On Wed, 10 Oct 2007, Jim Pflugrath wrote:
It has come to my attention that the wavelength of a Copper Kalpha may have changed over the years. At least this appears to be true if you look at the International Tables.
the 'natural' isotopic distribution must have changed, as it has with the biggest example lithium, since the 'nuclear age' - i take that to be the principal reason.
and i take it that everyday-use copper anodes are isotopically impure? -bryan
