Study of the 9Be(α,nγ)12C Reaction for the High Temperature Plasma Diagnostics

A review of high resolution gamma- spectroscopy applied to Be-9(alpha, n gamma)C-12 reaction with the aim of hot plasma diagnostic is presented. In this review a historic genesis of the concept, a brief overview of relevant theory, different approaches and essential effects are discussed. Abilities to extract information on fast alpha- particles distribution function are demonstrated. Developed technique was applied for analysis of the largest in the world tokamak JET data.