Can we use positron in SEM/TEM instead of electron?

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Vladimir Dusevich

Annihilation.

But there are some methods utilizing positron beam:

http://www.ne.ncsu.edu/nrp/ips.html

Bert Freitag

The brightness of the source will be too small to use the positrons for normal applications in SEM/TEM. Nevertheless it has been tried. See e.g.

http://scitation.aip.org/content/aip/journal/apl/71/15/10.1063/1.120451