On Jul 27, 5:41 pm, Radium wrote:
Hi:

Is it theoretically-possible to facilitate hydrogen-hydrogen fusion
within the earth's troposphere using a laser? If so, what would be the
maximum wavelength [or minimum frequency] and minimum intensity of
laser light required for this? Also what would be the minimum
thickness of the laser beam necessary for this application?

No. Are you a troll or did you not bother hitting wikipedia for
nuclear fusion.

Almost all hydrogen on earth is protium, with some small percentage
being deuterium... so you're trying to do p-p fusion which is weak
force mediated... you have to overcome columb repulsion at the exact
same time there is a weak mediated inverse beta decay to a neutron,
positron, and electron neutrino. Thats how the sun shines, and the
reason its so slow and hard to do is the reason its still shining
rather than burning up billions of years ago.

This ignores a little problem with nuclear fusion called confinement
or the Lawson criterion.

http://en.wikipedia.org/wiki/Lawson_criterion

The application of this nuclear fusion is not generation of power but
rather to produce a spectacular light show in the night sky -- using
the minimum light intensity, maximum wavelength, and minimum beam
thickness required.

Better luck just building H-bombs, deuterium-deuterium wet Ivy Mike
things or deuterium/tritium for something you can launch on a plane.