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Differential cross section for neutron scattering from Bi209 at 37 MeV and the weak particle-core coupling

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Date
2010-08-03
Authors
Zhou, Zuying
Ruan, Xichao
Du, Yanfeng
Qi, Bujia
Tang, Hongqing
Xia, Haihong
Walter, RL
Braun, RT
Howell, CR
Tornow, W
Weisel, GJ
Dupuis, M
Delaroche, JP
Chen, Zemin
Chen, Zhenpeng
Chen, Yingyang
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(16 total)
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Abstract
Differential scattering cross-section data have been measured at 43 angles from 11° to 160° for 37-MeV neutrons incident on Bi209. The primary motivation for the measurements is to address the scarcity of neutron scattering data above 30 MeV and to improve the accuracy of optical-model predictions at medium neutron energies. The high-statistics measurements were conducted at the China Institute of Atomic Energy using the H3(d,n)He4 reaction as the neutron source, a pulsed deuteron beam, and time-of-flight (TOF) techniques. Within the resolution of the TOF spectrometer, the measurements included inelastic scattering components. The sum of elastic and inelastic scattering cross sections was computed in joint optical-model and distorted-wave Born approximation calculations under the assumption of the weak particle-core coupling. The results challenge predictions from well-established spherical optical potentials. Good agreement between data and calculations is achieved at 37 MeV provided that the balance between surface and volume absorption in a recent successful model is modified, thus suggesting the need for global optical-model improvements at medium neutron energies. © 2010 The American Physical Society.
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Journal article
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https://hdl.handle.net/10161/4266
Published Version (Please cite this version)
10.1103/PhysRevC.82.024601
Publication Info
Zhou, Zuying; Ruan, Xichao; Du, Yanfeng; Qi, Bujia; Tang, Hongqing; Xia, Haihong; ... Chen, Yingyang (2010). Differential cross section for neutron scattering from Bi209 at 37 MeV and the weak particle-core coupling. Physical Review C - Nuclear Physics, 82(2). pp. 24601. 10.1103/PhysRevC.82.024601. Retrieved from https://hdl.handle.net/10161/4266.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
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Scholars@Duke

Howell

Calvin R. Howell

Professor of Physics
Professor Howell’s research is in the area of experimental nuclear physics with emphasis on the quantum chromodynamics (QCD) description of low-energy nuclear phenomena, including structure properties of nucleons and nuclei and reaction dynamics in few-nucleon systems.   The macroscopic properties of nucleon structure and the residual strong nuclear force between neutrons and protons in nuclei emerge from QCD at distances where the color interactions between quarks a
Tornow

Werner Tornow

Professor Emeritus of Physics
Professor Werner Tornow became the Director of TUNL in July, 1996. He is primarily interested in studying few-nucleon systems with special emphasis on two-nucleon systems and three-nucleon force effects in three-nucleon systems. Polarized beams and polarized targets are essential in this work. He collaborates with the leading theoreticians in his field to interpret the experimental data obtained at TUNL. He recently became involved in weak-interaction physics, especially in double-beta decay s
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