The Experts below are selected from a list of 870 Experts worldwide ranked by ideXlab platform
V Becares - One of the best experts on this subject based on the ideXlab platform.
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measurement of the neutron capture cross section of the Fissile Isotope 235u with the cern n_tof total absorption calorimeter and a fission tagging based on micromegas detectors
Nuclear Data Sheets, 2014Co-Authors: J Balibrea, E Mendoza, D Canoott, C Guerrero, E Berthoumieux, S Altstadt, J Andrzejewski, L Audouin, M Barbagallo, V BecaresAbstract:Abstract Current and future nuclear technologies require more accurate nuclear data on (n, γ ) cross sections and the α -ratios of Fissile Isotopes. Their measurement presents several difficulties, mainly related to the strong fission γ -ray background competing with the weaker γ -ray cascades used as the experimental signature of the (n, γ ) process. A specific setup was used at the CERN n_TOF facility in 2012 for the measurement of the (n, γ ) cross section and α -ratios of Fissile Isotopes and used for the case of the 235 U Isotope. The setup consists of a set of micromegas fission detectors surrounding the 235 U samples all placed inside a segmented BaF2 Total Absorption Calorimeter.
J Balibrea - One of the best experts on this subject based on the ideXlab platform.
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measurement of the neutron capture cross section of the Fissile Isotope 235u with the cern n_tof total absorption calorimeter and a fission tagging based on micromegas detectors
Nuclear Data Sheets, 2014Co-Authors: J Balibrea, E Mendoza, D Canoott, C Guerrero, E Berthoumieux, S Altstadt, J Andrzejewski, L Audouin, M Barbagallo, V BecaresAbstract:Abstract Current and future nuclear technologies require more accurate nuclear data on (n, γ ) cross sections and the α -ratios of Fissile Isotopes. Their measurement presents several difficulties, mainly related to the strong fission γ -ray background competing with the weaker γ -ray cascades used as the experimental signature of the (n, γ ) process. A specific setup was used at the CERN n_TOF facility in 2012 for the measurement of the (n, γ ) cross section and α -ratios of Fissile Isotopes and used for the case of the 235 U Isotope. The setup consists of a set of micromegas fission detectors surrounding the 235 U samples all placed inside a segmented BaF2 Total Absorption Calorimeter.
Haci Mehmet şahin - One of the best experts on this subject based on the ideXlab platform.
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investigation of a gas turbine modular helium reactor using reactor grade plutonium with 232th and 238u
Progress in Nuclear Energy, 2016Co-Authors: Sumer şahin, Ozgur Erol, Haci Mehmet şahinAbstract:Abstract Utilization of natural uranium (nat-U) and thorium as fertile fuels has been investigated by in a Gas Turbine – Modular Helium Reactor (GTMHR) using reactor grade plutonium as driver fuel. A neutronic analysis for the full core reactor was performed by using MCNP5 with ENDF/B-VI cross-section library. Different mixture ratios were tested in order to find the appropriate mixture ratio of fertile and Fissile fuel particles that gives a comparable k eff value of the reference uranium fuel. Time dependent calculations were performed by using MONTEBURN2.0 with ORIGEN2.2 for each selected mixture. Different parameters (operation time, burnup value, Fissile Isotope change, etc.) were subject of performance comparison. The operation time and burnup values were close to each other with nat-U and thorium, namely 3205 days and 176 GWd/MTU for the former and 3175 days 181 GWd/MTU for the latter fertile fuel. In addition, the Fissile Isotope amount changed from initially 6940.1 kg–4579.2 kg at the end of its operation time for nat-U. These values were obtained for thorium as 6603.3 kg–4250.2 kg, respectively.
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weapons grade plutonium utilization with fertile materials in a gas turbine modular helium reactor
Annals of Nuclear Energy, 2015Co-Authors: Ozgur Erol, Haci Mehmet şahinAbstract:Abstract In this study, neutronic performances of the fertile thorium and natural uranium were studied in a Gas Turbine-Modular Helium Reactor using Weapons Grade Plutonium as Fissile fuel. In the first step of the calculation procedure, a series of neutronic calculations were made in order to find the proper mixture ratios for these fertile fuel mixtures by using MCNP5 with ENDF/B-VI cross-section library. After the determination of these mixture ratios, in order to compare these fuel mixtures, time dependent neutronic calculations were made by using Monteburns 2.0 with MCNP5 and Origen 2.2. According to the results obtained, different parameters (operation time, burnup value, Fissile Isotope production, etc.) were compared. Results of the first step showed that, in order to reach the reference k eff value, 690.6 kg more Fissile Isotope was used in natural uranium mixture than the thorium mixture. In the second step of this study, time dependent calculations showed that for the natural uranium mixture, operation time and burnup values were found as 1935 days and 177.76 GWd/MTU, respectively, while these values for thorium mixture were 1925 days and 153.95 GWd/MTU.
Riego Pérez Albert - One of the best experts on this subject based on the ideXlab platform.
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Measurement of the neutron capture cross section of the Fissile Isotope 235U with the CERN n_TOF Total Absorption Calorimeter and a fission tagging based on micromegas detectors
2014Co-Authors: Mendoza E., Cano-ott D, Balibrea-correa J., Calviño Tavares Francisco, Cortés Rossell, Guillem Pere, Riego Pérez AlbertAbstract:Actual and future nuclear technologies require more accurate nuclear data on the (n, gamma) cross sections and -ratios of Fissile Isotopes. Their measurement presents several difficulties, mainly related to the strong fission gamma-ray background competing with the weaker gamma-ray cascades used as the experimental signature of the (n,gamma) process. A specific setup has been used at the CERN n_TOF facility in 2012 for the measurement of the (n,gamma) cross section and alpha-ratios of Fissile Isotopes and used for the case of the 235U Isotope. The setup consists in a set of micromegas fission detectors surrounding 235U samples and placed inside the segmented BaF2 Total Absorption Calorimeter
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Measurement of the neutron capture cross section of the Fissile Isotope 235U with the CERN n_TOF Total Absorption Calorimeter and a fission tagging based on micromegas detectors
2014Co-Authors: Mendoza E., Cano-ott D, Balibrea-correa J., Calviño Tavares Francisco, Cortés Rossell, Guillem Pere, Riego Pérez AlbertAbstract:Actual and future nuclear technologies require more accurate nuclear data on the (n, gamma) cross sections and -ratios of Fissile Isotopes. Their measurement presents several difficulties, mainly related to the strong fission gamma-ray background competing with the weaker gamma-ray cascades used as the experimental signature of the (n,gamma) process. A specific setup has been used at the CERN n_TOF facility in 2012 for the measurement of the (n,gamma) cross section and alpha-ratios of Fissile Isotopes and used for the case of the 235U Isotope. The setup consists in a set of micromegas fission detectors surrounding 235U samples and placed inside the segmented BaF2 Total Absorption Calorimeter.Postprint (published version
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Measurement of the neutron capture cross section of the Fissile Isotope 235U with the CERN n TOF total absorption calorimeter and a fission tagging based on micromegas detectors
'Elsevier BV', 2014Co-Authors: Altstadt Sebastian, Calviño Tavares Francisco, Cortés Rossell, Guillem Pere, Andrzejewski Józef, Audouin Ludmila, Berthoumieux Eric, Gómez Hornillos, María Belén, Riego Pérez AlbertAbstract:Current and future nuclear technologies require more accurate nuclear data on (n,¿) cross sections and the alpha-ratios of Fissile Isotopes. Their measurement presents several difficulties, mainly related to the strong fission gamma-ray background competing with the weaker gamma-ray cascades used as the experimental signature of the (n,¿) process. A specific setup was used at the CERN n TOF facility in 2012 for the measurement of the (n,gamma) cross section and alpha-ratios of Fissile Isotopes and used for the case of the 235U Isotope. The setup consists of a set of micromegas fission detectors surrounding the 235U samples all placed inside a segmented BaF2 Total Absorption Calorimeter.Postprint (published version
Mendoza E. - One of the best experts on this subject based on the ideXlab platform.
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Measurement of the neutron capture cross section of the Fissile Isotope 235U with the CERN n_TOF Total Absorption Calorimeter and a fission tagging based on micromegas detectors
2014Co-Authors: Mendoza E., Cano-ott D, Balibrea-correa J., Calviño Tavares Francisco, Cortés Rossell, Guillem Pere, Riego Pérez AlbertAbstract:Actual and future nuclear technologies require more accurate nuclear data on the (n, gamma) cross sections and -ratios of Fissile Isotopes. Their measurement presents several difficulties, mainly related to the strong fission gamma-ray background competing with the weaker gamma-ray cascades used as the experimental signature of the (n,gamma) process. A specific setup has been used at the CERN n_TOF facility in 2012 for the measurement of the (n,gamma) cross section and alpha-ratios of Fissile Isotopes and used for the case of the 235U Isotope. The setup consists in a set of micromegas fission detectors surrounding 235U samples and placed inside the segmented BaF2 Total Absorption Calorimeter
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Measurement of the neutron capture cross section of the Fissile Isotope 235U with the CERN n_TOF Total Absorption Calorimeter and a fission tagging based on micromegas detectors
2014Co-Authors: Mendoza E., Cano-ott D, Balibrea-correa J., Calviño Tavares Francisco, Cortés Rossell, Guillem Pere, Riego Pérez AlbertAbstract:Actual and future nuclear technologies require more accurate nuclear data on the (n, gamma) cross sections and -ratios of Fissile Isotopes. Their measurement presents several difficulties, mainly related to the strong fission gamma-ray background competing with the weaker gamma-ray cascades used as the experimental signature of the (n,gamma) process. A specific setup has been used at the CERN n_TOF facility in 2012 for the measurement of the (n,gamma) cross section and alpha-ratios of Fissile Isotopes and used for the case of the 235U Isotope. The setup consists in a set of micromegas fission detectors surrounding 235U samples and placed inside the segmented BaF2 Total Absorption Calorimeter.Postprint (published version
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Measurement of the neutron capture cross section of the Fissile Isotope 235U with the CERN n_TOF total absorption calorimeter and a fission tagging based on micromegas detectors
'Elsevier BV', 2014Co-Authors: Balibrea J., Berthoumieux E., Mendoza E., Cano-ott D, Guerrero C., Altstadt S., Andrzejewski J., Audouin L., Barbagallo M.Abstract:Current and future nuclear technologies require more accurate nuclear data on (n,γ) cross sections and the α-ratios of Fissile Isotopes. Their measurement presents several difficulties, mainly related to the strong fission γ-ray background competing with the weaker γ-ray cascades used as the experimental signature of the (n,γ) process. A specific setup was used at the CERN n TOF facility in 2012 for the measurement of the (n,γ) cross section and α-ratios of Fissile Isotopes and used for the case of the 235U Isotope. The setup consists of a set of micromegas fission detectors surrounding the 235U samples all placed inside a segmented BaF2 Total Absorption Calorimeter.JRC.D.4-Standards for Nuclear Safety, Security and Safeguard
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Measurement of the neutron capture cross section of the Fissile Isotope $^{235}$U with the CERN n_TOF Total Absorption Calorimeter and a fission tagging based on micromegas detectors
2014Co-Authors: Mendoza E., Balibrea J., Berthoumieux E., Cano-ott D, Guerrero C., Altstadt S., Andrzejewski J., Audouin L., Barbagallo M.Abstract:Actual and future nuclear technologies require more accurate nuclear data on the (n, $\gamma$) cross sections and $\alpha$-ratios of Fissile Isotopes. Their measurement presents several difficulties, mainly related to the strong fission $\gamma$-ray background competing with the weaker $\gamma$-ray cascades used as the experimental signature of the (n, $\gamma$) process. A specific setup has been used at the CERN n_TOF facility in 2012 for the measurement of the (n,$\gamma$ ) cross section and $\alpha$- ratios of Fissile Isotopes and used for the case of the $^{235}$U Isotope. The setup consists in a set of micromegas fission detectors surrounding $^{235}$U samples and placed inside the segmented BaF$_2$ Total Absorption Calorimeter