TY - JOUR
T1 - Direct proton decay of the isoscalar giant dipole resonance in 208Pb
AU - Nayak, B. K.
AU - Garg, U.
AU - Koss, M.
AU - Li, T.
AU - Martis, E.
AU - Fujimura, H.
AU - Fujiwara, M.
AU - Hara, K.
AU - Kawase, K.
AU - Nakanishi, K.
AU - Obayashi, E.
AU - Yoshida, H. P.
AU - Itoh, M.
AU - Kishi, S.
AU - Sakaguchi, H.
AU - Takeda, H.
AU - Uchida, M.
AU - Yasuda, Y.
AU - Yosoi, M.
AU - Zegers, R. G.T.
AU - Akimune, H.
AU - Harakeh, M. N.
AU - Hunyadi, M.
N1 - Funding Information:
The authors acknowledge the staff of the RCNP ring cyclotron for providing a high-quality, halo-free α beam during the experiment. This work was supported in part by the US–Japan Cooperative Science Program of the JSPS, the US National Science Foundation (grant Nos. INT-9910015, PHY04-57120 and PHY07-581100), and the University of Notre Dame.
PY - 2009/4/27
Y1 - 2009/4/27
N2 - The excitation and subsequent proton decay of the isoscalar giant dipole resonance (ISGDR) in 208Pb have been investigated via the 208Pb (α, α′ p) 207Tl reaction at 400 MeV. Excitation of the ISGDR has been identified by the difference-of-spectra method. The enhancement of the ISGDR strength at high excitation energies observed in the multipole-decomposition-analysis of the singles 208Pb (α, α′) spectra is not present in the excitation energy spectrum obtained in coincidence measurement. The partial branching ratios for direct proton decay of ISGDR to low-lying states of 207Tl have been determined and the results are compared with predictions of continuum random-phase-approximation (CRPA) calculations.
AB - The excitation and subsequent proton decay of the isoscalar giant dipole resonance (ISGDR) in 208Pb have been investigated via the 208Pb (α, α′ p) 207Tl reaction at 400 MeV. Excitation of the ISGDR has been identified by the difference-of-spectra method. The enhancement of the ISGDR strength at high excitation energies observed in the multipole-decomposition-analysis of the singles 208Pb (α, α′) spectra is not present in the excitation energy spectrum obtained in coincidence measurement. The partial branching ratios for direct proton decay of ISGDR to low-lying states of 207Tl have been determined and the results are compared with predictions of continuum random-phase-approximation (CRPA) calculations.
UR - http://www.scopus.com/inward/record.url?scp=63749090756&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=63749090756&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2009.03.047
DO - 10.1016/j.physletb.2009.03.047
M3 - Article
AN - SCOPUS:63749090756
VL - 674
SP - 281
EP - 285
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 4-5
ER -