No, however to get more Alien weapons you may purchase the 'Mothership Zeta' DLC.
Not enough, friend, Not enough. Alien atomizer Alien disintegrator Drone cannon Shock baton and the coveted alien blaster.
from the crashed alien ship next to the dead alien
The only ammo you get is where you get the Alien Blaster. But apparently there is more ammo near a truck where a Mr. Handy is. Hope that helps. :)
After you complete Mothership Zeta and return to the Wasteland, you will find the blaster in the exact place where it was before. If you fast travel to The site and keep walk past all the crap left over and you should see a dead alien with a Blaster and ammo
alien blaster but ammo is hard to find after you have it all and its at the alien crash site
you go to the alien blaster location and jump on the alien space ship
The normal alien blaster is at the site of the alien space craft. There is a grid of power lines west of minefield. follow them north until you get the alien radio signal, i forget what it is called. Then go off to the right a little bit and you'll find the space craft and the alien blaster, along with about 110 ammo for it. The fire lance alien blaster will be found at a random location selected by the game. I was lucky enough to get mine at the super duper mart. The radio signal is called Recon Craft Thefta Or, North of Minefield
math blaster
if its the alien blaster you want, its easy to find. watch this youtube video. http://www.youtube.com/watch?v=oTdu5ABpSEE
You must have the WILD WASTELAND PERK and go to tumbleweed ranch and around where you would normally find the rare gauss rifle you will find aliens in which you must kill to receive the Alien Blaster
you can not find any energy cells in Fallout 3 after you find the ones with the alien blaster, you are limited to that number
what is the special powers of an alien