In reply to Axil Axil's message of Wed, 18 Jun 2014 16:07:49 -0400: Hi, >http://phys.org/news/2014-06-quantum-mechanism-trigger-emission-tunable.html
"In the paper, which is published in Physical Review B, the researchers predict that by shining light on a 2D asymmetric nanostructure with a laser that is tuned at resonance with the electronic transitions that can occur in the nanostructure Read more at: http://phys.org/news/2014-06-quantum-mechanism-trigger-emission-tunable.html#jCp" ...however there are no electronic transitions that match gamma energies of several MeV. Though Uranium will absorb x-rays of 115 keV. [snip] Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html