Nick Hull wrote:
How well researched is the He3 reactor idea?

After 50 years, you can say it's *well* researched :-)

Is there enough He3 on
earth to build a working He3 reactor?

Yes. To build 'a' reactor. And if it doesn't work you're in trouble :-)

Is the reactor laser activated?

No. Normal tokomak style reactor- you know, the one nobody can get to
work after 50 years of research- only He3 needs it hotter, which makes
it even more difficult...