Samuel Cornette Collins ( September 28 , 1898 in Kentucky – June 19 , 1984 in Washington , DC . ) was an American physicist . He developed the first mass-produced helium liquefier , Collins Helium Cryostat , acquiring the title " Father of Practical Helium Liquefiers . " Collin 's refrigerators , powered by a two-piston expansion engine , provided the first reliable supplies of liquid helium in quantities of several hundred to several thousand liters . Among other uses , these refrigerators were used to liquefy and transport helium and deuterium for the first hydrogen bomb explosion , Ivy Mike in 1952
Ivy Mike
Ivy Mike
Samuel Collins (physicist)