Observation of a spin-flip M1 transition in 7(lambda)Li.
Using a large-acceptance germanium detector array (Hyperball), we have observed a spin-flip M1 gamma transition between the ground-state spin doublet of (7)(Lambda)Li (3/2(+)-->1/2(+)). The observed energy of 691.7+/-0.6(stat)+/-1.0(syst) keV provides crucial information on the strength of the spin-spin interaction between a Lambda and a nucleon. This is the first observation of well-identified hypernuclear gamma transitions using germanium detectors.
Tamura
H
H
Department of Physics, Tohoku University, Sendai 980-8578, Japan.
Tanida
K
K
Abe
D
D
Akikawa
H
H
Araki
K
K
Bhang
H
H
Endo
T
T
Fujii
Y
Y
Fukuda
T
T
Hashimoto
O
O
Imai
K
K
Hotchi
H
H
Kakiguchi
Y
Y
Kim
J H
JH
Kim
Y D
YD
Miyoshi
T
T
Murakami
T
T
Nagae
T
T
Noumi
H
H
Outa
H
H
Ozawa
K
K
Saito
T
T
Sasao
J
J
Sato
Y
Y
Satoh
S
S
Sawafta
R I
RI
Sekimoto
M
M
Takahashi
T
T
Tang
L
L
Xia
H H
HH
Zhou
S H
SH
Zhu
L H
LH