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, Yusuke 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, R. Dhir

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Abstract

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
Volume100
Issue number2
DOIs
Publication statusPublished - Aug 16 2019

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rays
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spectrometers
formalism
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  • Nuclear and High Energy Physics

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Measurement of γ rays from giant resonances excited by the C 12 (p,p′) reaction at 392 MeV and 0. / Reen, M. S.; Ou, I.; Sudo, T.; Fukuda, D.; Mori, T.; Ali, A.; Koshio, Yusuke; Sakuda, Makoto; Tamii, A.; Aoi, N.; Yosoi, M.; Ideguchi, E.; Suzuki, T.; Yamamoto, T.; Iwamoto, C.; Kawabata, T.; Adachi, S.; Tsumura, M.; Murata, M.; Furuno, T.; Akimune, H.; Yano, T.; Suzuki, T.; Dhir, R.

In: Physical Review C, Vol. 100, No. 2, 16.08.2019.

Research output: Contribution to journalArticle

Reen, MS, Ou, I, Sudo, T, Fukuda, D, Mori, T, Ali, A, Koshio, Y, Sakuda, M, Tamii, A, Aoi, N, Yosoi, M, Ideguchi, E, Suzuki, T, Yamamoto, T, Iwamoto, C, Kawabata, T, Adachi, S, Tsumura, M, Murata, M, Furuno, T, Akimune, H, Yano, T, Suzuki, T & Dhir, R 2019, 'Measurement of γ rays from giant resonances excited by the C 12 (p,p′) reaction at 392 MeV and 0', Physical Review C, vol. 100, no. 2. https://doi.org/10.1103/PhysRevC.100.024615
Reen, M. S. ; Ou, I. ; Sudo, T. ; Fukuda, D. ; Mori, T. ; Ali, A. ; Koshio, Yusuke ; Sakuda, Makoto ; Tamii, A. ; Aoi, N. ; Yosoi, M. ; Ideguchi, E. ; Suzuki, T. ; Yamamoto, T. ; Iwamoto, C. ; Kawabata, T. ; Adachi, S. ; Tsumura, M. ; Murata, M. ; Furuno, T. ; Akimune, H. ; Yano, T. ; Suzuki, T. ; Dhir, R. / Measurement of γ rays from giant resonances excited by the C 12 (p,p′) reaction at 392 MeV and 0. In: Physical Review C. 2019 ; Vol. 100, No. 2.
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abstract = "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.",
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AU - Reen, M. S.

AU - Ou, I.

AU - Sudo, T.

AU - Fukuda, D.

AU - Mori, T.

AU - Ali, A.

AU - Koshio, Yusuke

AU - Sakuda, Makoto

AU - Tamii, A.

AU - Aoi, N.

AU - Yosoi, M.

AU - Ideguchi, E.

AU - Suzuki, T.

AU - Yamamoto, T.

AU - Iwamoto, C.

AU - Kawabata, T.

AU - Adachi, S.

AU - Tsumura, M.

AU - Murata, M.

AU - Furuno, T.

AU - Akimune, H.

AU - Yano, T.

AU - Suzuki, T.

AU - Dhir, R.

PY - 2019/8/16

Y1 - 2019/8/16

N2 - 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.

AB - 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.

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