Brandenburg got his BA in Physics from Southern Oregon University in Ashland, Oregon, his MS in Applied Science at University of California at Davis and his Ph.D. in Theoretical Plasma Physics at the UC Davis extension campus at Lawrence Livermore National Laboratory in Livermore, California. The title of his thesis was A Theoretical Model of a Reversed Field Ion Layer Made of Monoenergetic Ions. Its topic was magnetic confinement of plasmas for controlled nuclear fusion.
Brandenburg held positions in a variety of high-tech companies specializing in plasma physics: Mission Research Corporation, Sandia National Laboratories, Research Support Instruments (RSI), The Aerospace Corporation, Florida Space Institute, and Orbital Technologies in Madison, Wisconsin. His work encompassed studies of the microwave electrothermal plasma thruster for space propulsion, rocket plume-regolith interactions on the Moon and Mars, vortex theory of rocket engine design, and Kaluza-Klein theory of field unification for purposes of space propulsion. As of 2015 he was situated at Morningstar Applied Physics in Vienna, Virginia (no relationship to the error-prone psychologist Robert Morningstar.) He is a part-time instructor of Astronomy, Physics and Mathematics at Madison College, Wisconsin.
Quoting: [link to rationalwiki.org (secure)]



Later, he proposed that the elevated ratio of 129Xenon to 132Xenon in the atmosphere of Mars could only be explained as the after signature of a nuclear weapon



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The only other explanation is a solar event such as a CME/ flare or something stronger. I don’t think Mars ever had life based on geological evidence. The distribution of isotopes suggests a bomb too big for it to be a created weapon, the sun or a comet like event would have the power and distribution to effect Mars so.