Good post, Sabiang....most folks ARE unaware that antimatter storage is well developed as you pointed out .....and these references give some good background ...
Positrons are regularly used in medical PET scans (Positron Emission Tomography) and the like.

BTW, also not so well known is the fact that the Pentagon in the 1980's was interested in developing antibeam weapons, especially space based ..and even antimatter bombs which had the perceived advantage of small size and being 'clean' .....you don't hear much about it today because of the 'political correctness' stuff...but it is still going on.


Also, it may interest you that the largest known antimatter 'beam' is actually spueing out from (close to) the galactic center and evidenced by a large cloud of antimatter (gamma spectrum) about 10,000 L.Y. across around the galactic center. Only recently has its apparent source been tied to x-ray binaries that cluster in that vicinity.....
http://www.nasa.gov/centers/goddard/...er_binary.html

G^2
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