Ab-initio calculations have been able to reproduce emergent phenomena such as the formation of clusters in nuclei, a prominent feature in light nuclei. A number of ab-initio methods have made predictions for the B(E2; 3/2 → 1/2) transition strength in the radioactive nucleus 7Be where a prominent α-3 He structure is expected. In order to test and guide these ab-inito methods, we have performed a Coulomb excitation experiment to measure the B(E2; 3/2 → 1/2) in 7Be. Our current results point to the importance of reproducing cluster features in our nuclear models.

1.
M.
Caprio
,
P.
Maris
, and
J. P.
Vary
,
Phys. Lett. B
719
,
179
184
(
2013
).
2.
M. A.
Caprio
,
P.
Maris
,
J. P.
Vary
, and
R.
Smith
,
Int. J. Mod. Phys. E
24
, p.
1541002
(
2015
).
3.
4.
T.
Heng
,
J. P.
Vary
, and
P.
Maris
,
Phys. Rev. C
95
, p.
014306
(
2017
).
5.
K. M.
Nollett
,
Phys. Rev. C
63
, p.
054002
(
2001
).
6.
M.
Pervin
,
S. C.
Pieper
, and
R. B.
Wiringa
,
Phys. Rev. C
76
, p.
064319
(
2007
).
7.
S.
Pastore
,
S. C.
Pieper
,
R.
Schiavilla
, and
R. B.
Wiringa
,
Phys. Rev. C
87
, p.
035503
(
2013
).
8.
J.
Dohet-Eraly
,
P.
Navrátil
,
S.
Quaglioni
,
W.
Horiuchi
,
G.
Hupin
, and
F.
Raimondi
,
Phys. Lett. B
757
,
430
436
(
2016
).
9.
S.
Quaglioni
, Private Communication,.
10.
F.
Becchetti
,
M.
Lee
,
T.
O’Donnell
,
D.
Roberts
,
J.
Kolata
,
L.
Lamm
,
G.
Rogachev
,
V.
Guimarães
,
P.
DeYoung
, and
S.
Vincent
,
Nucl. Instruments Methods Phys. Res. Sect. A Accel. Spectrometers, Detect. Assoc. Equip.
505
,
377
380
(
2003
).
11.
Micron semicondutor ltd
, http://www.micronsemiconductor.co.uk (), accessed: 2018-08-3.
12.
K.
Alder
,
A.
Bohr
,
T.
Huus
,
B.
Mottelson
, and
A.
Winther
,
Rev. Mod. Phys.
28
,
432
542
(
1956
).
13.
S.
Quaglioni
and
P.
Navrátil
,
Phys. Rev. C
79
, p.
044606
(
2009
).
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