The oscillator strengths of the 1S0−1P1 (1165Å) and the 1S0−3P1, (1236 Å) resonance transitions in krypton and the 1S0−1P1 (1296 Å) resonance transition in xenon were determined by the method of total absorption. A 2-m absorbing path and pressures in the range of 0.006–0.064 torr were used. The results were
Kr: 1S0−1P1 (1165 Å) f=0.193±0.009 (39 determinations)
Kr: 1S0−3P1 (1236 Å) f=0.187±0.006 (49 determinations)
Xe: 1S0−1P1 (1296 Å) f=0.194±0.005 (35 determinations).
P. M. GRIFFIN and J. W. HUTCHERSON, "Oscillator Strengths of the Resonance Lines of Krypton and Xenon," J. Opt. Soc. Am. 59, 1607-1613 (1969)