Excitation and decay of the isovector giant monopole resonances via the 208Pb(3He,t p) reaction at 410 MeV.
The excitation and subsequent proton decay of the isovector spin-flip giant monopole resonance (IVSGMR) is studied via the 208Pb(3He,t) reaction at 410 MeV. In the inclusive spectrum (60+/-5)% of the non-energy-weighted sum-rule strength for this 2 variant Planck's over 2h omega resonance was found in the region 29<Ex(208Bi)<51 MeV. The central excitation energy and width of the IVSGMR are 37+/-1 MeV and 14+/-3 MeV, respectively. It is found that the branching ratio for proton decay is (52+/-12)% and that the deep neutron-hole states in 207Pb are strongly fed.
Zegers
R G T
RG
Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan.
Abend
H
H
Akimune
H
H
van den Berg
A M
AM
Fujimura
H
H
Fujita
H
H
Fujita
Y
Y
Fujiwara
M
M
Galès
S
S
Hara
K
K
Harakeh
M N
MN
Ishikawa
T
T
Kawabata
T
T
Kawase
K
K
Mibe
T
T
Nakanishi
K
K
Nakayama
S
S
Toyokawa
H
H
Uchida
M
M
Yamagata
T
T
Yamasaki
K
K
Yosoi
M
M