Determination of the 237Np(n,f) reaction cross section for En = 4.5-5.3 MeV, using a MicroMegas detector assembly

Diakaki, Μ.; Kokkoris, M.; Kyrtsos, Alexandros; Skordis, E.; Papadopoulos, C.; Vlastou, R.; Lagoyannis, A.; Andriamonje, S.

doi:10.1140/epja/i2013-13062-3

Cited by 11 publications

(12 citation statements)

References 25 publications

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“…Details on the experiment and the analysis procedure can be found in [5]. The cross section results on the 237 Np(n,f) taking 238 U as a reference are in agreement with previous data.…”

Section: Detector Performancesupporting

confidence: 83%

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Fission cross section measurements with the MicroMegas detector

Diakaki

Kokkoris

Kyrtsos

et al. 2019

hnps

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A new MicroMegas detector, based on the innovative Microbulk technology, especially developed within the context of the n TOF collaboration, was used for the first time for fission cross section measurements with monoenergetic neutron beams at the Institute of Nuclear and Particle Physics of the NCSR “Demokritos”. The detector assembly was successfully used in the case of the measurement of the 237Np(n,f) cross section while the first results on the performance of the detector as far as the gain and resolution function are concerned are reported.

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“…Details on the experiment and the analysis procedure can be found in [5]. The cross section results on the 237 Np(n,f) taking 238 U as a reference are in agreement with previous data.…”

Section: Detector Performancesupporting

confidence: 83%

“…The inset contains the same spectrum zoomed at the fission fragment pulses, in a linear scale. The picture is taken from [5].…”

Section: Discussionmentioning

confidence: 99%

Fission cross section measurements with the MicroMegas detector

Diakaki

Kokkoris

Kyrtsos

et al. 2019

hnps

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“…The error bars correspond to the statistical uncertainties. The present data are compared to the experimental data of Paradela [3] (obtained from the same facility) and Diakaki [2] (obtained with the same target at another neutron production facility as explained in the text), and the evaluations ENDF/B-VII.1 [23], JEFF 3.2 [25], and JENDL 4.0 [24]. statistical uncertainties are shown in the figures.…”

Section: Resultsmentioning

confidence: 99%

“…The experimental procedure, analysis, and results are described in detail in Refs. [2] and [34] and are briefly mentioned in the following paragraphs.…”

Section: The Targetsmentioning

confidence: 99%

“…There are a number of cross-sectional data on the 237 Np(n,f ) reaction in the international database EXFOR [1], most using 235 U(n,f ) as reference [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], as well as 237 Np/ 235 U fission cross-sectional ratios [19][20][21][22]. However, these data exhibit discrepancies that reach 8%, mainly at the first and second chance fission plateaus.…”

Section: Introductionmentioning

confidence: 99%

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Neutron-induced fission cross section ofNp237in the keV to MeV range at the CERN n_TOF facility

Diakaki¹,

Karadimos²,

Vlastou³

et al. 2016

Phys. Rev. C

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The neutron-induced fission cross section of 237 Np was experimentally determined at the high-resolution and high-intensity facility n TOF, at CERN, in the energy range 100 keV to 9 MeV, using the 235 U(n,f) and 238 U(n,f) cross section standards below and above 2 MeV, respectively. A fast ionization chamber was used in order to detect the fission fragments from the reactions and the targets were characterized as far as their mass and homogeneity are concerned by means of α spectroscopy and Rutherford backscattering spectroscopy respectively. Theoretical calculations within the Hauser-Feshbach formalism have been performed, employing the EMPIRE code, and the model parameters were tuned in order to successfully reproduce the experimental fission cross-sectional data and simultaneously all the competing reaction channels.

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