scholarly journals On-the-fly Doppler broadening of unresolved resonance region cross sections

2017 ◽  
Vol 101 ◽  
pp. 444-460 ◽  
Author(s):  
Jonathan A. Walsh ◽  
Benoit Forget ◽  
Kord S. Smith ◽  
Forrest B. Brown
Keyword(s):  
Cross Sections ◽  
Resonance Region ◽  
Doppler Broadening

scholarly journals RESTRICTED LOCALITY OF QUARK-HADRON DUALITY IN EXCLUSIVE MESON PHOTOPRODUCTION REACTIONS ABOVE THE RESONANCE REGION

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1910-1913 ◽  
Author(s):  
QIANG ZHAO ◽  
FRANK E. CLOSE
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Scaling Laws ◽  
Resonance Region ◽  
Meson Photoproduction ◽  
Counting Rule ◽  
Dimensional Scaling ◽  
Exclusive Processes ◽  
Photoproduction Reactions ◽  
Hadron Duality

We show how deviations from the dimensional scaling laws for exclusive processes may be related to a breakdown in the locality of quark-hadron duality, i.e. the "restricted locality". For exclusive reactions like meson photo- and electroproduction above the resonance region, we explore the effects arising from such a local duality breaking and propose that it can be a possible source for oscillations about the smooth quark counting rule predicted by pQCD in the 90-degree differential cross sections.

scholarly journals Evaluation of neutron induced reaction cross sections in the resolved and unresolved resonance region at EC – JRC – IRMM

2013 ◽  
Vol 42 ◽  
pp. 02001
Author(s):  
S. Kopecky ◽  
F. Emiliani ◽  
K. Kauwenberghs ◽  
C. Lampoudis ◽  
C. Massimi ◽  
...  
Keyword(s):  
Cross Sections ◽  
Resonance Region ◽  
Reaction Cross ◽  
Reaction Cross Sections ◽  
Induced Reaction

Measurement of differential cross sections for radiative pion-proton capture in the second resonance region

1975 ◽  
Vol 101 (1) ◽  
pp. 1-18 ◽  
Author(s):  
A.J. Weiss ◽  
D.J. Blasberg ◽  
J.C. Comiso ◽  
R.P. Haddock ◽  
B.M.K. Nefkens ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Resonance Region ◽  
Differential Cross Sections ◽  
Proton Capture

A New Resonance Region Evaluation of Neutron Cross Sections for235U

1989 ◽  
Vol 103 (2) ◽  
pp. 109-118 ◽  
Author(s):  
G. de Saussure ◽  
L. C. Leal ◽  
R. B. Perez ◽  
N. M. Larson ◽  
M. S. Moore
Keyword(s):  
Cross Sections ◽  
Resonance Region ◽  
Neutron Cross Sections

Neutron Up-Scattering Effect in Refined Energy Group Structure

2016 ◽  
Author(s):  
Qingming He ◽  
Hongchun Wu ◽  
Yunzhao Li ◽  
Liangzhi Cao ◽  
Tiejun Zu
Keyword(s):  
Cross Sections ◽  
Group Structure ◽  
Scattering Matrix ◽  
The Self ◽  
Shielding Effect ◽  
Doppler Broadening ◽  
Fuel Temperature ◽  
Energy Group ◽  
Scattering Effect ◽  
Mc Method

Aiming at generating a 361-group library, this paper investigated neutron up-scattering effect in the 361-group Santamarina-Hfaiedh Energy Mesh (SHEM). Firstly, the Doppler Broadening Rejection Correction (DBRC) method is implemented to consider the neutron up-scattering effect in Monte Carlo (MC) method. Then the MC method is employed to prepare resonance integral table and scattering matrix for afterward calculation. Numerical results show that the neutron up-scattering affects kinf by ∼200 pcm at most for UO2 pin cell problems in the 361-group SHEM, while the fuel temperature coefficient (FTC) is also influenced by 12∼13%. It has also been found that both of the above two influences acts through scattering matrix rather than self-shielded absorption cross sections. In addition, the self-shielding effect of cladding is studied and it’s been found that it affects kinf by 30∼70 pcm.

On-the-fly treatment of temperature dependent cross sections in the unresolved resonance region in RMC code

2018 ◽  
Vol 111 ◽  
pp. 234-241 ◽  
Author(s):  
Shichang Liu ◽  
Yuan Yuan ◽  
Jiankai Yu ◽  
Ding She ◽  
Kan Wang
Keyword(s):  
Cross Sections ◽  
Resonance Region ◽  
Temperature Dependent
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