Fission product yield data for the transmutation of minor actinide nuclear waste

A Coordinated Research Project of the IAEA Nuclear Data Section

CHOICE OF FISSIONING SYSTEMS FOR FISSION YIELD BENCHMARK EXERCISES: SPECIFICATIONS

Part A: Only fissioning systems (combination of target, projectile and incident energy) were selected for which measurements exist. The most extensive set of data was available for neutron-induced ²³⁸U fission; some other fissioning systems were also chosen for comparison.

Fissioning systems included in the benchmark exercise were as follows:

²³³U , ²³⁷Np, ²⁴⁵Cm + thermal neutrons
²³³U + n at 1 MeV
²³⁸U + n at 1.6 - 2.0, 5.5, 8, 10 - 11, 13, 14 - 15, 21, 27 - 28, 50, 100, 160 MeV
²³⁸U + p at 20, 60 MeV
²³⁷Np + n at 5.0, 5.5, 16.5 MeV
²³⁹Pu + n at 0.17, 7.9, 14.5 MeV
²⁴²Pu + n at 15.1 MeV.

Part B: Predictions for fissioning systems with no experimental data.

Fissioning systems included in the benchmark exercise were as follows:

²³⁷Np, ²⁴¹Am, ²⁴⁴Cm + n at 13, 27 - 28, 50, 100, 160 MeV

Pre- and post-neutron-emission mass distributions should be calculated for all fissioning systems.

Several of the model calculations were only performed for selected sets of fissioning systems:

Liu:

only Part A: for ²³⁸U + n, and post-neutron emission only.

Kibkalo:

only Part A: for ²³⁸U + n (pre- and post-neutron emission) only.

Katakura:

Parts A and B: for neutron-induced fission, post-neutron emission (all targets) only.

Zhdanov :

Parts A and B: from 5.5 MeV upwards (all targets and projectiles).

Wahl:

Parts A and B: all fissioning systems.

Dujvestijn:

Parts A and B: all fissioning systems

	ALICE-91: 8-160 MeV;
	TALYS: 1-28 MeV (loses validity above about 30 MeV);
	ALICE-91 and TALYS are coupled to the modified Brosa model.