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Fusion Science and Technology
Latest News
The RAIN scale: A good intention that falls short
Radiation protection specialists agree that clear communication of radiation risks remains a vexing challenge that cannot be solved solely by finding new ways to convey technical information.
Earlier this year, an article in Nuclear News described a new radiation risk communication tool, known as the Radiation Index, or, RAIN (“Let it RAIN: A new approach to radiation communication,” NN, Jan. 2025, p. 36). The authors of the article created the RAIN scale to improve radiation risk communication to the general public who are not well-versed in important aspects of radiation exposures, including radiation dose quantities, units, and values; associated health consequences; and the benefits derived from radiation exposures.
Yasushi Yamamoto, Kazuyuki Noborio, Satoshi Konishi
Fusion Science and Technology | Volume 47 | Number 4 | May 2005 | Pages 1285-1289
Technical Paper | Fusion Energy - Nonelectric Applications | doi.org/10.13182/FST05-A866
Articles are hosted by Taylor and Francis Online.
We have been developing a 1-D PIC simulation code for the spherical IECF, which includes atomic processes between energetic particles and background gases. In this paper, the electrode spacing effects on the neutron production rate (NPR) are investigated using this code by changing the cathode radius while keeping anode radius constant (17cm). Applied voltage (-90 kV) and ion injection current (50mA) are fixed with a deuterium pressure of 0.13 Pa, where the IECF discharge is not self-sustaining discharge and is in the ion injection mode.It is found that (1) the discharge voltage is not affected by the electrode spacing, (2) the neutron production rate increases with the increase of the cathode radius, and (3) the maximum obtained NPR with cathode radius of 10cm is about twice of that with the 3cm cathode.
