Neutron induced fission of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Pu</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>240</mml:mn><mml:mo>,</mml:mo><mml:mn>242</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>from 1 eV to 200 MeV

Tôvesson, F.; Hill, T. S.; Mocko, M.; Baker, J. D.; McGrath, C. A.

doi:10.1103/physrevc.79.014613

Cited by 52 publications

(65 citation statements)

References 29 publications

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“…The previous experiment carried out at the n TOF's Experimental Area 1 (EAR-1), was unsuccessful due to detector deterioration caused by the high alpha activity of the 240 Pu samples in addition to the long period needed to complete the measurement [5], therefore the neutron induced fission cross section had to be remeasured in the newly constructed experimental area EAR-2, which offers a higher background suppression and a significantly higher instantaneous neutron flux, thus reducing the time needed to complete the measurement. Similar recent measurements have also been performed at GNEIS [6], LANSCE [7] and IRMM [8].…”

Section: Introductionsupporting

confidence: 51%

Measurement of the²⁴⁰Pu(n,f) cross-section at the CERN n_TOF facility: First results from experimental area II (EAR-2)

et al. 2017

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Abstract. The accurate knowledge of the neutron-induced fission cross-sections of actinides and other isotopes involved in the nuclear fuel cycle is essential for the design of advanced nuclear systems, such as Generation-IV nuclear reactors. Such experimental data can also provide the necessary feedback for the adjustment of nuclear model parameters used in the evaluation process, resulting in the further development of nuclear fission models. In the present work, the 240 Pu(n,f) cross-section was measured at CERN's n TOF facility relative to the well-known 235 U(n,f) cross section, over a wide range of neutron energies, from meV to almost MeV, using the time-of-flight technique and a set-up based on Micromegas detectors. This measurement was the first experiment to be performed at n TOF's new experimental area (EAR-2), which offers a significantly higher neutron flux compared to the already existing experimental area (EAR-1). Preliminary results as well as the experimental procedure, including a description of the facility and the data handling and analysis, are presented.

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Section: Introductionsupporting

confidence: 51%

Measurement of the²⁴⁰Pu(n,f) cross-section at the CERN n_TOF facility: First results from experimental area II (EAR-2)

et al. 2017

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“…(The accuracy of the evaluated data is usually not declared. In the region of interest, 0.01 < T 9 < MeV, the accuracy of up-to-date measurements for plutonium isotopes by Tovesson et al 2009 varies from 2% to 15%, and for our plots is not bigger than the plot signs. The detailed experimental information can be found in the experimental nuclear reaction data library 2009.)…”

Section: The Statistical Model and Nuclear Data Inputmentioning

confidence: 90%

Neutron-induced astrophysical reaction rates for translead nuclei

Panov

Korneev

Rauscher

et al. 2010

A&A

120

107

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Neutron-induced reaction rates, including fission and neutron capture, are calculated in the temperature range 10 8 ≤ T (K) ≤ 10 10 within the framework of the statistical model for targets with the atomic number 84 ≤ Z ≤ 118 (from Po to Uuo) from the neutron to the proton drip-line. Four sets of rates have been calculated, utilizing -where possible -consistent nuclear data for neutron separation energies and fission barriers from Thomas-Fermi (TF), Extended Thomas-Fermi plus Strutinsky Integral (ETFSI), Finite-Range Droplet Model (FRDM) and Hartree-Fock-Bogolyubov (HFB) predictions. Tables of calculated values as well as analytic seven parameter fits in the standard REACLIB format are supplied. We also discuss the sensitivity of the rates to the input, aiming at a better understanding of the variations introduced by the nuclear input.

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“…Compared to the data of Staples et al [22], the accordance in absolute scale is above 99%. The discrepancy to the Tovesson [4] data set is around 2% in the considered energy range. Larger deviations to the Weigmann data [20] in the order of 5.4% are present especially in the plateau region between 1.2 MeV and 5 MeV.…”

Section: Resultsmentioning

confidence: 91%

“…[3]. Results of measurements at the Los Alamos National Laboratory by Tovesson et al [4] and at the Joint Research Center Geel by Salvador-Castiñeira et al [3] were published recently and tend to be lower than present evaluated nuclear data [5].…”

Section: Introductionmentioning

confidence: 83%

Fast-neutron-induced fission of²⁴²Pu atnELBE

et al. 2017

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Abstract. The fast neutron-induced fission cross section of 242 Pu was determined in the range of 0.5 MeV to 10 MeV relative to 235 U(n,f) at the neutron time-of-flight facility nELBE. The number of target nuclei was calculated by means of measuring the spontaneous fission rate of 242 Pu. Neutron transport simulations with Geant4 and MCNP6 are used to correct the relative cross section for neutron scattering. The determined results are in good agreement with current experimental and evaluated data sets.

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Neutron induced fission ofPu240,242from 1 eV to 200 MeV

Cited by 52 publications

References 29 publications

Measurement of the²⁴⁰Pu(n,f) cross-section at the CERN n_TOF facility: First results from experimental area II (EAR-2)

Measurement of the²⁴⁰Pu(n,f) cross-section at the CERN n_TOF facility: First results from experimental area II (EAR-2)

Neutron-induced astrophysical reaction rates for translead nuclei

Fast-neutron-induced fission of²⁴²Pu atnELBE

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Neutron induced fission ofPu240,242from 1 eV to 200 MeV

Cited by 52 publications

References 29 publications

Measurement of the240Pu(n,f) cross-section at the CERN n_TOF facility: First results from experimental area II (EAR-2)

Measurement of the240Pu(n,f) cross-section at the CERN n_TOF facility: First results from experimental area II (EAR-2)

Neutron-induced astrophysical reaction rates for translead nuclei

Fast-neutron-induced fission of242Pu atnELBE

Contact Info

Product

Resources

About

Measurement of the²⁴⁰Pu(n,f) cross-section at the CERN n_TOF facility: First results from experimental area II (EAR-2)

Measurement of the²⁴⁰Pu(n,f) cross-section at the CERN n_TOF facility: First results from experimental area II (EAR-2)

Fast-neutron-induced fission of²⁴²Pu atnELBE