so..." A physicist at Princeton University, Ryan Snyder, noted that the SILEX process could create an easy path towards a nuclear weapon due to the ability to reach a high level of uranium enrichment, that is difficult to detect..."...and..." a carrier gas to energy from a pulsed laser. The laser used is a CO2 laser operating at a wavelength of 10.8 μm (micrometres) and optically amplified to 16 μm, which is in the infrared spectrum. The amplification is achieved in a Raman conversion cell, a large vessel filled with high-pressure para-hydrogen...."