31. There are lots of small neutron sources . 32. Such low-power reactors would be relatively safe to use as neutron sources for radiation therapy in hospitals. 33. Workshop Cold Neutron Sources , 1990 ), 559-63. 34. It drives the spallation neutron source complex. 35. Nevertheless, the fusor has since become a practical neutron source and is produced commercially for this role. 36. This reactor served in particular as neutron source for fundamental research, not for the investigation of nuclear energy. 37. He became a leader in establishing and building centers which used nuclear reactors as neutron sources for research. 38. He oversaw LANL's participation in the Joint Genome Institute and in the construction of the Spallation Neutron Source . 39. The internal neutron initiators were later phased out and replaced with pulsed neutron sources , and with boosted fission weapons. 40. Its current applications include a neutron source and an agent for radiation therapy targeting cancer cells in the body.