Filing a petition for a writ of certiorari to the U.S. Supreme Court does not automatically stay the mandate. Nonetheless, certiorari petitions are a common basis for asking an appellate court to issue a stay. Rule 41 expressly contemplates such motions.
The Fire Triangle. Three things are required in proper combination before ignition and combustion can take place---Heat, Oxygen and Fuel. There must be Fuel to burn. There must be Air to supply oxygen. There must be Heat (ignition temperature) to start and continue the combustion process.
The fuel used is a low-density hydrogen plasma. To ignite the fusion fire the plasma has to be confined in magnetic fields and heated to a high temperature. In the core 100 million degrees is attained. Tungsten is a highly promising metal as material for components coming into direct contact with the hot plasma.