The 2³S Excitation in Helium

SYMMETRIC BANACH ALGEBRAS OF OPERATORS IN A SPACE OF TYPE Π1

“…The original apparatus consisted of two coaxial cylinders (Maier-Leibnitz 1935). More recently cylindrical boxes (figure l), first used by L W Kerr (Kerr 1950, Higginson andKerr 1961), have also been employed (cf, Martin 1977). Only the latter will be considered here.…”