ID 17
Type G - General request
Target 96-Cm-244
Reaction (n,f)
Quantity prompt n - Prompt neutron production
Incident energy Eth - 10 MeV
Accuracy 10 %
Field(s) ADS
Subfield Fast fission spectra
Accepted date 10-Sep-2008
Status Work in progress
Latest review date 28-Apr-2022


Mr Toshinobu SASA at JAEA, JPN

Project (context)



It is necessary in the ADS design study. Obninsk scientists report important difference of fission neutron spectra from ENDF/B-VI evaluation at MeV energies.

Justification document

T. Sugawara, K. Sugino, T. Sasa, "SND2006-V.10: Design of MA-loaded Core Experiments using J-PARC", T. Fukahori (Ed.), Proc. of 2006 Symposium on Nuclear Data, Jan. 25-26, 2007, RICOTTI, Tokai-mura, Ibaraki-ken, Japan, ISBN978-4-89047-138-6, Nuclear Data Division, Atomic Energy Society of Japan (2007) [CD-ROM].

Review comment


It appears that experimental work for the neutron-induced reaction will be near to impossible on account of the required amount of sample material. Could this work be carried out by using a transfer reaction?

The importance of the fission neutron spectrum is not contested. It is a significant problem also for the major actinides and for those it is a recurrent subject of debate. The present request is dubbed a general request since it is not backed by a direct sensitivity study. The methodology of such sensitivity studies was recently explored by WPEC Subgroup 26 ( International Evaluation Co-operation, Volume 26 ). In that report it is also mentioned that substantial uncertainties may result from the fission spectrum but that further work is required.


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

Additional file(s)

  1. sugawara t(MA-cores JPARC) - 458.25 KB PDF