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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
Senate EPW Committee to hold Nieh nomination hearing
Nieh
The Senate Environment and Public Works Committee will hold a nomination hearing Wednesday for Ho Nieh, President Donald Trump’s nominee to serve as commission at the Nuclear Regulatory Commission.
Trump nominated Nieh on July 30 to serve as NRC commissioner the remainder of a term that will expire June 30, 2029, as Nuclear NewsWire previously reported.
Nieh has been vice president of regulatory affairs at Southern Nuclear since 2021, though since June 2024 he has been at the Institute of Nuclear Power Operations as a loaned executive.
A return to the NRC: If confirmed by the Senate, Nieh would be returning to the NRC after three previous stints totaling nearly 20 years.
Jincan Zhang, Lei Cao, Min Liu, Bo Liu, Lin Cheng
Nuclear Science and Engineering | Volume 195 | Number 2 | February 2021 | Pages 173-184
Technical Paper | doi.org/10.1080/00295639.2020.1798679
Articles are hosted by Taylor and Francis Online.
The gamma irradiation effect in indium phosphide (InP) heterojunction bipolar transistors (HBTs) is studied in this paper. The direct-current (DC) and alternating-current (AC) characteristics are investigated before and after an irradiation dose of 10 Mrad(Si). The main effects of gamma irradiation for InP HBTs are the following: increase of forward Gummel base current at low bias regime, decrease of common emitter collector current, increase of junction capacitances, and decrease of cutoff frequency. The Keysight model is adopted to describe behaviors of InP HBTs including DC and AC behaviors. The Keysight model parameter values are extracted before and after irradiation, in turn to study the physical mechanisms responsible for irradiation-induced degradation in InP HBTs.
