Oscillator strengths of the resonance lines of some rare gases

Abstract

The oscillator strengths of several resonance lines of He, Ne, Ar and Kr in the wavelength range between 522 Å and 1165 Å have been determined by measuring the self-absorption of the radiation as a function of the gas pressure at low pressures. The self-absorption of the radiation of the 1 1S-2 1P line of He is used as a reference. An absorbing pathlength of 2.8 cm and pressures in the range from 5 x 10 −6 to 10 −3 torr were used. The obtained values of the oscillator strengths of the resonance lines are: 2 helium 3 1P-1 1S ( 537 Å) f = 0.076 ± 0.004, helium 4 1P-1 1S ( 522 Å) f = 0.029 ± 0.002, neon 1P 1- 1S 0 ( 736 Å) f = 0.134 ± 0.010, argon 1P 1- 1S 0 (1048 Å) f = 0.22 ± 0.02, krypton 1P 1- 1S 0 (1165 Å) f = 0.142 ± 0.015.