pub fn cross_sections_for_rml_range(
rml: &RmlData,
energy_ev: f64,
) -> (f64, f64, f64, f64)Expand description
Compute cross-section contributions from an LRF=7 energy range.
Returns (total, elastic, capture, fission) in barns.
Iterates over all spin groups (J,π), sums their contributions.
A single RmlWorkspace is allocated once and reused across spin groups.