Absolute Sphericity Measurement: a Comparative Study on the Use of Interferometry and a Shack-Hartmann Sensor

The uranium samples used had been previously analysed using traditional chemical dissolution and atomic absorption spectroscopy techniques. The values found for the aluminium and iron concentrations were used as the calibration standards. These standard concentrations, when planed against the observed specual line intensity ratio of aluminium:wanium and iron:uraniwn, yielded linear relationships with best fits o f f = 0.99 in both cases. Ihe error bars shown are the 95% confidence limits for both measurement methods. The precisiodlimit of detection for both iron and aluminium w-ere found to be 9ppm142ppm and 63pymi270ppm. respectively.