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Remembering Joseph M. Hendrie
Joseph M. Hendrie
To those of us who knew Joe, even prior to his appointment as chair of the Nuclear Regulatory Commission, it is an understatement to say that he was a larger-than-life member of the nuclear science and technology enterprise. He was best known to the broader community for two major accomplishments: the design and construction of the High Flux Beam Reactor (HFBR) at Brookhaven National Laboratory and the creation of the standard review plan (SRP) for the U.S. Atomic Energy Commission.
In addition to the products of these endeavors becoming major fundaments to their respective communities, they were uniquely Joe. The safety analysis report for the HFBR was written essentially single-handedly by him. This was true of the SRP as well, which became the key safety review document for the NRC as it performed safety reviews for the growing number of power reactor applications in the United States. His deep technical knowledge of nuclear engineering and his extraordinary management skills made this possible.
M. Wisse, L. Marot, R. Steiner, D. Mathys, A. Stumpp, M. Joanny, J. M. Travère, E. Meyer
Fusion Science and Technology | Volume 66 | Number 2 | October 2014 | Pages 308-314
Technical Paper | doi.org/10.13182/FST13-771
Articles are hosted by Taylor and Francis Online.
In order to extend the investigation of laser-assisted cleaning of ITER-relevant first mirror materials to the picosecond regime, a commercial laser system delivering 10-ps pulses at 355 nm at a frequency of up to 1 MHz has been used to investigate the ablation of mixed aluminum (oxide)/tungsten (oxide) layers deposited on polycrystalline and nanocrystalline molybdenum as well as nanocrystalline rhodium mirrors. Characterization before and after cleaning using scanning electron microscopy and spectrophotometry shows heavy dust formation, resulting in a degradation of the reflectivity. Cleaning using 5-ns pulses at 350 and 532 nm, on the other hand, proved very promising. The structure of the film remnants suggests that in this case buckling was the underlying removal mechanism rather than ablation. Repeated coating and cleaning using nanosecond pulses is demonstrated.