00000nam 2200000zi 4500 9.869888 CaOODSP 20221107162955 m o d f cr nn||||||||| 190314t19691970oncad obt f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-on M38-1/211-1969E-PDF M38-1/211 Dalton, J. L., author. The determination of mass attenuation coefficients for titanium, vanadium, iron, nickel, copper, praseodymium, gadolinium, and erbium / J.L. Dalton, Mineral Sciences Division. Ottawa : Department of Energy, Mines and Resources, Mines Branch, November 1969. ©1970 1 online resource (v, 38 pages) : illustrations, charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier Research report ; R 211 Cover title. Digitized edition from print [produced by Natural Resources Canada]. "November 1969." Includes bibliographical references (page 32). "Mass attenuation coefficients have been determined for titanium, vanadium, iron, nickel, copper, praseodymium, gadolinium, and erbium. The coefficients for the transition elements were measured over the range 17 keV to 2 keV and the rare earth elements over the range 28 keV to 5 keV. The precision of the measurements -- that is, the calculated relative sample standard deviation for all the replications for a single coefficient -- was less than one per cent in some cases, Agreement of the standard deviation predicted by the law of propagation of error with that obtained by measurement was achieved in favourable cases. Absorbing foils that were not ideally uniform accounted for discrepancies between the predicted and the actual standard deviations that occurred. The accuracy of the measurements is judged to be in the range two to four per cent of the mass attenuation coefficient reported. A statistical analysis of the data yielded constants and exponents making possible the calculation of mass attenuation coefficients in several atomic number-energy regions"--Abstract, page i. Includes abstract in French. gccst Metals Mass attenuation coefficients Canada. Department of Energy, Mines and Resources. Canada. Mines Branch. Canada. Mineral Sciences Division. Research report (Canada. Mines Branch) R 211. (CaOODSP)9.855660 PDF 2.36 MB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-211-1969-eng.pdf