Experimental study of high-lying states in $^{28}$Mg using the resonant elastic scattering of α particles
J. Walshe
(1)
,
M. Freer
(1)
,
C. Wheldon
(1)
,
A. Soylu
(2)
,
N.L. Achouri
(3)
,
N. Ashwood
(1)
,
N. Catford
(4)
,
I. C. Celik
(4)
,
N. Curtis
(1)
,
F. Delaunay
(3)
,
B. Fernández-Domínguez
(5)
,
L. Grassi
(6)
,
Tz. Kokalova
(1)
,
F.M. Marqués
(3)
,
N.A. Orr
(3)
,
L. Prepolec
(6)
,
V. Scuderi
(7)
,
N. Soić
(6)
,
V. Tokić
(6)
N.L. Achouri
- Fonction : Auteur
- PersonId : 940560
- ORCID : 0000-0003-4411-6796
- IdRef : 069739773
F. Delaunay
- Fonction : Auteur
- PersonId : 740010
- IdHAL : franck-l-delaunay
- ORCID : 0000-0002-1703-2434
- IdRef : 089345819
F.M. Marqués
- Fonction : Auteur
- PersonId : 941129
- ORCID : 0000-0002-9456-6448
N.A. Orr
- Fonction : Auteur
- PersonId : 940479
- ORCID : 0000-0002-8499-8693
Résumé
The excitation function of Mg28 above the α-decay threshold has been measured for the first time using the resonant scattering of α particles with the technique of a thick target in inverse kinematics. Thirteen new states are reported between Ex=15.5 and Ex=20.5 MeV, and suggestions for spin-parity assignments are given for two of these. Calculations of the branching ratio to α decay for these states as well as comparison of the measured cross sections to calculations suggest that α+Neg.s.24 clustering is not dominant in this energy regime.