2012-05-08
17:45 |
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2011-11-21
10:50 |
(197)Au(n,gamma) cross section in the unresolved resonance region
/ Lederer, C. (Vienna U.) ; Colonna, N. (INFN, Bari) ; Domingo-Pardo, C. (CSIC, Catalunya) ; Gunsing, F. (DAPNIA, Saclay) ; Kappeler, F. (Karlsruhe, Inst. Technol.) ; Massimi, C. (INFN, Bologna ; Bologna U.) ; Mengoni, A. (CERN ; IAEA, Vienna) ; Wallner, A. (Vienna U.) ; Abbondanno, U. (INFN, Trieste) ; Aerts, G. (DAPNIA, Saclay) et al.
The cross section of the reaction (197)Au(n,gamma) was measured with the time-of-flight technique at the n_TOF (neutron time-of-flight) facility in the unresolved resonance region between 5 and 400 keV using a pair of C(6)D(6) (where D denotes (2)H) liquid scintillators for the detection of prompt capture gamma rays. The results with a total uncertainty of 3.9%-6.7% for a resolution of 20 bins per energy decade show fair agreement with the Evaluated Nuclear Data File Version B-VII.0 (ENDF B-VII.0), which contains the standard evaluation. [...]
2011
- Published in : Phys. Rev. C 83 (2011) 034608
APS Published version, local copy: PDF;
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2011-11-21
10:48 |
Improved Neutron Capture Cross Section Measurements with the n\_TOF Total Absorption Calorimeter
/ Mendoza, E (Madrid, CIEMAT) ; Prena, J (Seville U.) ; Perkowski, J (Lodz U.) ; Andriamonje, S (CERN) ; Carrapico, C (ITN, Lisbon) ; Moinul, M (INFN, Bari) ; Vannini, G (INFN, Bologna ; Bologna U.) ; Quesada, J M (Seville U.) ; Harrisopulos, S (Democritos Nucl. Res. Ctr.) ; Milazzo, P M (INFN, Trieste) et al.
The n\_TOF collaboration operates a Total Absorption Calorimeter (TAC) {[}1] for measuring neutron capture cross-sections of low-mass and/or radioactive samples. The results obtained with the TAC have led to a substantial improvement of the capture cross sections of (237)Np and (240)Pu {[}2]. [...]
2011
- Published in : J. Korean Phys. Soc. 59 (2011) 1813-1816
In : International Conference on Nuclear Data for Science and Technology 2010, Jeju Island, Republic Of Korea, 26 - 30 Apr 2010, pp.1813-1816
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2011-11-21
10:48 |
Neutron Capture Measuremetns on Minor Actinides at the n\_TOF Facility at CERN: Past, Present and Future
/ Cano-Ott, D (Madrid, CIEMAT) ; Plukis, A (DSM, DAPNIA, Saclay) ; Eleftheriadis, C (Aristotle U., Thessaloniki) ; Leeb, H (Vienna, Tech. U., Atominst.) ; Calvino, F (Madrid, Polytechnic U.) ; Herrera-Martinez, A (INFN, Legnaro) ; Savvidis, I (Aristotle U., Thessaloniki) ; Vlachoudis, V (CERN) ; Haas, B (CENBG, Gradignan) ; Abbondanno, U (INFN, Bari) et al.
The successful development of advanced nuclear systems for sustainable energy production and nuclear waste management depends on high quality nuclear data libraries. Recent sensitivity studies and reports {[}1-3] have identified the need for substantially improving the accuracy of neutron cross-section data for minor actinides. [...]
2011
- Published in : J. Korean Phys. Soc. 59 (2011) 1809-1812
In : International Conference on Nuclear Data for Science and Technology 2010, Jeju Island, Republic Of Korea, 26 - 30 Apr 2010, pp.1809-1812
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2011-11-21
10:48 |
Measurement of the (236)U(n, f) Cross Section at n\_TOF
/ Sarmento, R (ITN, Sacavem) ; Goncalves, I F (ITN, Sacavem) ; Vaz, P (ITN, Sacavem) ; Colonna, N (INFN, Bari) ; Calviani, M (CERN)
A precise knowledge of the (236)U neutron-induced fission cross-section is required for the development of accelerator-driven systems and reactors based on the Th-U cycle. The evaluated data presently stored in the nuclear data libraries rely on outdated experimental measurements and show large discrepancies in the energy region between 1 keV and 100 keV. [...]
2011
- Published in : J. Korean Phys. Soc. 59 (2011) 1793-1796
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2011-11-21
10:47 |
Characterization of the New n\_TOF Neutron Beam: Fluence, Profile and Resolution
/ Guerrero, C (Madrid, CIEMAT) ; Ventura, A (ENEA, Bologna) ; Perkowski, J (Lodz U.) ; Andriamonje, S (CERN) ; Carrapico, C (ITN, Lisbon) ; Moinul, M (INFN, Bari) ; Vannini, G (INFN, Bologna ; Bologna U.) ; Quesada, J M (Seville U.) ; Harrisopulos, S (Democritos Nucl. Res. Ctr.) ; Milazzo, P M (INFN, Trieste) et al.
After a halt of four years, the n\_TOF spallation neutron facility at CERN has resumed operation in November 2008 with a new spallation target characterized by an improved safety and engineering design, resulting in a more robust overall performance and efficient cooling. The first measurement during the 2009 run has aimed at the full characterization of the neutron beam. [...]
2011
- Published in : J. Korean Phys. Soc. 59 (2011) 1624-1627
In : International Conference on Nuclear Data for Science and Technology 2010, Jeju Island, Republic Of Korea, 26 - 30 Apr 2010, pp.1624-1627
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2011-11-21
10:47 |
Past, Present and Future of the n\_TOF Facility at CERN
/ Chiaveri, E (CERN) ; Ventura, A (ENEA, Bologna) ; Perkowski, J (Lodz U.) ; Andriamonje, S (CERN) ; Carrapico, C (ITN, Lisbon) ; Wallner, A (U. Vienna (main)) ; Quesada, J M (Seville U.) ; Harrisopulos, S (Democritos Nucl. Res. Ctr.) ; Milazzo, P M (INFN, Trieste) ; Berthier, B (Orsay, IPN) et al.
The n\_TOF spallation neutron facility is operating at CERN since 2001. Neutrons are produced with a very wide energy range, from thermal up to 1 GeV and with a very high instantaneous flux (10(5)n/cm(2)/pulse at 200 m from target) thanks to the high intensity (7 x 10(12) protons/pulse) and low repetition rate of the Proton Synchrotron (PS) which is delivering protons to a lead spallation target. [...]
2011
- Published in : J. Korean Phys. Soc. 59 (2011) 1620-1623
In : International Conference on Nuclear Data for Science and Technology 2010, Jeju Island, Republic Of Korea, 26 - 30 Apr 2010, pp.1620-1623
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2011-11-21
10:47 |
A New 2D-micromegas Detector for Neutron Beam Diagnostic at n\_TOF
/ Andriamonje, S (CERN) ; Giomataris, Y (Saclay) ; Vlachoudis, V (CERN) ; Guerrero, C (Madrid, CIEMAT) ; Losito, R (CERN) ; Calviani, M (CERN) ; Gunsing, F (Saclay) ; Colonna, N (INFN, Bari) ; Papaevangelou, T (Saclay) ; Berthoumieux, E (Saclay) et al.
A novel detector for 2D neutron beam diagnostic has been jointly developed by CERN and CEA in the framework of the n\_TOF Collaboration for investigation of the neutron beam spatial characteristics, namely position and profile as a function of the neutron energy. The detector is based on the already established MicroMegas ``Bulk{''} technology and has been evolved from the one used for the CAST (CERN Axion Solar Telescope) experiment but equipped with an appropriate neutron/charged particle converter for neutron detection. [...]
2011
- Published in : J. Korean Phys. Soc. 59 (2011) 1601-1604
In : International Conference on Nuclear Data for Science and Technology 2010, Jeju Island, Republic Of Korea, 26 - 30 Apr 2010, pp.1601-1604
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2011-11-21
10:47 |
A Transparent Detector for n\_TOF Neutron Beam Monitoring
/ Andriamonje, S (CERN) ; Giomataris, Y (Saclay) ; Vlachoudis, V (CERN) ; Guerrero, C (Madrid, CIEMAT) ; Schillebeeckx, P (Geel, JRC) ; Losito, R (CERN) ; Sarmento, R (ITN, Lisbon) ; Calviani, M (CERN) ; Giganon, A (Saclay) ; Gunsing, F (Saclay) et al.
In order to obtain high precision cross-section measurements using the time-of-flight technique, it is important to know with good accuracy the neutron fluence at the measuring station. The detector dedicated to these measurements should be placed upstream of the detectors used for capture and fission cross-section measurements. [...]
2011
- Published in : J. Korean Phys. Soc. 59 (2011) 1597-1600
In : International Conference on Nuclear Data for Science and Technology 2010, Jeju Island, Republic Of Korea, 26 - 30 Apr 2010, pp.1597-1600
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2011-11-14
14:24 |
Fission Cross-section Measurements of (233)U, (245)Cm and (241,243)Am at CERN n\_TOF Facility
/ Calviani, M (CERN) ; Calviani, M (CERN) ; Andriamonje, S (CERN) ; Chiaveri, E (CERN) ; Vlachoudis, V (CERN) ; Colonna, N (INFN, Bari) ; Meaze, M H (INFN, Bari) ; Marrone, S (INFN, Bari) ; Tagliente, G (INFN, Bari) ; Terlizzi, R (INFN, Bari) et al.
Neutron-induced fission cross-sections of minor actinides have been measured using the n_TOF white neutron source at CERN, Geneva, as part of a large experimental program aiming at collecting new data relevant for nuclear astrophysics and for the design of advanced reactor systems. The measurements at n_TOF take advantage of the innovative features of the n_TOF facility, namely the wide energy range, high instantaneous neutron flux and good energy resolution. [...]
2011
- Published in : J. Korean Phys. Soc. 59 (2011) 1912-1915
In : International Conference on Nuclear Data for Science and Technology 2010, Jeju Island, Republic Of Korea, 26 - 30 Apr 2010, pp.1912-1915
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