Reaction cross section of the two-neutron halo nucleus $^{22}C$ At 235 MeV/nucleon
Yasuhiro Togano
(1)
,
T. Nakamura
(1)
,
Y. Kondo
(1)
,
N. Kobayashi
(1)
,
R. Tanaka
(1)
,
R. Minakata
(1)
,
S. Ogoshi
(1)
,
S. Nishi
(1)
,
D. Kanno
(1)
,
T. Nakashima
(1)
,
J. Tsubota
(1)
,
A.T. Saito
(1)
,
J.A. Tostevin
(2)
,
N.A. Orr
(3)
,
J. Gibelin
(3)
,
F. Delaunay
(3)
,
F.M. Marques
(3)
,
N.L. Achouri
(3)
,
S. Leblond
(3)
,
Q. Deshayes
(3)
,
K. Yoneda
(4)
,
T. Motobayashi
(4)
,
H. Otsu
(4)
,
T. Isobe
(4)
,
H. Baba
(4)
,
H. Sato
(4)
,
Y. Shimizu
(4)
,
T. Kubo
(4)
,
N. Inabe
(4)
,
N. Fukuda
(4)
,
D. Kameda
(4)
,
H. Suzuki
(4)
,
H. Takeda
(4)
,
J.H. Lee
(4)
,
P. Doornenbal
(4)
,
S. Takeuchi
(4)
,
T. Kobayashi
(5)
,
K. Takahashi
(5)
,
K. Muto
(5)
,
T. Murakami
(6)
,
N. Nakatsuka
(6)
,
Y. Satou
(7)
,
S. Kim
(7)
,
J. Hwang
(7)
,
T. Aumann
(8)
,
D. Murai
(9)
,
A. Navin
(10)
,
A.G. Tuff
(11)
,
M. Vandebrouck
(12)
1
Department of Physics [Tokyo]
2 UNIS - University of Surrey
3 LPCC - Laboratoire de physique corpusculaire de Caen
4 RIKEN RNC - RIKEN Nishina Center for Accelerator-Based Science [Wako]
5 Tohoku University [Sendai]
6 Kyoto University
7 SNU - Seoul National University [Seoul]
8 Institut für Kernphysik [Darmstadt]
9 Rikkyo University [Tokyo]
10 GANIL - Grand Accélérateur National d'Ions Lourds
11 University of York [York, UK]
12 IPNO - Institut de Physique Nucléaire d'Orsay
2 UNIS - University of Surrey
3 LPCC - Laboratoire de physique corpusculaire de Caen
4 RIKEN RNC - RIKEN Nishina Center for Accelerator-Based Science [Wako]
5 Tohoku University [Sendai]
6 Kyoto University
7 SNU - Seoul National University [Seoul]
8 Institut für Kernphysik [Darmstadt]
9 Rikkyo University [Tokyo]
10 GANIL - Grand Accélérateur National d'Ions Lourds
11 University of York [York, UK]
12 IPNO - Institut de Physique Nucléaire d'Orsay
Résumé
The reaction cross section (σR) of the very neutron-rich carbon isotope 22C has been measured on a carbon target at 235 MeV/nucleon. A σR of 1.280 ± 0.023 b was obtained for 22C, significantly larger than those for the neighboring isotopes, supporting the halo character of 22C. A 22C root-mean-squared matter radius of 3.44±0.08 fm was deduced using a four-body Glauber reaction model. This value is smaller than an earlier estimate of 5.4±0.9 fm derived from a σR measurement on a hydrogen target at 40 MeV/nucleon.
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