A system (100) for injecting particulate (110) matter into a reaction vessel is disclosed. An electromagnetic injector includes a first rail electrode (122), a second rail electrode (124), and an acceleration chamber (126) having sidewalls formed at least in part by the first and second rail electrodes. An injectable capsule (110) is configured to be loaded in the acceleration chamber (126) of the electromagnetic injector so as to be disposed between the first and second rail electrodes (122, 124). The injectable capsule (110) includes a conductive portion arranged so as to convey electrical current between the first rail electrode and the second rail electrode while the injectable capsule is loaded. An electric potential is applied between the first rail electrode (122) and the second rail electrode (124) such that current flows from the first rail electrode to the second electrode, and through the conductive portion of the injectable capsule (110), thereby causing the injectable capsule (110) to accelerate within the acceleration chamber.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with government support under DE-SC000675 awarded by the Department of Energy. The government has certain rights in the invention.