Evolution of the Cerenkov x total-energy telescope for isotopic analysis of cosmic rays

This paper discusses the evolution of the Cerenkov x totalenergy technique for isotopic analysis of cosmic rays as developed by the University of New Hampshire. This technique is generally restricted to particles with Z>6, and lthe best mass resolution is achieved over a relatively narrow energy range just above the Cerenkv threshold. State-of-the-art mass resolution is now 0.3-0.4 AMU through-out the charge range Z = 8-28 and over an energy range varying from approximately 40 MeV/nuc at lower Z to approximately 200 MeV/nuc for Fe. (author)