Excitation and $ \gamma$γ-decay coincidence measurements at the GRAF beamline for studies of pygmy and giant dipole resonances
Excitation and $ \gamma$γ-decay coincidence measurements at the GRAF beamline for studies of pygmy and giant dipole resonances
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DOI：
10.1140/epja/i2019-12854-7
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发表时间：
2019-12
期刊：
影响因子：
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通讯作者：
N. Kobayashi;K. Miki;T. Hashimoto;C. Iwamoto;A. Tamii;N. Aoi;M. Carpenter;K. Hatanaka;J. Isaak;E. Ideguchi;S. Morinobu;S. Nakamura;S. Noji
中科院分区：
文献类型：
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作者：
N. Kobayashi;K. Miki;T. Hashimoto;C. Iwamoto;A. Tamii;N. Aoi;M. Carpenter;K. Hatanaka;J. Isaak;E. Ideguchi;S. Morinobu;S. Nakamura;S. Noji
Physical studies of electric dipole excitations in atomic nucleie.g.the structure of pygmy dipole resonances and isovector giant dipole resonances are attracting much attention recently. In this article, we describe a technical development in the coincidence measurement of the excitation processes with the Grand Raiden high-resolution magnetic spectrometer and the-decay processes by the CAGRA and SCLLA efficient-detector arrays at the Research Center for Nuclear Physics at Osaka University. Specifically, we describe how we developed a new beamline (GRAF), fordetection at the target position by placing the spectrometer at an angle ofand by transporting the primary beam to a well-shielded beam dump. Experimental conditions and representative data are shown for each of the two-detector arrays.
