anti neutron particle weapons

supposedly a source i talked to said that back in the 60s
he worked on a secret weapon an anti-neutron particle beam. supposedly what it does is bombard the target and structually weaken the target structure. he said that the experiments worked and that the beam system took up an area about 20ft by15ft. i asked him about what he thought we were working on now and he told me that he did not want to think about it. remember this is in the 1960s.

If this weapon actually existed then the power needed to fire it would be astronomical as it takes almost �500 worth of eletricity to power an Argon Laser in the labs for one minute!

Who was your source? Does he/she have any proof?

I'm not a skeptic here, but something like that being built would scare the # out of god! Sorry!

Where are you from?
Do you work, or have authorisation to look at goverment documents? How did you hear about this in the first place?