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Neutron angular distribution in (γ, n) reactions with linearly polarized γ-ray beam generated by laser Compton scattering

Authors :
K. Horikawa
S. Miyamoto
T. Mochizuki
S. Amano
D. Li
K. Imasaki
Y. Izawa
K. Ogata
S. Chiba
T. Hayakawa
Source :
Physics Letters B, Vol 737, Iss C, Pp 109-113 (2014)
Publication Year :
2014
Publisher :
Elsevier, 2014.

Abstract

In 1957, Agodi predicted that the neutron angular distribution in (γ, n) reactions with a 100% linearly polarized γ-ray beam for dipole excitation should be anisotropic and universally described by the simple function of a+b⋅cos⁡(2ϕ) at the polar angle θ=90°, where ϕ is the azimuthal angle. However, this prediction has not been experimentally confirmed in over half a century. We have verified experimentally this angular distribution in the (γ, n) reaction for 197Au, 127I, and natural Cu targets using linearly polarized laser Compton scattering γ-rays. The result suggests that the (γ→, n) reaction is a novel tool to study nuclear physics in the giant dipole resonance region.

Details

Language :
English
ISSN :
03702693 and 18732445
Volume :
737
Issue :
C
Database :
Directory of Open Access Journals
Journal :
Physics Letters B
Publication Type :
Academic Journal
Accession number :
edsdoj.33a8cc0c25c41269224353d664d0dba
Document Type :
article
Full Text :
https://doi.org/10.1016/j.physletb.2014.08.024