³He(n,p)T -The Forgotten Standard

This presentation, ³He(n,p)T - The Forgotten Standard" by Allan D. Carlson, explores the historical development and evaluation of the ³He(n,p) cross section standards in neutron data measurements. It highlights the evolution from early ENDF/B standards to more refined evaluations, addressing challenges in measurement accuracy and consistency, especially above 50 keV. The presentation also discusses the R-matrix evaluation by Hale for ENDF/B-VI, the lack of recent measurements, and the relevance of the ³He(n,p) cross section standard in modern experiments, concluding with potential future research directions.