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OCaptain Wrote:
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> Thanks, Ori.
>
> You forgot one of my questions:
>
> "So, about your first comment above: with which
> particular equipment do you have experience? "
>
>
> Thank you.
Most of my experience is with scintillography hardware which specifically detect the decay events. Meanwhile, accelerator mass spectrometers (AMS) can see all the C14, not just the ones that decay, which is why far smaller samples can be analyzed like those taken from Campbell's Chamber by the German team.
Regardless of the equipment used, the dating process looks at the ratio of C14 to total carbon (ie., including stable C12 which constitutes the vast majority of carbon in any sample). However, the introduction of modern carbon with its fresh crop of C14 will significantly throw off the date of the sample, especially in very old original samples which have only a tiny complement of C14 remaining, and especially in heated clumps of charcoal that may have an enhanced affinity to adsorb modern particulate matter (ie, "activated") from the ambient environment.
Edited 1 time(s). Last edit at 14-Jul-16 21:03 by Origyptian.
-------------------------------------------------------
> Thanks, Ori.
>
> You forgot one of my questions:
>
> "So, about your first comment above: with which
> particular equipment do you have experience? "
>
>
> Thank you.
Most of my experience is with scintillography hardware which specifically detect the decay events. Meanwhile, accelerator mass spectrometers (AMS) can see all the C14, not just the ones that decay, which is why far smaller samples can be analyzed like those taken from Campbell's Chamber by the German team.
Regardless of the equipment used, the dating process looks at the ratio of C14 to total carbon (ie., including stable C12 which constitutes the vast majority of carbon in any sample). However, the introduction of modern carbon with its fresh crop of C14 will significantly throw off the date of the sample, especially in very old original samples which have only a tiny complement of C14 remaining, and especially in heated clumps of charcoal that may have an enhanced affinity to adsorb modern particulate matter (ie, "activated") from the ambient environment.
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How can any of us ever know, when all we can do is think?
How can any of us ever know, when all we can do is think?
Edited 1 time(s). Last edit at 14-Jul-16 21:03 by Origyptian.
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