Simultaneous investigation of fission fragments and neutrons in 252Cf (SF)

Budtz-Jørgensen, C.; Knitter, H.-H.

doi:10.1016/0375-9474(88)90508-8

Cited by 206 publications

(140 citation statements)

References 17 publications

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“…The data from this study agree quite well with experimental data available in the literature and show in contrast to the data of Ref. [17] a bump at mass number 80 to 100. In Fig.…”

Section: Resultssupporting

confidence: 37%

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Fission cross-sections, prompt fission neutron and γ-ray emission in request for nuclear applications

Hambsch

Salvador-Castiñeira

Oberstedt

et al. 2016

EPJ Web of Conferences

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Abstract. In recent years JRC-IRMM has been investigating fission cross-sections of 240,242 Pu in the fast-neutron energy range relevant for innovative reactor systems and requested in the High Priority Request List (HPRL) of the OECD/Nuclear Energy Agency (NEA). In addition to that, prompt neutron multiplicities are being investigated for the major isotopes 235 U, 239 Pu in the neutron-resonance region using a newly developed scintillation detector array (SCINTIA) and an innovative modification of the Frisch-grid ionisation chamber for fission-fragment detection. These data are highly relevant for improved neutron data evaluation and requested by the OECD/Working Party on Evaluation Cooperation (WPEC). Thirdly, also prompt fission γ-ray emission is investigated using highly efficient lanthanide-halide detectors with superior timing resolution. Again, those data are requested in the HPRL for major actinides to solve open questions on an under-prediction of decay heat in nuclear reactors. The information on prompt fission neutron and γ-ray emission is crucial for benchmarking nuclear models to study the de-excitation process of neutron-rich fission fragments. Information on γ-ray emission probabilities is also useful in decommissioning exercises on damaged nuclear power plants like Fukushima Daiichi to which JRC-IRMM is contributing. The results on the 240,242 Pu fission cross section, 235 U prompt neutron multiplicity in the resonance region and correlations with fission fragments and prompt γ-ray emission for several isotopes will be presented and put into perspective.

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“…The data from this study agree quite well with experimental data available in the literature and show in contrast to the data of Ref. [17] a bump at mass number 80 to 100. In Fig.…”

Section: Resultssupporting

confidence: 37%

“…The experiment is essentially a reproduction of the experiment performed by Budtz-Jørgensen and Knitter [17]. Experimental details and results have been published elsewhere [14], a few selected results are repeated in the following.…”

Section: Resultsmentioning

confidence: 99%

Fission cross-sections, prompt fission neutron and γ-ray emission in request for nuclear applications

Hambsch

Salvador-Castiñeira

Oberstedt

et al. 2016

EPJ Web of Conferences

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“…[11]. The mass dependence of the prompt fission neutron multiplicity per fragment from this experiment is compared to literature data [7,[14][15][16][17] in the right hand side of Fig. 2.…”

Section: Prompt Fission Neutrons From 252 Cf(sf)mentioning

confidence: 98%

“…Beside the purely experimental interest, recent advances in the theoretical description of prompt emission in fission [8][9][10] require detailed correlation data for verifying the models. The experiment is essentially a reproduction of the experiment performed by Budtz-Jørgensen et al [7] with the traditional analog acquisition system now replaced by a fully digital one and subsequent digital signal processing. Experimental details and main results have been published elsewhere [11], for the sake of clarity, a few selected results will be presented in the following.…”

Section: Prompt Fission Neutrons From 252 Cf(sf)mentioning

confidence: 99%

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Investigating Prompt Fission Neutron Emission from²³⁵U(n,f) in the Resolved Resonance Region

Göök

Hambsch

Oberstedt

2016

EPJ Web of Conferences

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Abstract. Investigations of prompt emission in fission is of importance in understanding the fission process in general and the sharing of excitation energy among the fission fragments in particular. Experimental activities at IRMM on prompt neutron emission from fission in response to OECD/NEA nuclear data requests is presented in this contribution. Main focus lies on currently on-going investigations of prompt neutron emission from the reaction 235 U(n,f) in the region of the resolved resonances. For this reaction strong fluctuations of fission fragment mass distributions and mean total kinetic energy have been observed [Nucl. Phys. A 491, 56 (1989)] as a function of incident neutron energy in the resonance region. In addition fluctuations of prompt neutron multiplicities were also observed [Phys. Rev. C 13, 195 (1976)]. The goal of the present study is to verify the current knowledge of prompt neutron multiplicity fluctuations and to study correlations with fission fragment properties.

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Fisson neutrons

Zamyatnin¹,

Konovalov²

Low Energy Neutrons and Their Interaction With Nuclei and Matter. Part 1

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Simultaneous investigation of fission fragments and neutrons in 252Cf (SF)

Cited by 206 publications

References 17 publications

Fission cross-sections, prompt fission neutron and γ-ray emission in request for nuclear applications

Fission cross-sections, prompt fission neutron and γ-ray emission in request for nuclear applications

Investigating Prompt Fission Neutron Emission from²³⁵U(n,f) in the Resolved Resonance Region

Fisson neutrons

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Simultaneous investigation of fission fragments and neutrons in 252Cf (SF)

Cited by 206 publications

References 17 publications

Fission cross-sections, prompt fission neutron and γ-ray emission in request for nuclear applications

Fission cross-sections, prompt fission neutron and γ-ray emission in request for nuclear applications

Investigating Prompt Fission Neutron Emission from235U(n,f) in the Resolved Resonance Region

Fisson neutrons

Contact Info

Product

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Investigating Prompt Fission Neutron Emission from²³⁵U(n,f) in the Resolved Resonance Region