Coulomb dissociation of 8B and the low-energy cross section of the 7Be(p,gamma)8B solar fusion reaction.
An exclusive measurement of the Coulomb breakup of 8B into 7Be+p at 254A MeV allowed the study of the angular correlations of the breakup particles. These correlations demonstrate clearly that E1 multipolarity dominates and that E2 multipolarity can be neglected. By using a simple single-particle model for 8B and treating the breakup in first-order perturbation theory, we extract a zero-energy S factor of S17(0)=18.6+/-1.2+/-1.0 eV b, where the first error is experimental and the second one reflects the theoretical uncertainty in the extrapolation.
Schümann
F
F
Institut für Physik mit Ionenstrahlen, Ruhr-Universität Bochum, D-44780 Bochum, Germany.
Hammache
F
F
Typel
S
S
Uhlig
F
F
Sümmerer
K
K
Böttcher
I
I
Cortina
D
D
Förster
A
A
Gai
M
M
Geissel
H
H
Greife
U
U
Iwasa
N
N
Koczoń
P
P
Kohlmeyer
B
B
Kulessa
R
R
Kumagai
H
H
Kurz
N
N
Menzel
M
M
Motobayashi
T
T
Oeschler
H
H
Ozawa
A
A
Płoskoń
M
M
Prokopowicz
W
W
Schwab
E
E
Senger
P
P
Strieder
F
F
Sturm
C
C
Sun
Zhi-Yu
ZY
Surówka
G
G
Wagner
A
A
Waluś
W
W