Measurement of γ rays from giant resonances excited by the C 12 (p,p′) reaction at 392 MeV and 0

M. S. Reen, I. Ou, T. Sudo, D. Fukuda, T. Mori, A. Ali, Y. Koshio, Makoto Sakuda, A. Tamii, N. Aoi, M. Yosoi, E. Ideguchi, T. Suzuki, T. Yamamoto, C. Iwamoto, T. Kawabata, S. Adachi, M. Tsumura, M. Murata, T. FurunoH. Akimune, T. Yano, T. Suzuki, Rohit Dhir

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1 Citation (Scopus)


We measured both the differential cross section (σp,p′=d2σ/dωdEx) and the γ-ray emission probability [Rγ(Ex)=σp,p′γ/σp,p′] from the giant resonances excited by C12(p,p′) reaction at 392 MeV and 0, using a magnetic spectrometer and an array of NaI(Tl) counters. The absolute value of Rγ(Ex) was calibrated by using the well-known γ-ray emission probability from C∗12(15.11 MeV, 1+,T=1) and O∗16(6.9 MeV, 2+,T=0) states within 5% uncertainty. We found that Rγ(Ex) starts from zero at Ex=16 MeV, increases to a maximum of 53.3±0.4±3.9% at Ex=27 MeV, and then decreases. We also compared the measured values of Rγ(Ex) with statistical model calculation based on the Hauser-Feshbach formalism in the energy region Ex=16-32 MeV and discussed the features of γ-ray emission probability quantitatively.

Original languageEnglish
JournalPhysical Review C
Issue number2
Publication statusPublished - Aug 16 2019

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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