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RISS 인기검색어
- 검색키워드
- 저자 : A. Yu. Konobeyev (검색결과 5 건)
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High Energy Activation Data Library (HEAD-2009)
Yu. A. Korovin,A. A. Natalenko,A. Yu. Konobeyev,A. Yu. Stankovskiy,S. G. Mashinik 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
A proton activation data library for 682 nuclides from ^1H to ^(210)Po in the energy range from 150 MeV up to 1 GeV was developed. To calculate proton activation data, the MCNPX 2.6.0 and CASCADE/INPE codes were chosen. Different intranuclear cascade, preequilibrium, and equilibrium nuclear reaction models and their combinations were used. The optimum calculation models have been chosen on the basis of statistical correlations for calculated and experimental proton data taken from the EXFOR library of experimental nuclear data. All the data are written in ENDF-6 format. The library is called HEPAD-2008 (High Energy Proton Activation Data). A revision of IEAF-2005 neutron activation data library has been performed. A set of nuclides for which the cross-section data can be (and were) updated using more modern and improved models is specified, and the corresponding calculations have been made in the present work. The new version of the library is called IEAF-2009. The HEPAD-2008 and IEAF-2009 are merged to the final HEAD-2009 library.
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A. Yu. Konobeyev,U. Fischer,A. J. Koning,H. Leeb,S. Leray,Y. Yariv 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Intranuclear cascade models implemented in MCNPX, Bertini, ISABEL, CEM, andINCL4 combined with pre- equilibrium models, and evaporation models Dresnerand ABLA are used for the simulation of particle interactions with matter incases where evaluated data are not available. Calculated cross-sections,however, are now available with the TENDL data, a complete collection ofnuclear data libraries in MCNPX format, for all materials, up to 200 MeV. Inthe present work cross-sections of proton induced reactions (p,x) calculatedusing the nuclear models, and TENDL, implemented in MCNPX are compared withexperimental data. Several thousands measured cross-sections for targetnuclei with the atomic number from 12 to 83 at incident proton energies from0 to 150 MeV are taken into account for the comparison. Various statisticalcriteria are applied for the quantification of the difference betweencalculated cross-sections and experimental data. The results obtainedindicate which MCNPX models are best to be used for applications below 150 MeV. Furthermore, they show what degree of accuracy one can expect from theuse of MCNPX models instead of evaluated data.
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Computational Approach for Evaluation of Nuclear Data IincludingCovariance Information
A. Yu. Konobeyev,U. Fischer,P. E. Pereslavtsev 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
A computational approach was developed for the evaluation of nuclearcross-section data taking into account experimental data and results ofnuclear model calculations. A set of computer programs, called BEKED, wasdeveloped to perform the processing of experimental data, provide the runsfor the cross-section and covariance data calculations, and perform theglobal evaluation of nuclear data. The calculation of covariances arecarried out using different approaches including the generalizedleast-squares method and the Monte Carlo method developed by D.Smith, whichtakes into account both experimental and nuclear model uncertainties.Presently, the BEKED approach integrates the nuclear model codes TALYS andALICE/AS, as well as other codes employing e.g. the intranuclear cascadeevaporation model.
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Implementation of the Geometry Dependent Hybrid Model in TALYS
A. Yu. Konobeyev,U. Fischer,P. E. Pereslavtsev,A. J. Koning,M. Blann 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The geometry dependent hybrid model (GDH) developed by M.Blann and suppliedby the models for the non-equilibrium cluster emission was implemented inthe TALYS code. A number of subroutines from the ALICE and ALICE/ASH codeswere introduced in TALYS after appropriate modifications. Commoncomputations as those relating to binding energies, the optical model andothers are performed by means of TALYS. The value of the TALYS inputvariable ``preeqmode'' equal to 5 is reserved for the use of the GDHapproach for the calculation of the pre-compound energy distributions ofnucleon and light clusters. A comparison with calculations using theoriginal ALICE and ALICE/ASH codes, on one hand, and experimental data, onthe other hand, is given. The advantages of the implementation of the GDHmodel in the TALYS code are discussed.
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A. Yu. Konobeyev,U. Fischer,S.P. Simakov 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.1
Displacement cross-sections for an advanced assessment of radiation damage rates were obtained for anumber of materials using the arc-dpa model at neutron incident energies from 10-5 eV to 10 GeV. Evaluated data files, CEM03 and ECIS codes, and an approximate approach were applied for the calculationof recoil energy distributions in neutron induced reactions. Three sets of displacement cross-sections based on the use of low-energy data from JEFF-3.3, ENDF/BVIII. 0, and JENDL-4.0u were prepared. Files contain also cross-sections calculated using the standard NRTmodel. Special efforts were made to estimate the uncertainty of obtained displacement cross-sections
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