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The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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2024 ANS Annual Conference
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Las Vegas, NV|Mandalay Bay Resort and Casino
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Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
M. Kelm, E. Bohnert
Nuclear Technology | Volume 129 | Number 1 | January 2000 | Pages 119-122
Technical Paper | Radioactive Waste Management and Disposal | doi.org/10.13182/NT00-A3050
Articles are hosted by Taylor and Francis Online.
The yields of the different radiolytic products formed by gamma radiolysis from NaCl brines at ambient temperature and dose rates between 0.1 and 1 kGy/h were determined. At a chloride concentration of 5.3 mol/l, H2, O2, and ClO3- were formed proportional to the dose and independent from the dose rate with G values of 0.6, 0.16, and 0.074, respectively. At a concentration of 2 mol/l, the chlorate yield dropped to a value close to zero, and the gas composition became stoichiometric. At pH 12 and in the presence of heavy metal ions, the yield of oxygen increased at the expense of chlorate. The concentrations of hypochlorite and chlorite were usually in the micromole per litre range. In pressurized solutions of 5.3 mol/l Cl- where all radiolytic gases were kept dissolved, equilibrium concentrations of radiolytic products were almost reached at a dose of ~1 MGy. The partial pressure of radiolytic gases was ~35 bars, and the chlorate concentration was ~170 mol/l.