The effect of prolonged X-ray irradiation on lithium tetraborate glass discs as used in X.R.F. analyses

Details The effect of prolonged X-ray irradiation on lithium tetraborate glass discs as used in X.R.F. analyses The effect of prolonged X-ray irradiation on lithium tetraborate glass discs as used in X.R.F. analyses

Mar 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973gecoa..37..708l&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 37, Issue 3, pp.708-710

Physics

Scientific paper

Prolonged irradiation by X-rays of lithium tetraborate glass discs causes significant changes in countrates for certain elements e.g. Na and Mg decrease while Al, Si and P increase. This effect is probably due to surface diffusion in the glass as grinding away about 10 m of the surface of the disc restores the countrates to their original levels. Although no change in countrates will ever be noticed on individual glass discs undergoing routine analyses, where irradiation time is only a minute or so, a close watch must be kept on any specimens that have been irradiated for more than a few tens of hours.

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