Isaiah Djianto
(Simon Fraser University)
One of the most prominent theories in describing nuclei is the nuclear shell model, which has accurately predicted many experimental trends in the atomic mass region of A=20-60 and beyond. One way to examine this model is by studying mirror nuclei-which have exchanged numbers of protons and neutrons. Differences between mirror nuclei's analogue nuclear levels and their decay patterns help in quantifying isospin symmetry in the nuclear force. Of particular interest is studying the neutron deficient Ar and compare its structure to its mirror nucleus S. Whilst S has been extensively studied, Ar has only been studied at low energies so far. In addition, shell model calculations of mirror energies for A=34 Ar-Cl-S seem to disagree with available experimental data.
Excited states were populated in the Ar nucleus by a fusion evaporation reaction at the Laboratori Nazionali Legnaro (LNL-INFN) in 2015 using a C beam to bombard a stationary Mg target, and by evaporation of two neutrons from the Ar compound nucleus. Other stronger channels were opened in this reaction which produce a high background with respect to the Ar spectrum. Gamma rays were detected by the GALILEO array composed of 25 HPGe detectors. The EUCLIDES charged particle detector associates charged particles being evaporated, whilst the neutron wall array tagged neutrons. Coincident events between the charged particles, neutrons, and gamma rays are used to create spectra of specific nuclei. Analysis of this experiment will serve to provide more experimental data for the shell model to better extend our understanding of nuclei in this mass region.
Isaiah Djianto
(Simon Fraser University)
C. Andreoiu
(Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada)
F.H. Garcia
(Department of Chemistry, Simon Fraser University, Burnaby, BC)
J.L. Pore
(Department of Chemistry, Simon Fraser University, Burnaby, BC)
Dr
A. Goasduff
(INFN Laboratori Nazionali di Legnaro)
Dr
D. Testov
(INFN Laboratori Nazionali di Legnaro)
Dr
G. Jaworsky
(INFN Laboratori Nazionali di Legnaro)
Dr
K. Hadynska
(INFN Laboratori Nazionali di Legnaro)
Dr
J. Mabiala
(INFN Laboratori Nazionali di Legnaro)
Dr
T. Marchi
(INFN Laboratori Nazionali di Legnaro)
Dr
D. Napoli
(INFN Laboratori Nazionali di Legnaro)
Dr
J.J. Valiente-Dobon
(INFN Laboratori Nazionali di Legnaro)
Dr
D. Menegazzo
(INFN Laboratori Nazionali di Legnaro)
Dr
D. Bazzacco
(INFN Laboratori Nazionali di Legnaro)
Dr
S.M. Lenzi
(Dipartimento di Fisica e Astronomia, Universita di Padova and INFN Sezione di Padova)
Dr
M. Siciliano
(Dipartimento di Fisica e Astronomia, Universita di Padova and INFN Sezione di Padova)
Dr
A. Boso
(Dipartimento di Fisica e Astronomia, Universita di Padova and INFN Sezione di Padova)
Dr
P.R. John
(Dipartimento di Fisica e Astronomia, Universita di Padova and INFN Sezione di Padova)
Dr
D. Mengoni
(Dipartimento di Fisica e Astronomia, Universita di Padova and INFN Sezione di Padova)
Dr
F. Recchia
(Dipartimento di Fisica e Astronomia, Universita di Padova and INFN Sezione di Padova)
Dr
B. Bastin
(GANIL)
Dr
A. Gadea
(Instituto de Fisical Corpuscular)
Dr
R. Austin
(St. Mary's University)
Dr
B. Melon
(INFN Sezione di Firenze)
Dr
M. Rochinni
(INFN Sezione di Firenze)
Dr
A. Nannini
(INFN Sezione di Firenze)
Dr
G. Benzoni
(INFN Sezione di Milano)
Dr
E. Sahin
(Department of Physics, University of Oslo)
Dr
J. Grebosz
(Instytut Fizyk Jadrowej PAN)
Dr
C. Petrache
(IPNO, CNRS, IN2P3 - Universite Paris-Sud)
