
Related document(s)
| CERN-INTC-2011-053 (INTC-P-317)
|