This man hypothesized a primordial material he termed "ylem."  
This man hypothesized a primordial material he termed "ylem."  The optimum bombarding energy is closely related to the peak of his namesake window for tunneling through a Coulomb barrier.  He wrote a series of books in which a bank clerk hunts a very uncertain quantum tiger and rides a bike in a city where the speed of light is a few kilometers per hour.  In addition to writing the Mr. Tompkins books, he predicted the cosmic microwave background and proposed the idea of a genetic code.  For 10 points, name this man who worked on hot Big Bang nucleosynthesis with Alpher and added Bethe's name to the resulting paper.
This man hypothesized a primordial material he termed "ylem."  
George or Georgiy Antonovich Gamow [or Gamov]