Abstract

A large King furnace is described for use in the measurement of relative oscillator strengths by the absorption method. Design criteria are discussed, and representative traces of absorption lines obtained with the Oxford low noise spectrometer are shown. The rms noise level given by the apparatus at a wavelength of 4427 Å and with a resolving power of λ/Δλ = 1.1 × 105, is 0.03% of the continuum, using an integration time of 16 sec per point.

© 1970 Optical Society of America

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