Nuclei away from the line of stability have been found to demonstrate behavior that is inconsistent with the traditional magic numbers of the spherical shell model. This has led to the concept of the evolution of nuclear shell structure in exotic nuclei, and the neutron-rich calcium isotopes are a key testing ground of these theories; there have been conflicting results from various experiments as to the true nature of a sub-shell closure for neutron-rich nuclei around $^{52}$Ca. An experiment was performed at the ISAC facility of TRIUMF; $^{52}$K, $^{53}$K, and $^{54}$K were delivered to the GRIFFIN gamma-ray spectrometer paired with the SCEPTAR and the ZDS ancillary detectors for beta-tagging, as well as DESCANT for neutron-tagging. Using this powerful combination of detectors, we combine the results to construct level schemes for the isotopes populated in the subsequent beta-decay. Preliminary results from the analysis of the gamma, beta, and neutron spectra will be presented and discussed in the context of shell model calculations in neutron-rich nuclei.
| Keyword-1 |
Shell Model
|
| Keyword-2 |
Calcium
|
| Keyword-3 |
Beta-decay
|
Robin Coleman
Tammy Zidar
(University of Guelph)
Mr
A. Talebitaher
(Unviersity of Regina)
Dr
A.B. Garnsworthy
(TRIUMF)
Dr
Alex Laffoley
(University of Guelph (CA))
Allison Radich
(University of Guelph)
Andrew MacLean
(University of Guelph)
Dr
Bruno Olaizola
(CERN)
Dr
C. Paxman
(TRIUMF)
Mr
C.R. Natzke
(Colorado School of Mines)
Carl Svensson
(University of Guelph)
Carlotta Porzio
(Università degli Studi di Milano, TRIUMF)
Christopher Griffin
Corina Andreoiu
(Simon Fraser University)
Daniel Aaron Yates
(TRIUMF (CA))
Fatima H Garcia
(Simon Fraser University)
Frank (Tongan) Wu
(Simon Fraser University)
Dr
Fred Sarazin
(Colorado School of Mines)
Dr
G. Carpenter
(TRIUMF)
Gordon Ball
(TRIUMF)
Prof.
Gwen Grinyer
Harris Bidaman
(University of Guelph)
Kenneth Whitmore
(Simon Fraser University)
Ms
M. Hanley
(Colorado School of Mines)
Marco Rocchini
(Universita e INFN, Firenze (IT))
Matthew Martin
(Simon Fraser University)
Paul. E Garrett
(Department of Physics, University of Guelph)
Dr
R.S. Lubna
(TRIUMF)
Mr
S. Shadrick
(Colorado School of Mines)
Ms
S. Sharma
(University of Regina)
Samantha Buck
(University of Guelph)
Soumendu Sekhar Bhattacharjee
(TRIUMF)
Victoria Vedia
(TRIUMF)
Vinzenz Bildstein
(Department of Physics, University of Guelph)
There are no materials yet.
