scholarly journals Present Status and Activities of High Energy Nuclear Data Evaluation. For Future Radiation Utilization Facilities.

1998 ◽  
Vol 40 (1) ◽  
pp. 3-28
Author(s):  
Tokio FUKAHORI ◽  
Takehiko MUKAIYAMA ◽  
Hiroshi MAEKAWA ◽  
Yukio OYAMA ◽  
Satoshi CHIBA ◽  
...  
Keyword(s):  
Present Status ◽  
Nuclear Data ◽  
High Energy ◽  
Data Evaluation

THE ABSORPTION OF HIGH-ENERGY RADIATION, A MONTE CARLO STUDY: II. SPHERICAL GEOMETRY

1963 ◽  
Vol 41 (4) ◽  
pp. 651-663
Author(s):  
N. R. Steenberg
Keyword(s):  
Cross Section ◽  
Spherical Geometry ◽  
Monte Carlo Study ◽  
Nuclear Data ◽  
High Energy ◽  
Rare Gas ◽  
Nuclear Radius ◽  
Rigid Spheres ◽  
High Energy Radiation ◽  
The Individual

The absorption of radiation in a spherical obstacle composed of rigid spheres has been studied. The result is the absorption cross section of such an obstacle as a function of the free cross section and the number A of the individual spheres and of packing density. It is found that the usual rare-gas formula represents the cross section adequately. The analysis is applied to nuclear data for the absorption of 25-Bev/c protons by nuclei. It is found that for a nuclear radius R = r0A1/3 + δ, where δ is the radius of the nucleon, r0 = 1.17 fermi, δ = 1.05 fermi, and an average nucleon transparency a2 = 0.30 is consistent with the data.

scholarly journals SELECTED TOPICS IN HIGH ENERGY SEMI-EXCLUSIVE ELECTRO-NUCLEAR REACTIONS

2001 ◽  
Vol 10 (06) ◽  
pp. 405-457 ◽  
Author(s):  
MISAK M. SARGSIAN
Keyword(s):  
Present Status ◽  
Short Range ◽  
Nuclear Reactions ◽  
Eikonal Approximation ◽  
High Energy ◽  
Glauber Theory ◽  
Nucleon Recoil ◽  
High Energy Scattering ◽  
Nuclear Targets ◽  
Short Range Correlations

We review the present status of the theory of high energy reactions with semi-exclusive nucleon electro-production from nuclear targets. We demonstrate how the increase of transferred energies in these reactions opens a completely new window for study of the microscopic nuclear structure at small distances. The simplifications in theoretical descriptions associated with the increase in the energies are discussed. The theoretical framework for calculation of high energy nuclear reactions based on the effective Feynman diagram rules is described in detail. The result of this approach is the generalized eikonal approximation (GEA), which is reduced to the Glauber approximation when nucleon recoil is neglected. The method of GEA is demonstrated in the calculation of high energy electro-disintegration of the deuteron and A=3 targets. Subsequently, we generalize the obtained formulae for A>3 nuclei. The relation of GEA to the Glauber theory is analyzed. Then, based on the GEA framework we discuss some of the phenomena which can be studied in exclusive reactions: nuclear transparency and short-range correlations in nuclei. We illustrate how light-cone dynamics of high-energy scattering emerge naturally in high energy electro-nuclear reactions.

scholarly journals NEAR FUTURE PROSPECTS OF QCD SPIN STUDIES

1994 ◽  
Vol 09 (15) ◽  
pp. 2505-2544 ◽  
Author(s):  
P.M. NADOLSKY ◽  
S.M. TROSHIN ◽  
N.E. TYURIN
Keyword(s):  
Present Status ◽  
High Energy ◽  
Future Prospects ◽  
Wide Range ◽  
Spin Measurements ◽  
Near Future

We consider the physics motivations and prospects for the study of spin phenomena at future high energy accelerators. The possibilities of using the already operating machines are also discussed. It is emphasized that the present status of QCD spin studies requires a wide range of spin measurements.

TANDEM: a mutual cooperation effort for transactinide nuclear data evaluation and measurement

2015 ◽  
Vol 304 (3) ◽  
pp. 1359-1363 ◽  
Author(s):  
M. Rossbach ◽  
C. Genreith ◽  
T. Randriamalala ◽  
E. Mauerhofer ◽  
Zs. Revay ◽  
...  
Keyword(s):  
Nuclear Data ◽  
Data Evaluation ◽  
Mutual Cooperation

scholarly journals New paradigm for nuclear data evaluation

2020 ◽  
Vol 239 ◽  
pp. 11001
Author(s):  
M. Herman ◽  
D.A. Brown ◽  
M.B. Chadwick ◽  
W. Haeck ◽  
T. Kawano ◽  
...  
Keyword(s):  
Nuclear Reaction ◽  
Error Compensation ◽  
Nuclear Data ◽  
Covariance Matrices ◽  
Data Evaluation ◽  
New Paradigm ◽  
New Approach ◽  
Reaction Data ◽  
Cross Correlations

A new paradigm for nuclear reaction data evaluations is proposed to produce adjusted libraries that take into account integral experiments on the same footing as the differential ones. These evaluations will provide comprehensive covariance matrices including cross-correlations among different materials/reactions that are critical for realistic propagation of data uncertainties to integral quantities. The new approach should also reduce error compensation issues and facilitate updating of the library to account for new or corrected experiments and advances in reaction modeling.

Application of Machine Learning to Nuclear Data Evaluation

2020 ◽  
Author(s):  
L. Bernstein ◽  
M. Fratoni ◽  
P. Vicente-Valdez
Keyword(s):  
Machine Learning ◽  
Nuclear Data ◽  
Data Evaluation
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