11-Na-23(n,2n)
| ID |
69
|
| Type |
|
| Target |
11-Na-23
|
| Reaction |
(n,2n)
|
| Quantity |
SIG/SPA - Cross section averaged over an incident particle energy spectrum
|
| Incident energy |
252Cf(sf) - 235U(n,f)
|
| Accuracy |
2-5 %
|
| Field(s) |
Dosimetry
|
| Subfield |
D-T fusion
|
| Accepted date |
06-Oct-2017
|
| Status |
Work in progress
|
| Latest review date |
22-Apr-2022
|
Requester
Dr Stanislav SIMAKOV at KIT, GER
Project (context)
IRDFF project
Impact
The International Reactor Dosimetry and Fusion File (IRDFF) aims at providing evaluated neutron dosimetry reactions validated for all applications related to fission reactors and fusion technology development [IAEA2017].
Accuracy
2%-5%
Justification document
Accurate cross sections as well as spectrum-averaged cross sections (SACS) in relevant and well-characterized neutron fields are essential for improvement and validation of the evaluated data [Simakov2017].
Following a recommendation from the IAEA Data Development Project on Neutron Standards [Pronyaev2013], the IRDFF project supports SACS measurements of high-threshold (above 10 MeV) dosimetry cross-sections in well-characterized 252Cf(sf) and 235U(nth,f) neutron fields in order to improve the cross sections and/or the high-energy part of the prompt fission neutron spectra.
Comment from requester
Measurements of the spectrum-averaged cross section are missing for validation purposes and for improvement of the cross section and prompt fission neutron spectrum above 10 MeV. See Cf252U235_HighThreshold.pdf below.
References
- [IAEA2017] IAEA CRP on Testing and Improving the International Reactor Dosimetry and Fusion File (IRDFF),
http://www-nds.iaea.org/IRDFFtest/.
- [Simakov2017] S. Simakov, et al., “Proposals for new measurements for IRDFF community and HPRL”, September 2017.
- [Pronyaev2013] V.G. Pronyaev, A.D. Carlson and R. Capote Noy, “Toward a New Evaluation of Neutron Standards”, IAEA Technical Meeting, 8-12 July 2013, INDC(NDS)-0641.
Entry status
Work in progress (as of SG-C review of May 2018)
Main recent references
Please report any missing information to hprlinfo@oecd-nea.org
Experiments
- M. Schulc, M. Kostal, et al., Validation of differential cross sections by means of 252Cf spectral averaged cross sections, Applied Radiation and Isotopes 132 (2018) 29
- M. Schulc, et al., Investigation of 127I(n,2n)126I and 23Na(n,2n)22Na reactions using 252Cf neutron source, ASME J of Nuclear Rad Sci. 5 (2019) 030918
- M. Kostal, et al., A reference neutron field for measurement of spectrum averaged cross sections, Annals of Nuclear Energy 140 (2020) 107119
Theory/Evaluation
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