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DOE issues new NEPA rule and procedures—and accelerates DOME reactor testing
Meeting a deadline set in President Trump’s May 23 executive order “Reforming Nuclear Reactor Testing at the Department of Energy,” the DOE on June 30 updated information on its National Environmental Policy Act (NEPA) rulemaking and implementation procedures and published on its website an interim final rule that rescinds existing regulations alongside new implementing procedures.
Masami Ohnishi, Osawa Hodaka, Tomoya Furukawa, Takashi Suma
Fusion Science and Technology | Volume 52 | Number 4 | November 2007 | Pages 1101-1104
Technical Paper | Nonelectric Applications | doi.org/10.13182/FST07-A1644
Articles are hosted by Taylor and Francis Online.
A neutron production rate (NPR) of 2.3 × 106 1/sec has been achieved in a spherically convergent D-D fusion neutron generator with the applied voltage 60 kV and the steady-state discharge current 40 mA. The scaling of NPR with respect to the current, however, is linear. The results revealed the fact that the fusion reaction occurs mainly between the accelerated molecular ion D2+ and neutral gas D20. In considering a future application of the neutron source, the dependence on a square current, i.e., the fact that the main reactions are caused by accelerated ion beam-beam colliding fusions is most desirable. A new IEC device has been constructed in order to obtain evidence of beam-beam colliding fusions. The device is designed to operate in a short pulse of the voltage -70 kV and the large current 100 A. This is the first experiment to draw a current of several tens of amperes in IEC devices. The discharge characteristics were studied with regard to the relations of the current, applied voltage and gas pressure. The neutron production rate was also measured, and the conditions to realize accelerated ion beam-beam fusion are discussed.