Isovector quadrupole resonance in 13C(γ, n) reaction

Kazushige Maeda; Ito Sachiko; Hideaki Itoh; Osamu Konno; Hideto Matsuyama; Tetsuya Murakami; Takaoki Sasaki; Toshimi Suda; Motonobu Takeya; Tatuo Terasawa

doi:10.1143/JPSJ.75.034201

Isovector quadrupole resonance in ¹³C(γ, n) reaction

Kazushige Maeda, Ito Sachiko, Hideaki Itoh, Osamu Konno, Hideto Matsuyama, Tetsuya Murakami, Takaoki Sasaki, Toshimi Suda, Motonobu Takeya, Tatuo Terasawa

Research Center for Electron Photon Science (ELPH)

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The photoneutron cross section for ¹³C was measured in the tagged photon energy range E_γ = 17-70 MeV. Substantial forward to backward asymmetry was observed above the giant dipole resonance region. The observed asymmetries were analyzed by the direct and semi-direct model, assuming two isovector E2 resonances, which locate at E_x = 30:9 ± 1:5 MeV with Γ = 8 ± 6 MeV and E_x = 43:2 ± 1:8 MeV with Γ = 13 ± 6 MeV. They are identified as the T_< and T_> isospin components of the isovector quadrupole strengths, which exhaust most of the sum rule.

Original language	English
Article number	034201
Journal	Journal of the Physical Society of Japan
Volume	75
Issue number	3
DOIs	https://doi.org/10.1143/JPSJ.75.034201
Publication status	Published - 2006 Mar

Keywords

Giant resonance
Isovector
Photonuclear reaction
Tagged photon

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10.1143/JPSJ.75.034201

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title = "Isovector quadrupole resonance in 13C(γ, n) reaction",

abstract = "The photoneutron cross section for 13C was measured in the tagged photon energy range Eγ = 17-70 MeV. Substantial forward to backward asymmetry was observed above the giant dipole resonance region. The observed asymmetries were analyzed by the direct and semi-direct model, assuming two isovector E2 resonances, which locate at Ex = 30:9 ± 1:5 MeV with Γ = 8 ± 6 MeV and Ex = 43:2 ± 1:8 MeV with Γ = 13 ± 6 MeV. They are identified as the T< and T> isospin components of the isovector quadrupole strengths, which exhaust most of the sum rule.",

keywords = "Giant resonance, Isovector, Photonuclear reaction, Tagged photon",

author = "Kazushige Maeda and Ito Sachiko and Hideaki Itoh and Osamu Konno and Hideto Matsuyama and Tetsuya Murakami and Takaoki Sasaki and Toshimi Suda and Motonobu Takeya and Tatuo Terasawa",

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month = mar,

doi = "10.1143/JPSJ.75.034201",

language = "English",

volume = "75",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "The Physical Society of Japan",

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TY - JOUR

T1 - Isovector quadrupole resonance in 13C(γ, n) reaction

AU - Maeda, Kazushige

AU - Sachiko, Ito

AU - Itoh, Hideaki

AU - Konno, Osamu

AU - Matsuyama, Hideto

AU - Murakami, Tetsuya

AU - Sasaki, Takaoki

AU - Suda, Toshimi

AU - Takeya, Motonobu

AU - Terasawa, Tatuo

PY - 2006/3

Y1 - 2006/3

N2 - The photoneutron cross section for 13C was measured in the tagged photon energy range Eγ = 17-70 MeV. Substantial forward to backward asymmetry was observed above the giant dipole resonance region. The observed asymmetries were analyzed by the direct and semi-direct model, assuming two isovector E2 resonances, which locate at Ex = 30:9 ± 1:5 MeV with Γ = 8 ± 6 MeV and Ex = 43:2 ± 1:8 MeV with Γ = 13 ± 6 MeV. They are identified as the T< and T> isospin components of the isovector quadrupole strengths, which exhaust most of the sum rule.

AB - The photoneutron cross section for 13C was measured in the tagged photon energy range Eγ = 17-70 MeV. Substantial forward to backward asymmetry was observed above the giant dipole resonance region. The observed asymmetries were analyzed by the direct and semi-direct model, assuming two isovector E2 resonances, which locate at Ex = 30:9 ± 1:5 MeV with Γ = 8 ± 6 MeV and Ex = 43:2 ± 1:8 MeV with Γ = 13 ± 6 MeV. They are identified as the T< and T> isospin components of the isovector quadrupole strengths, which exhaust most of the sum rule.

KW - Giant resonance

KW - Isovector

KW - Photonuclear reaction

KW - Tagged photon

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DO - 10.1143/JPSJ.75.034201

M3 - Article

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SN - 0031-9015

VL - 75

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 3

M1 - 034201

ER -

Isovector quadrupole resonance in ¹³C(γ, n) reaction

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