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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Inkjet droplets of radioactive material enable quick, precise testing at NIST
Researchers at the National Institute of Standards and Technology have developed a technique called cryogenic decay energy spectrometry capable of detecting single radioactive decay events from tiny material samples and simultaneously identifying the atoms involved. In time, the technology could replace characterization tasks that have taken months and could support rapid, accurate radiopharmaceutical development and used nuclear fuel recycling, according to an article published on July 8 by NIST.
Auguste Zurkinden
Nuclear Technology | Volume 47 | Number 3 | March 1980 | Pages 494-495
Technical Note | Radioactive Waste | doi.org/10.13182/NT80-A32404
Articles are hosted by Taylor and Francis Online.
A general formulation of the boundary conditions for the commonly used radionuclide transport equation in the geosphere is shown. To evaluate the accuracy of a widely used approximation of the source boundary condition, considering convective flux alone and neglecting dispersive flux, both solutions for an idealized one-dimensional case are derived and compared. It is demonstrated then that the simpler boundary condition gives a good approximation for all cases with weak dispersion. This criterion is fulfilled for a wide range of parametric values, but the applicability of the simpler boundary condition always has to be checked.
