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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 A and with a resolving power of(More)
A two-channel scanning spectrophotometer is described which has been used, in conjunction with a high resolution grating spectrograph, to make measurements of collision broadening and shift in optical absorption spectra to an accuracy of 0.001 cm(-1). Shifts with respect to a reference spectrum are measured directly from the chart of a two-pen recorder,(More)
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