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arXiv · 1803.11327

Azimuthal angle distributions of neutrons emitted from the $^9$Be($γ$,$n$) reaction with linearly polarized $γ$-rays

Yuma Kikuchi·Kazuyuki Ogata·Takehito Hayakawa·Satoshi Chiba
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Abstract

The electromagnetic transitions of $^9$Be with linearly polarized $γ$-rays are calculated by using the $α$~+~$α$~+~$n$ three-body model and the complex-scaled solutions of the Lippmann-Schwinger equation; the azimuthal angle distributions of the emitted neutrons are investigated. We calculate the anisotropy parameter as a function of the photon incident energy $E_γ$, and discuss how sensitive the anisotropy parameter is to nuclear structure and transition modes. The result suggests that the azimuthal angle distribution of neutrons emitted from the $^9$Be($γ$,$n$) reaction with the linearly polarized $γ$-rays is useful to identify the resonances in the final states even if it is not clearly observed in the cross section.

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Yuma Kikuchi, Kazuyuki Ogata, Takehito Hayakawa, Satoshi Chiba. 2018-03-30. Azimuthal angle distributions of neutrons emitted from the $^9$Be($γ$,$n$) reaction with linearly polarized $γ$-rays. https://doi.org/10.1103/physrevc.98.064611

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