Isabel Gonçalves
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Research Interests
Isabel Gonçalves has a total of 669 co-authors. Here are the top co-authors by number of shared publications:
- Pedro Vaz
Instituto Superior Técnico, 1049-001 Lisbon, Portugal
71 shared publications - Alberto Mengoni
European Organization for Nuclear Research (CERN), 1211 Geneva, Switzerland
61 shared publications - Andreas Pavlik
Universität Wien
60 shared publications - César Domingo Pardo
Instituto de Fisica Corpuscular
60 shared publications - Erwin Jericha
Atominstitut, Technische Universität Wien, Stadionallee 2, 1020 Wien, Austria
60 shared publications - Guillem Cortes
Universitat Politècnica de Catalunya, 08034 Barcelona, Spain
60 shared publications
Latest Publications
- Open Access
- 1 December 2013
- Published by Elsevier in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- Vol. 732, 190-194
A new CVD diamond mosaic-detector for (n, ) cross-section measurements at the n_TOF experiment at CERN- 1 December 2013
- Published by Elsevier in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- Vol. 732, 190-194
Open AccessA new CVD diamond mosaic-detector for (n, ) cross-section measurements at the n_TOF experiment at CERN - Open Access
- 25 February 2013
- Published by Springer Nature in The European Physical Journal A
- Vol. 49 (2) , 27
Performance of the neutron time-of-flight facility n_TOF at CERN
- 25 February 2013
- Published by Springer Nature in The European Physical Journal A
- Vol. 49 (2) , 27
Open AccessPerformance of the neutron time-of-flight facility n_TOF at CERN
- Open Access
- 8 January 2013
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 110 (2) , 022501
Neutron Capture Cross Section of Unstable: Implications for Stellar NucleosynthesisThe cross section has been measured for the first time at the neutron time-of-flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total, capture kernels of 12 (new) resonances were determined. Maxwellian averaged cross sections were calculated for thermal energies from with uncertainties around 20%. Stellar model calculations for a star show that the new data have a significant effect on the -process production of , , and in massive stars, allowing stronger constraints on the Cu yields from explosive nucleosynthesis in the subsequent supernova.- 8 January 2013
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 110 (2) , 022501
Open AccessNeutron Capture Cross Section of Unstable: Implications for Stellar NucleosynthesisThe cross section has been measured for the first time at the neutron time-of-flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total, capture kernels of 12 (new) resonances were determined. Maxwellian averaged cross sections were calculated for thermal energies from with uncertainties around 20%. Stellar model calculations for a star show that the new data have a significant effect on the -process production of , , and in massive stars, allowing stronger constraints on the Cu yields from explosive nucleosynthesis in the subsequent supernova. - Open Access
- 7 January 2013
- Published by Springer Nature in The European Physical Journal A
- Vol. 49 (1) , 2
Measurement of the neutron-induced fission cross-section of 241Am at the time-of-flight facility n_TOF
- 7 January 2013
- Published by Springer Nature in The European Physical Journal A
- Vol. 49 (1) , 2
Open AccessMeasurement of the neutron-induced fission cross-section of 241Am at the time-of-flight facility n_TOF
- 28 September 2012
- Published by IOP Publishing in Physica Scripta
- Vol. T150
Neutron-induced fission cross section measurement of233U,241Am and243Am in the energy range 0.5 MeV ⩽En⩽ 20 MeV at n_TOF at CERN
- 28 September 2012
- Published by IOP Publishing in Physica Scripta
- Vol. T150
Neutron-induced fission cross section measurement of233U,241Am and243Am in the energy range 0.5 MeV ⩽En⩽ 20 MeV at n_TOF at CERN
- 18 September 2012
- Published by Oxford University Press (OUP) in Radiation Protection Dosimetry
- Vol. 154 (3) , 346-355
Dosimetric assessment and characterisation of the neutron field around a Howitzer container using a Bonner sphere spectrometer, Monte Carlo simulations and the NSDann and NSDUAZ unfolding codes
The Neutron Measurements Laboratory at the Nuclear Engineering Department of the Polytechnic University of Madrid consists of a bunker-like room and was built for neutron dosimetry research purposes and measurements. The facility includes a 74-GBq 241Am–Be neutron source placed inside a neutron Howitzer container. The source can be moved to the irradiation or to the storage position. In this work, a Bonner sphere spectrometer (BSS) was used to measure the neutron fluence spectra with the source in both positions. Ambient dose equivalent rates, *(10), were measured using a calibrated neutron area monitor LB6411 (Berthold). The measured count rates were used as input to the NSDann and NSDUAZ unfolding programs to obtain the neutron fluence spectra and *(10). Monte Carlo (MC) simulation methods were used to model the system and to calculate the neutron fluence rate and the ambient dose equivalent rate at the measurement points. The comparison between NSDUAZ and NSDann resulted in relative deviations up to 6.87 % in the total neutron fluence rate and 7.18 % in *(10) values, despite the differences in the shape of the spectra obtained for the irradiation position. Comparing with the measured values, the *(10) values obtained with the unfolding programs exhibit a maximum relative deviation of 12.19 %. Taking into account the associated uncertainties, MC simulations seem to be in reasonable agreement with measurements. A maximum relative deviation of 15.65 % between computed and measured *(10) values was obtained. The computed count rates were applied to the unfolding programs to calculate the total neutron fluence rate and a maximum deviation of 12.83 % was obtained between the original values calculated by NSDann. A sensitivity test showed that the NSDann unfolding program is very sensitive to the uncertainties of the BSS count rates.
- 18 September 2012
- Published by Oxford University Press (OUP) in Radiation Protection Dosimetry
- Vol. 154 (3) , 346-355
Dosimetric assessment and characterisation of the neutron field around a Howitzer container using a Bonner sphere spectrometer, Monte Carlo simulations and the NSDann and NSDUAZ unfolding codes
The Neutron Measurements Laboratory at the Nuclear Engineering Department of the Polytechnic University of Madrid consists of a bunker-like room and was built for neutron dosimetry research purposes and measurements. The facility includes a 74-GBq 241Am–Be neutron source placed inside a neutron Howitzer container. The source can be moved to the irradiation or to the storage position. In this work, a Bonner sphere spectrometer (BSS) was used to measure the neutron fluence spectra with the source in both positions. Ambient dose equivalent rates, *(10), were measured using a calibrated neutron area monitor LB6411 (Berthold). The measured count rates were used as input to the NSDann and NSDUAZ unfolding programs to obtain the neutron fluence spectra and *(10). Monte Carlo (MC) simulation methods were used to model the system and to calculate the neutron fluence rate and the ambient dose equivalent rate at the measurement points. The comparison between NSDUAZ and NSDann resulted in relative deviations up to 6.87 % in the total neutron fluence rate and 7.18 % in *(10) values, despite the differences in the shape of the spectra obtained for the irradiation position. Comparing with the measured values, the *(10) values obtained with the unfolding programs exhibit a maximum relative deviation of 12.19 %. Taking into account the associated uncertainties, MC simulations seem to be in reasonable agreement with measurements. A maximum relative deviation of 15.65 % between computed and measured *(10) values was obtained. The computed count rates were applied to the unfolding programs to calculate the total neutron fluence rate and a maximum deviation of 12.83 % was obtained between the original values calculated by NSDann. A sensitivity test showed that the NSDann unfolding program is very sensitive to the uncertainties of the BSS count rates.
- 9 July 2012
- Published by American Physical Society (APS) in Physical Review C
- Vol. 86 (1) , 019902
Publisher's Note: Measurement of resolved resonances ofTh(,) at the n_TOF facility at CERN [Phys. Rev. C85, 064601 (2012)]DOI: https://doi.org/10.1103/PhysRevC.86.019902
- 9 July 2012
- Published by American Physical Society (APS) in Physical Review C
- Vol. 86 (1) , 019902
Publisher's Note: Measurement of resolved resonances ofTh(,) at the n_TOF facility at CERN [Phys. Rev. C85, 064601 (2012)]DOI: https://doi.org/10.1103/PhysRevC.86.019902
- 1 June 2012
- Published by American Physical Society (APS) in Physical Review C
- Vol. 85 (6) , 064601
Measurement of resolved resonances ofTh() at the n_TOF facility at CERNThe yield of the neutron capture reaction Th() has been measured at the neutron time-of-flight facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The reduction of the acquired data to the capture yield for resolved resonances from 1 eV to 4 keV is described and compared to a recent evaluated data set. The resonance parameters were used to assign an orbital momentum to each resonance. A missing level estimator was used to extract the -wave level spacing of eV.- 1 June 2012
- Published by American Physical Society (APS) in Physical Review C
- Vol. 85 (6) , 064601
Measurement of resolved resonances ofTh() at the n_TOF facility at CERNThe yield of the neutron capture reaction Th() has been measured at the neutron time-of-flight facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The reduction of the acquired data to the capture yield for resolved resonances from 1 eV to 4 keV is described and compared to a recent evaluated data set. The resonance parameters were used to assign an orbital momentum to each resonance. A missing level estimator was used to extract the -wave level spacing of eV.- 20 April 2012
- Published by American Physical Society (APS) in Physical Review C
- Vol. 85 (4) , 044616
Measurement and resonance analysis of theNp neutron capture cross sectionThe neutron capture cross section of Np was measured between 0.7 and 500 eV at the CERN n_TOF facility using the 4 BaF Total Absorption Calorimeter. The experimental capture yield was extracted minimizing all the systematic uncertainties and was analyzed together with the most reliable transmission data available using the sammy code. The result is a complete set of individual as well as average resonance parameters [ eV, meV, , fm]. The capture cross section obtained in this work is in overall agreement with the evaluations and the data of Weston and Todd [Nucl. Sci. Eng. 79, 184 (1981)], thus showing sizable differences with respect to previous data from Scherbakov et al. [J. Nucl. Sci. Technol. 42, 135 (2005)] and large discrepancies with data Kobayashi et al. [ J. Nucl. Sci. Technol. 39, 111 (2002)]. The results indicate that a new evaluation combining the present capture data with reliable transmission data would allow reaching an accuracy better than 4, in line with the uncertainty requirements of the nuclear data community for the design and operation of current and future nuclear devices.- 20 April 2012
- Published by American Physical Society (APS) in Physical Review C
- Vol. 85 (4) , 044616
Measurement and resonance analysis of theNp neutron capture cross sectionThe neutron capture cross section of Np was measured between 0.7 and 500 eV at the CERN n_TOF facility using the 4 BaF Total Absorption Calorimeter. The experimental capture yield was extracted minimizing all the systematic uncertainties and was analyzed together with the most reliable transmission data available using the sammy code. The result is a complete set of individual as well as average resonance parameters [ eV, meV, , fm]. The capture cross section obtained in this work is in overall agreement with the evaluations and the data of Weston and Todd [Nucl. Sci. Eng. 79, 184 (1981)], thus showing sizable differences with respect to previous data from Scherbakov et al. [J. Nucl. Sci. Technol. 42, 135 (2005)] and large discrepancies with data Kobayashi et al. [ J. Nucl. Sci. Technol. 39, 111 (2002)]. The results indicate that a new evaluation combining the present capture data with reliable transmission data would allow reaching an accuracy better than 4, in line with the uncertainty requirements of the nuclear data community for the design and operation of current and future nuclear devices.