Exercise 9:
GROUPR Thermal Quantities

Compute the Maxwellian-averaged thermal cross sections and resonance integrals for U-235 from ENDF/B-V using GROUPR and compare the results to the one from BROADR.

Hint: Start with Exercise 5, and then do two GROUPR runs, one with IWT=4 set to represent a 0.0253-eV Maxwellian up to several eV, and one with IWT=3 for the resonance integrals. You only have to run fission and capture MT values. Use 0.5 eV to 10 MeV for the resonance integrals.


27 March 2000 T-2 Nuclear Information Service ryxm@lanl.gov