Differential cross section for neutron scattering from Bi209 at 37 MeV and the weak particle-core coupling
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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https://hdl.handle.net/10161/4266Published Version (Please cite this version)
10.1103/PhysRevC.82.024601Publication 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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Show full item recordScholars@Duke
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
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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