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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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Commercial nuclear innovation "new space" age
In early 2006, a start-up company launched a small rocket from a tiny island in the Pacific. It exploded, showering the island with debris. A year later, a second launch attempt sent a rocket to space but failed to make orbit, burning up in the atmosphere. Another year brought a third attempt—and a third failure. The following month, in September 2008, the company used the last of its funds to launch a fourth rocket. It reached orbit, making history as the first privately funded liquid-fueled rocket to do so.
D. Antonakas, R. Corcuera, P. Govaerts
Nuclear Science and Engineering | Volume 48 | Number 1 | May 1972 | Pages 1-9
Technical Paper | doi.org/10.13182/NSE72-A22451
Articles are hosted by Taylor and Francis Online.
Fast reactor parameters are compared as obtained either by a detailed fine group calculation where the scattering resonances of light and intermediate elements are well accounted for, or by coarse group calculations (∼25 groups). These fundamental mode calculations are performed with cross sections derived from the same basic data in order to check only the approximations of the calculational methods. The parameters considered are , , , one-group cross sections, danger coefficients, and the spatial heterogeneity effect. The properties which can be reliably evaluated with few groups are indicated. The fine group calculations are performed with the PROMETHEE code developed at Cadarache, using a lethargy mesh (usually about 2000 groups).