S. A. Edelstein

Organic vapor excitation by electron beam pumping of rare-gas—Organic vapor mixtures

Abstract Broad-band fluorescence at 4000 A has been observed from gas phase mixtures of the dyes POPOP and α-NPO in Xe and Ar. The photon yields have been measured at 3 atm total pressure and are found to reach the following maximum values: α-NPO/Xe: 2%, α-NPO/Ar: 5%, POPOP/Xe: 9%, POPOP/Ar: 20%.

Collisional Angular Momentum Mixing in Rydberg States of Sodium

Collisions with rare-gas atoms are observed to produce a lengthening of the lifetime of the highly excited (

Resonance‐ionization velocimeter

n=5\ensuremath{-}10

Doubly Excited Autoionizing Rydberg States of Sr

)

Collisional angular-momentum mixing of Rydberg states of Na by He, Ne, and Ar

d

Field ionization of highly excited states of sodium

states of Na. The effect is interpreted as collisional angular momentum mixing of the

Radiative lifetimes of theSandDRydberg levels of Na

d

Collisional angular momentum mixing of f states of Na

state with

Collisional angular-momentum mixing of highly excited Na(n /sup 2/D) states by N/sub 2/ and CO

lg2

Resolution of|ml|and|mj|Levels in the Electric Field Ionization of Highly ExciteddStates of Na

states; thus the average lifetime of all states for which