[2] Post was a winner of the James Clerk Maxwell Prize for Plasma Physics[3] and led the controlled thermonuclear research group at Lawrence Livermore National Laboratory for 23 years.

He held a total of 34 patents in the fields of nuclear fusion, particle accelerators, and electronic and mechanical energy storage.

[9] Post joined the staff at Lawrence Livermore National Laboratory (LLNL) as leader of the controlled thermonuclear research group until 1974.

[2] He worked with Marshall Rosenbluth to develop the stability of plasma inside mirror machines.

[5] He has held advisory roles at NASA, the National Academy of Sciences and the United States Air Force.