CYLINDRICAL IEC FUSION NEUTRON SOURCE FOR BROAD AREA NAA
The development of a unique long cylindrical neutron source for broad area neutron activation analysis (NAA) is presented. This source uses inertial electrostatic confinement (IEC) to produce 2.54 MeV D-D or 14.1 MeV D-T fusion neutrons for applications ranging from security inspection stations to driven-subcritical research assemblies. This design uses a biased grid to initial in a unique star mode plasma discharge forming beam-background gas (target) fusion. In spherical geometry it routinely produces ~10 8 2.54-MeV D-D fusion neutrons/s at steady-state. Pulsed operation has achieved up to 10 9 neutrons/sec. (equivalent to 10 11 n/s using D-T fill). Indeed, a version of the spherical IEC has been produced commercially as a portable neutron source for industrial NAA applications. Recently a cylindrical (2-dimensional version) design based on the spherical unit has been developed. This provides a unique long “line-like neutron source for use in broad area NAA. This IEC forms ion beams in the volume between the grounded wall and the concentric cylindrical grid. Those beams converge in the center, much like in the star mode spherical IEC. To date, neutron yields of up to 10 8 D-D neutrons/sec have been achieved with the cylindrical device. A sealed-off unit using getters for gas storage-control has been developed to simplify use in practical applications such as a luggage inspection station. Such units would be filled with deuterium at a central fueling facility, and sent out to the field. After extended operation, they would be returned to this facility for refilling.
George H.Miley Paul Keutelian Hiromu Momota Hugo Leon Ben Ulmen Guilherme Amadio Atanu Khan George Chen William Matisiak Ali Azeem
University of Illinois Urbana, Illinois, USA University of Illinois Urbana, Illinois USA
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-7
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）