Mr. Garrison to General Nichols

ANALYSIS OF ACTIVATION MEASUREMENTS OF Th$sup 232$ RESONANCE CAPTURES IN THE PEACH BOTTOM (40-MW(E) PROTOTYPE HTGR) CRITICAL ASSEMBLY

“…5 ev, an unshielded reactor spectrum, or a cadmium-shielded reactor spectrum, and can be expressed in terms of either energy, E, or lethargy, u, as an independent * Aj.gg is specifically defined in Eq. (16).…”