NEA Nuclear Data High Priority Request List, HPRL

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High Priority Requests (HPR)

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Special Purpose Quantities (SPQ)

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EG-HPRL
(SG-C)

Standard

Dosimetry



Request ID88 Type of the request Special Purpose Quantity
TargetReaction and processIncident EnergySecondary energy or angleTarget uncertaintyCovariance
 41-NB-93 (n,xn) x=2-4 SIG  15MeV/Thr.-100 MeV  5-10 Y
FieldSubfieldCreated dateAccepted dateOngoing actionArchived Date
 Dosimetry High-energy 06-OCT-17 06-OCT-17 

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Requester: Dr Stanislav SIMAKOV at KIT, GER
Email: intersurfen@gmail.com

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:
5%-10%

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].

Comment from requester:
The IRDFF project strives to evaluate, and eventually add to the library, high-threshold reactions with cross section plateaus located between 15/20 MeV and 100/150 MeV to meet the requirements of the accelerator-driven high-energy neutron sources. Note that it is important to know the cross section tail up to 100/150 MeV in order to allow the deconvolution of high-energy quasi-monoenergetic neutron source spectra.
The present request concerns the following reactions:
Nb-93(n,2n)Nb-92m
Nb-93(n,3n)Nb-91m
Nb-93(n,4n)Nb-90

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.

Additional file attached: Simakov2017.pdf
Additional file attached: Nb(n,xn).pdf

Review comment:

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. Majerle, P. Bem, et al., Au, Bi, Co and Nb cross-section measured by quasimonoenergetic neutrons from p+7Li reaction in the energy range of 18-36 MeV, Nuclear Physics A 953 (2016) 139

Theory/Evaluation