Rabid: An Integral Transport-Theory Code for Neutron Slowing Down in Slab Cells.

Neutron Resonance Theory for Nuclear Reactor Applications: Modern Theory and Practices.

“…Because of its safety implication, one fast reactor parameter of particular interest is the Doppler coefficient discussed earlier. The need for analyzing the Doppler effect measurements in the highly heterogeneous system provided the strong motivation for the development of the continuous energy approaches for treating the complex cells with many regions [63][64][65][66][67][68][69][70][71][72][73][74][75]. The presence of a large number of resonances and spatial regions lead to the more frequent use of the effective cross section concept in addition to the traditional resonance integral approach.…”

“…Physically, is equivalent to a 'negative' source impinging on the far surface of plate . The notations used here are consistent with those used by Olson [72] for treating the generalized cell with infinite slabs to be discussed in the next section. Thus, the collision probability can be construed as the net neutron current on the surfaces of region for neutrons originated from region 0, which, in turn, can be identified with the collision rate in that region in conjunction with the neutron source of unit strength from region 0.…”

Rod and Plate Heterogeneity Studies in ZPPR-2

“…This procedure is inappropriate for a foil of a strong-resonance-absorber material positioned between the plates of the cell. One test case was made, comparing experimental 238 U capture rates with an ultrafine-group integral transport code, RABID, 15 and with S n transport-theory calculations. The CALHET calculations use ENDF/B Version-I data, and the RABID and S n calculations use ENDF/B Version II (modified).…”

“…The RABID integral-transport code 15 provides a rigorous treatment of the reaction rate of a resonant material in a plate cell within the limitations of its description by a one-dimensional slab geometry. It is, however, timeconsuming and expensive and has been used in the proof-testing sense, not as a code for routine generation of reaction-rate distributions.…”

“…10) 13.7.1 Foil/Fission Chamber Comparisons in the Plate Core (Sec. 10.1) (15) In the axial direction, streaming is present in the counter technique. This invalidates these measurements in the axial blanket but not in the core.…”