Abstract

A transition probability of 7.6×10⁶ sec⁻¹ for the ³p ⁵P–4d ⁵D° multiplet of O i at 6157 A was measured in a wall-stabilized high-current arc operating in an atmosphere of oxygen containing a trace of hydrogen. Electron densities were obtained from H_β line-profile measurements, and upper-level populations were calculated as a function of electron density by assuming local thermodynamic equilibrium. The method minimizes the turbulence and “demixing” problems associated with earlier measurements. Special attention was given to the accurate determination of the background of the spectral lines.

© 1961 Optical Society of America

Radiative-lifetime measurements of the 4p⁵P, 4p³P, and 4d⁵D^∘ multiplets of O i

R. L. Day, R. J. Anderson, and G. J. Salamo
J. Opt. Soc. Am. 71(7) 851-855 (1981)

Atomic Transition Probabilities: Ultraviolet Multiplets of Zn i,ii and Cd i,ii*

Scott R. Baumann and William Hayden Smith
J. Opt. Soc. Am. 60(3) 345-347 (1970)

Transition Probabilities for Prominent Ar i Lines in the Near Infrared*

W. L. Wiese, J. M. Bridges, R. L. Kornblith, and D. E. Kelleher
J. Opt. Soc. Am. 59(9) 1206-1212 (1969)

Experimental Transition Probabilities for Neon i*

Roger D. Bengtson and Myron H. Miller
J. Opt. Soc. Am. 60(8) 1093-1096 (1970)

Arc Measurement of Some Ar ii Optical Transition Probabilities

J. B. Shumaker and C. H. Popenoe
J. Opt. Soc. Am. 59(8) 980-985 (1969)