Determination of Degradation Constants of Energetic ^7*Li Ion in Liquid Media Using a Thin Boron Film on Silicon Wafer

Abstract

A novel method to determine degradation constants has been developed for energetic ^7*Li ions produced from the ¹⁰B (n, α) ^7*Li reaction, moving in liquid media. The energetic ^7*Li generated in a thin boron film on silicon wafer plunged into a liquid sample in which the wafer was immersed. The degradation constants were determined by analyzing the Doppler-broadened lineshapes of prompt γ-ray at 478 keV emitted from ^7*Li. For comparison, degradation constants were also measured for solutions of boron compounds. Values obtained by the two methods gave fair agreement.