Directed Neutron Beams From Inverse Kinematic Reactions

Kinematic focusing of an emitted fairly mono‐energetic neutron beam by the use of inverse‐kinematic reactions, i.e. where the projectile mass is greater than the target atom’s mass, can provide for the utilization of a significant fraction of the fast neutron yield and also provide for a safer radiation environment. We examine the merit of various neutron production reactions and consider the practicalities of producing the primary beam using the suitable accelerator technologies. Preliminary progress at the NSWC‐Carderock Positive Ion Accelerator Facility is described. Possible important applications for this type of neutron‐based system can be both advanced medical imaging techniques and active “stand‐off” interrogation of contraband items.