Separation of pygmy dipole and M1 resonances in Zr90 by a High-resolution inelastic proton scattering near 0°

C. Iwamoto; H. Utsunomiya; A. Tamii; H. Akimune; H. Nakada; T. Shima; T. Yamagata; T. Kawabata; Y. Fujita; H. Matsubara; Y. Shimbara; M. Nagashima; T. Suzuki; H. Fujita; M. Sakuda; T. Mori; T. Izumi; A. Okamoto; T. Kondo; B. Bilgier; H. C. Kozer; Y. W. Lui; K. Hatanaka

doi:10.1103/PhysRevLett.108.262501

Separation of pygmy dipole and M1 resonances in Zr90 by a High-resolution inelastic proton scattering near 0°

C. Iwamoto, H. Utsunomiya, A. Tamii, H. Akimune, H. Nakada, T. Shima, T. Yamagata, T. Kawabata, Y. Fujita, H. Matsubara, Y. Shimbara, M. Nagashima, T. Suzuki, H. Fujita, M. Sakuda, T. Mori, T. Izumi, A. Okamoto, T. Kondo, B. BilgierH. C. Kozer, Y. W. Lui, K. Hatanaka

研究成果 › 査読

46 被引用数 (Scopus)

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A high-resolution measurement of inelastic proton scattering off Zr90 near 0° was performed at 295 MeV with a focus on a pronounced strength previously reported in the low-energy tail of giant dipole resonance. A forest of fine structure was observed in the excitation energy region 7-12 MeV. A multipole decomposition analysis of the angular distribution for the forest was carried out using the ECIS95 distorted-wave Born approximation code with the Hartree-Fock plus random-phase approximation model of E1 and M1 transition densities and inclusion of E1 Coulomb excitation. The analysis separated pygmy dipole and M1 resonances in the forest at E _PDR=9.15±0.18MeV with Γ _PDR=2.91±0.64MeV and at E _M1=9. 53±0.06MeV with Γ _M1=2.70±0.17MeV in the Lorentzian function, respectively. The B(E1) value for pygmy dipole resonance over 7-11 MeV is 0.75±0.08e2fm2, which corresponds to 2.1±0.2% of the Thomas-Reiche-Kuhn sum rule.

本文言語	English
論文番号	262501
ジャーナル	Physical Review Letters
巻	108
号	26
DOI	https://doi.org/10.1103/PhysRevLett.108.262501
出版ステータス	Published - 6月 27 2012
外部発表	はい

ASJC Scopus subject areas

物理学および天文学（全般）

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10.1103/PhysRevLett.108.262501

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Iwamoto, C., Utsunomiya, H., Tamii, A., Akimune, H., Nakada, H., Shima, T., Yamagata, T., Kawabata, T., Fujita, Y., Matsubara, H., Shimbara, Y., Nagashima, M., Suzuki, T., Fujita, H., Sakuda, M., Mori, T., Izumi, T., Okamoto, A., Kondo, T., ... Hatanaka, K. (2012). Separation of pygmy dipole and M1 resonances in Zr90 by a High-resolution inelastic proton scattering near 0°. Physical Review Letters, 108(26), [262501]. https://doi.org/10.1103/PhysRevLett.108.262501

Iwamoto, C, Utsunomiya, H, Tamii, A, Akimune, H, Nakada, H, Shima, T, Yamagata, T, Kawabata, T, Fujita, Y, Matsubara, H, Shimbara, Y, Nagashima, M, Suzuki, T, Fujita, H, Sakuda, M, Mori, T, Izumi, T, Okamoto, A, Kondo, T, Bilgier, B, Kozer, HC, Lui, YW & Hatanaka, K 2012, 'Separation of pygmy dipole and M1 resonances in Zr90 by a High-resolution inelastic proton scattering near 0°', Physical Review Letters, vol. 108, no. 26, 262501. https://doi.org/10.1103/PhysRevLett.108.262501

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title = "Separation of pygmy dipole and M1 resonances in Zr90 by a High-resolution inelastic proton scattering near 0°",

abstract = "A high-resolution measurement of inelastic proton scattering off Zr90 near 0° was performed at 295 MeV with a focus on a pronounced strength previously reported in the low-energy tail of giant dipole resonance. A forest of fine structure was observed in the excitation energy region 7-12 MeV. A multipole decomposition analysis of the angular distribution for the forest was carried out using the ECIS95 distorted-wave Born approximation code with the Hartree-Fock plus random-phase approximation model of E1 and M1 transition densities and inclusion of E1 Coulomb excitation. The analysis separated pygmy dipole and M1 resonances in the forest at E PDR=9.15±0.18MeV with Γ PDR=2.91±0.64MeV and at E M1=9. 53±0.06MeV with Γ M1=2.70±0.17MeV in the Lorentzian function, respectively. The B(E1) value for pygmy dipole resonance over 7-11 MeV is 0.75±0.08e2fm2, which corresponds to 2.1±0.2% of the Thomas-Reiche-Kuhn sum rule.",

author = "C. Iwamoto and H. Utsunomiya and A. Tamii and H. Akimune and H. Nakada and T. Shima and T. Yamagata and T. Kawabata and Y. Fujita and H. Matsubara and Y. Shimbara and M. Nagashima and T. Suzuki and H. Fujita and M. Sakuda and T. Mori and T. Izumi and A. Okamoto and T. Kondo and B. Bilgier and Kozer, {H. C.} and Lui, {Y. W.} and K. Hatanaka",

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doi = "10.1103/PhysRevLett.108.262501",

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T1 - Separation of pygmy dipole and M1 resonances in Zr90 by a High-resolution inelastic proton scattering near 0°

AU - Iwamoto, C.

AU - Utsunomiya, H.

AU - Tamii, A.

AU - Akimune, H.

AU - Nakada, H.

AU - Shima, T.

AU - Yamagata, T.

AU - Kawabata, T.

AU - Fujita, Y.

AU - Matsubara, H.

AU - Shimbara, Y.

AU - Nagashima, M.

AU - Suzuki, T.

AU - Fujita, H.

AU - Sakuda, M.

AU - Mori, T.

AU - Izumi, T.

AU - Okamoto, A.

AU - Kondo, T.

AU - Bilgier, B.

AU - Kozer, H. C.

AU - Lui, Y. W.

AU - Hatanaka, K.

PY - 2012/6/27

Y1 - 2012/6/27

N2 - A high-resolution measurement of inelastic proton scattering off Zr90 near 0° was performed at 295 MeV with a focus on a pronounced strength previously reported in the low-energy tail of giant dipole resonance. A forest of fine structure was observed in the excitation energy region 7-12 MeV. A multipole decomposition analysis of the angular distribution for the forest was carried out using the ECIS95 distorted-wave Born approximation code with the Hartree-Fock plus random-phase approximation model of E1 and M1 transition densities and inclusion of E1 Coulomb excitation. The analysis separated pygmy dipole and M1 resonances in the forest at E PDR=9.15±0.18MeV with Γ PDR=2.91±0.64MeV and at E M1=9. 53±0.06MeV with Γ M1=2.70±0.17MeV in the Lorentzian function, respectively. The B(E1) value for pygmy dipole resonance over 7-11 MeV is 0.75±0.08e2fm2, which corresponds to 2.1±0.2% of the Thomas-Reiche-Kuhn sum rule.

AB - A high-resolution measurement of inelastic proton scattering off Zr90 near 0° was performed at 295 MeV with a focus on a pronounced strength previously reported in the low-energy tail of giant dipole resonance. A forest of fine structure was observed in the excitation energy region 7-12 MeV. A multipole decomposition analysis of the angular distribution for the forest was carried out using the ECIS95 distorted-wave Born approximation code with the Hartree-Fock plus random-phase approximation model of E1 and M1 transition densities and inclusion of E1 Coulomb excitation. The analysis separated pygmy dipole and M1 resonances in the forest at E PDR=9.15±0.18MeV with Γ PDR=2.91±0.64MeV and at E M1=9. 53±0.06MeV with Γ M1=2.70±0.17MeV in the Lorentzian function, respectively. The B(E1) value for pygmy dipole resonance over 7-11 MeV is 0.75±0.08e2fm2, which corresponds to 2.1±0.2% of the Thomas-Reiche-Kuhn sum rule.

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Separation of pygmy dipole and M1 resonances in Zr90 by a High-resolution inelastic proton scattering near 0°

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