ITEM METADATA RECORD
Title: Competition between normal and intruder states inside the "island of inversion"
Authors: Tripathi, Vandana ×
Tabor, S. L
Mantica, P. F
Utsuno, Y
Bender, P
Cook, J
Hoffman, C. R
Lee, Sangjin
Otsuka, Taka
Pereira, J
Perry, M
Pepper, K
Pinter, J. S
Stoker, J
Volya, A
Weisshaar, D #
Issue Date: 2007
Publisher: Published for the American Physical Society by the American Institute of Physics
Series Title: Physical Review C, Nuclear Physics vol:76 issue:2
Article number: 021301(R)
Abstract: The
β

decay of the exotic
30
Ne (
N
=
20) is reported. For the first time, the low-energy level structure
of the
N
=
19
,
30
Na (
T
Z
=
4), is obtained from
β
-delayed
γ
spectroscopy using fragment-
β
-
γ
-
γ
coincidences.
The level structure clearly displays “inversion,” i.e., intruder states with mainly 2
p
2
h
configurations displacing
the normal states to higher excitation energies. The good agreement in excitation energies and the weak and
electromagnetic decay patterns with Monte Carlo shell model calculations with the SDPF-M interaction in the
sdpf
valence space confirms the small
d
3
/
2
-
f
7
/
2
shell gap. The relative position of the
normal dominant
and
intruder dominant
excited states provides valuable information to understand better the
N
=
20 shell gap.
ISSN: 0556-2813
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

Files in This Item:
File Description Status SizeFormat
PhysRevC.76.021301.pdf Published 216KbAdobe PDFView/Open

 


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science