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L Lindborg

Publications and source records attributed to L Lindborg.

24 records · Page 2Linked to original sources

Intercomparison of Nordic therapy level exposure secondary standards for 60Co gamma radiation.

An intercomparison of therapy level exposure secondary standards from the Nordic countries was made at 60Co gamma radiation at the secondary standard dosimetry laboratory in Helsinki . One standard seemed to be in error by about one per cent and another was found to be unreliable. From the analysis it was concluded that inter-comparisons of secondary standards can be made with an overall uncertainty of about 0.2 per cent. This uncertainty is of the same size as the difference between primary standards, which may therefore play a role in the evaluation of differences between secondary exposure standards.

Cobalt Radioisotopes↗

Experimental limitations in microdosimetry measurements using the variance technique.

Microdosimetry measurements give information about the energy imparted to a volume of given size. With the most frequent method only data for object sizes above 0.2 micrograms are obtainable. Although restricted to the dose mean values, the variance technique can, however, be applied to objects sizes an order of magnitude less. In this report some limiting parameters for this technique are discussed and results down to about 20 nm in a 60Co gamma-ray beam are reported. the resulting data exceed earlier reported values at objects size below 0.1 microgram, but are in good agreement for larger object sizes.

Analysis of Variance↗