Radiative neutron capture on 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Pu</mml:mi><mml:mprescripts/><mml:none/><mml:mn>242</mml:mn></mml:mmultiscripts></mml:math>
 in the resonance region at the CERN n_TOF-EAR1 facility

Lerendegui-Marco, J.; Guerrero, C.; Mendoza, E.; Quesada, J.; Eberhardt, Κ.; Junghans, A. R.; Krtička, M.; Aberle, O.; Andrzejewski, J.; Audouin, L.; Bécares, V.; Bacak, M.; Balibrea, J.; Barbagallo, M.; Barros, S.; Bečvář, F.; Beinrucker, C.; Berthoumieux, E.; Billowes, J.; Bosnar, D.; Brügger, M.; Caamaño, M.; Calviño, F.; Calviani, M.; Cano‐Ott, D.; Cardella, R.; Casanovas, A.; Castelluccio, Donato Maurizio; Cerutti, F.; Chen, Y. H.; Chiaveri, E.; Colonna, N.; Cortés, G.; Cortés‐Giraldo, M. A.; Coséntino, L.; Damone, L. A.; Diakaki, Μ.; Dietz, M.; Domingo‐Pardo, C.; Dressler, R.; Dupont, E.; Durán, I.; Fernández–Domínguez, B.; Ferrari, A.; Ferreira, Paulo Ricardo Araújo; Finocchiaro, P.; Furman, V.; Göbel, K.; García, A. R.; Gawlik, A.; Glodariu, T.; Gonçalves, I. F.; González‐Romero, E.; Goverdovski, A.; Griesmayer, E.; Gunsing, F.; Harada, Hideo; Heftrich, T.; Heinitz, S.; Heyse, J.; Jenkins, D. G.; Jericha, E.; Käppeler, F.; Kadi, Y.; Katabuchi, T.; Kavrigin, P.; Ketlerov, V.; Khryachkov, V.; Kimura, Akira; Kivel, N.; Kokkoris, M.; Leal-Cidoncha, E.; Lederer, C.; Leeb, H.; Meo, S. Lo; Lonsdale, S. J.; Losito, R.; Macina, D.; Marganiec, J.; Martínez, T.; Massimi, C.; Mastinu, P.; Mastromarco, M.; Matteuccí, F.; Maugeri, E. A.; Mengoni, A.; Milazzo, Paolo; Mingrone, F.; Mirea, M.; Montesano, S.; Musumarra, A.; Nolte, Roeland J. M.; Oprea, A.; Patronis, N.; Pavlik, A.; Perkowski, J.; Porras, I.; Praena, J.; Rajeev, K. P.; Rauscher, T.; Reifarth, R.; Riego, A.; Rout, P. C.; Rubbia, C.; Ryan, J. A.; Sabaté-Gilarte, M.; Saxena, A.; Schillebeeckx, P.; Schmidt, S.; Schumann, D.; Sedyshev, P.; Smith, A. G.; Stamatopoulos, A.; Tagliente, G.; Taín, J. L.; Tarifeño-Saldivia, A.; Tassan‐Got, L.; Tsinganis, A.; Valenta, S.; Vannini, G.; Variale, V.; Vaz, P.; Ventura, A.; Vlachoudis, V.; Vlastou, R.; Wallner, A.; Warren, S.; Weigand, M.; Weiß, C.; Wolf, C.; Woods, P. J.; Wright, T.; Žugec, P.

doi:10.1103/physrevc.97.024605

Cited by 26 publications

(11 citation statements)

References 40 publications

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“…We used the same analysis procedure as in Ref. [48]. From the comparison of the simulations with the experimental results we obtained D 0 = 0.56 ± 0.04 eV, which is fully compatible with the values of D 0 derived from the previous method.…”

Section: A Analysis Of the Resolved Resonance Regionsupporting

confidence: 80%

Measurement and analysis of theAm241neutron capture cross section at the n_TOF facility at CERN

Mendoza¹,

Cano‐Ott²,

Altstadt³

et al. 2018

Phys. Rev. C

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The 241 Am(n,γ ) cross section has been measured at the n_TOF facility at CERN with the n_TOF BaF 2 Total Absorption Calorimeter in the energy range between 0.2 eV and 10 keV. Our results are analyzed as resolved resonances up to 700 eV, allowing a more detailed description of the cross section than in the current evaluations, which contain resolved resonances only up to 150-160 eV. The cross section in the unresolved resonance region is perfectly consistent with the predictions based on the average resonance parameters deduced from the resolved resonances, thus obtaining a consistent description of the cross section in the full neutron energy range under study. Below 20 eV, our results are in reasonable agreement with JEFF-3.2 as well as with the most recent direct measurements of the resonance integral, and differ up to 20-30% with other experimental data. Between 20 eV and 1 keV, the disagreement with other experimental data and evaluations gradually decreases, in general, with the neutron energy. Above 1 keV, we find compatible results with previously existing values.

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Section: A Analysis Of the Resolved Resonance Regionsupporting

confidence: 80%

Measurement and analysis of theAm241neutron capture cross section at the n_TOF facility at CERN

Mendoza¹,

Cano‐Ott²,

Altstadt³

et al. 2018

Phys. Rev. C

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“…The numbers of observed resonances above certain thresholds in the resonance kernel were compared to the simulated resonance sequences assuming the validity of the statistical model as in Ref. [38]. Our data are perfectly consistent with D 0 = 830(100) eV; this value is compatible within 2σ with the literature value of 1170(230) eV [36,37].…”

supporting

confidence: 79%

Measurement of the Ge70(n,γ) cross section up to 300 keV at the CERN n_TOF facility

Gawlik¹,

Lederer-Woods²,

Andrzejewski³

et al. 2019

Phys. Rev. C

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Neutron capture data on intermediate mass nuclei are of key importance to nucleosynthesis in the weak component of the slow neutron capture processes, which occurs in massive stars. The (n, γ) cross section on 70 Ge, which is mainly produced in the s process, was measured at the neutron time-of-flight facility n_TOF at CERN. Resonance capture kernels were determined up to 40 keV neutron energy and average cross sections up to 300 keV. Stellar cross sections were calculated from kT = 5 keV to kT = 100 keV and are in very good agreement with a previous measurement by Walter and Beer (1985) and recent evaluations. Average cross sections are in agreement with Walter and Beer (1985) over most of the neutron energy range covered, while they are systematically smaller for neutron energies above 150 keV. We have calculated isotopic abundances produced in s-process environments in a 25 solar mass star for two initial metallicities (below solar and close to solar). While the low metallicity model reproduces best the solar system germanium isotopic abundances, the close to solar model shows a good global match to solar system abundances in the range of mass numbers A = 60-80.

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“…Recommended evaluation or resonance parameters Comments 236 U(n,g) +2.2 ± 1.9% JENDL-4.0 JENDL-4.0 suggests an increase of +2% of the capture resonance integral. 242 Pu(n,g) +3.8 ± 2.8% Resonance parameters from reference [29] Recent time-of-flight measurements carried out at the n_TOF facility propose an increase of about +4% of the capture resonance integral. 240 Pu(n,g) +4.2 ± 2.8% Resonance parameters from reference [39] Recent resonance analysis suggests a slight increase of about +0.6% of the capture area of the 1st resonance.…”

Section: Ida Resultsmentioning

confidence: 99%

“…Pu [29] n_TOF 243 Am [30] 238 Pu(n,g) [27] MAESTRO program [24][25][26] 1984 [32] 2009 [33] 2017 [34] 153…”

Section: Recommended Evaluated Nuclear Data Files and Resonance Parammentioning

confidence: 99%

Feedback from experimental isotopic compositions of used nuclear fuels on neutron cross sections and cumulative fission yields of the JEFF-3.1.1 library by using integral data assimilation

Rizzo¹,

Vaglio–Gaudard²,

Noguère³

et al. 2019

EPJ Nuclear Sci. Technol.

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Comparisons of calculated and experimental isotopic compositions of used nuclear fuels can provide valuable information on the quality of nuclear data involved in neutronic calculations. The experimental database used in the present study − containing more than a thousand isotopic ratio measurements for UOX and MOX fuels with burnup ranging from 10 GWd/t up to 85 GWd/t − allowed to investigate 45 isotopic ratios covering a large number of actinides (U, Np, Pu, Am and Cm) and fission products (Nd, Cs, Sm, Eu, Gd, Ru, Ce, Tc, Mo, Ag and Rh). The Integral Data Assimilation procedure implemented in the CONRAD code was used to provide nuclear data trends with realistic uncertainties for Pressurized Water Reactors (PWRs) applications. Results confirm the quality of the 235U, 239Pu and 241Pu neutron capture cross sections available in the JEFF-3.1.1 library; slight increases of +1.2 ± 2.4%, +0.5 ± 2.2% and +1.2 ± 4.2% are respectively suggested, these all being within the limits of the quoted uncertainties. Additional trends on the capture cross sections were also obtained for other actinides (236U, 238Pu, 240Pu, 242Pu, 241Am, 243Am, 245Cm) and fission products (103Rh, 153Eu, 154Eu) as well as for the 238U(n,2n) and 237Np(n,2n) reactions. Meaningful trends for the cumulative fission yields of 144Ce, 133Cs, 137Cs and 106Ru for the 235U(nth,f) and 239Pu(nth,f) reactions are also reported.

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Radiative neutron capture on Pu242 in the resonance region at the CERN n_TOF-EAR1 facility

Cited by 26 publications

References 40 publications

Measurement and analysis of theAm241neutron capture cross section at the n_TOF facility at CERN

Measurement and analysis of theAm241neutron capture cross section at the n_TOF facility at CERN

Measurement of the Ge70(n,γ) cross section up to 300 keV at the CERN n_TOF facility

Feedback from experimental isotopic compositions of used nuclear fuels on neutron cross sections and cumulative fission yields of the JEFF-3.1.1 library by using integral data assimilation

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