On Wed, Dec 4, 2013 at 11:36 AM, <[email protected]> wrote: Surely that depends on the distribution of the radioisotope within the > metal? > Since you created this hypothetical substance, it's up to you to say > whether or > not that's the case. ;) >
No doubt. :) But for my hypothetical substance, I will choose a realistic substance -- an ampule of ordinary cesium (pure but not enriched in any way). How do we know that any of the gammas emitted by an ampule originate from within the bulk of the cesium rather than being limited to the surface? Eric
