Lawson criterion for ignition exceeded in an inertial fusion experiment

For more than half a century, researchers around the world have been engaged in attempts to achieve fusion ignition as a proof of principle of various fusion concepts. Following the Lawson criterion, an ignited plasma is one where the fusion heating power is high enough to overcome all the physical processes that cool the fusion plasma, creating a positive thermodynamic feedback loop with rapidly increasing temperature. In inertially confined fusion, ignition is a state where the fusion plasma can begin "burn propagation" into surrounding cold fuel, enabling the possibility of high energy gain. While "scientific breakeven" (i.e., unity target gain) has not yet been achieved (here target gain is 0.72, 1.37 MJ of fusion for 1.92 MJ of laser energy), this Letter reports the first controlled fusion experiment, using laser indirect drive, on the National Ignition Facility to produce capsule gain (here 5.8) and reach ignition by nine different formulations of the Lawson criterion

Synchromy

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Synchromy No. 3

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Evolution of Writing

MacDonald's mosaic portrays scholars and written languages from neolithic times. It also includes inscriptions in Chinese characters, Phoenician letters, Babylonian cuneiforms, and Egyptian hieroglyphics.MacDonald's mosaic portrays scholars and written languages from neolithic times. It also includes inscriptions in Chinese characters, Phoenician letters, Babylonian cuneiforms, and Egyptian hieroglyphics

Synchromy in Blue

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The Entrance of the Gods into Valhalla

This asbestos fire curtain is located at the Santa Monica High School auditorium.This asbestos fire curtain is located at the Santa Monica High School auditorium

Synchromy

The abstract oil painting includes hues of red, blue, yellow, orange, brown, green and black