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Xenon-135 (135 Xe) is an unstable isotope of xenon with a half-life of about 9.2 hours. 135 Xe is a fission product of uranium and it is the most powerful known neutron-absorbing nuclear poison (2 million barns; [1] up to 3 million barns [1] under reactor conditions [2]), with a significant effect on nuclear reactor operation.
Radioactive isotope table "lists ALL radioactive nuclei with a half-life greater than 1000 years", incorporated in the list above. The NUBASE2020 evaluation of nuclear physics properties F.G. Kondev et al. 2021 Chinese Phys. C 45 030001. The PDF of this article lists the half-lives of all known radioactives nuclides.
Xenon-136 is an isotope of xenon that undergoes double beta decay to barium-136 with a very long half-life of 2.11 × 10 21 years, more than 10 orders of magnitude longer than the age of the universe ((13.799 ± 0.021) × 10 9 years). It is being used in the Enriched Xenon Observatory experiment to search for neutrinoless double beta decay.
The St. Louis Car Company "Doodlebug" was a model of lightweight, streamlined diesel-electric railcars built by the St. Louis Car Company in 1936 for the Seaboard Air Line Railroad. Electromotive Corporation supplied the 600 hp (450 kW), eight-cylinder Winton 8-201A prime mover and electric transmission components, though unit 2028 would be ...
The Virginian EL-C, later known as the New Haven EF-4 and E33, was an electric locomotive built for the Virginian Railway by General Electric in August 1955. They were the first successful production locomotives to use Ignitron (mercury arc) rectifier technology.
The required modifications took nine weeks per unit on average to complete. The rebuild work was done at the railroad's Uceta Shops near Tampa, Florida, with the engines, bogies and traction motors rebuilt at Waycross and Jacksonville. [2] The program resulted in a cost savings of almost 50% over buying new locomotives. Included in the program:
The order was the second part of Amtrak's company-wide fleet-replacement program, after an order for 130 Viewliner II passenger cars was placed in July 2010. On June 30, 2011, US Secretary of Transportation Ray LaHood announced that Amtrak had received a $562.9 million loan from the federal government's Railroad Rehabilitation and Improvement ...
This locomotive, classified by ALCO as model DL-701, was their first high-horsepower road switcher, [1] intended to be a replacement for the very popular RS-3 road switcher. Featuring a V-12, 1,800 hp (1,300 kW) 251B diesel engine, the RS-11 was ALCO's answer to EMD's very successful GP9 .