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Measurements of fission fragments in the interaction of 19F + 181Ta system at 115 MeV
This paper details the cross-section measurements of 38 fission-like events in 19 F + 181 Ta system at energy 115 MeV, originating from complete and/or...
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Removal of fission product tellurium and iodine from recently irradiated HEU using copper metal
Gamma detection of select fission products or activation products such as 153 Sm and 239 Np in a fission sample is difficult due to gamma interferences...
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A comprehensive investigation of an approach for 144Ce-separation as a by-product of the fission molybdenum-99 process
Cerium-144 ( 144 Ce), as a long-lived β emitter radioisotope (E βavg = 82.25 keV, T 1/2 = 284.9 d), is a potentially promising radionuclide to be used in...
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Establishing the case for a May 2010 low-yield, unannounced nuclear test in North Korea
New data, analyses and modelling are presented concerning the unprecedented mid-May 2010 series of fission product detections in ground level air on...
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Column separation of tetravalent cerium fission products from trivalent rare earth radio-isotopes
Rapid and efficient isolation of individual rare earth element (REE) radioisotopes from complex mixtures is necessary to support the fields of...
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Stable neodymium isotopic composition of nuclear debris samples
Fission reactions result in Nd isotope decay products which alter Nd isotopic compositions measured in nuclear debris. Trinitite samples measured by...
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Noble gas constraints on spent fuel irradiation histories
Fission gas isotopic compositions are sensitive to a variety of reactor operating parameters that include the neutron flux, neutron fluence at...
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Measurements of 135Cs/137Cs in debris from the Trinity nuclear test
135 Cs/ 137 Cs measurements were performed on a set of debris samples from the first nuclear test, Trinity. Debris from several locations around ground...
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Fractionation of nuclear debris 137Cs and 90Sr in Fayetteville, AR rain 1973–1977
During the period of June 1973 to July 1977, the People’s Republic of China detonated five nuclear weapons in the atmosphere. The resulting fallout...
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Isolating trace fission product elements in separated plutonium for applications in nuclear forensics
A chemical methodology has been selected to isolate and concentrate select trace fission product (FP) elements from separated Pu for nuclear...
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Discovery, nuclear properties, synthesis and applications of technetium-101
Technetium-101 ( 101 Tc) has been poorly studied in comparison with other Tc isotopes, although it was first identified over ~80 years ago shortly...
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Demonstration of 151Sm analysis using Trinity nuclear debris samples
The long-lived fission product 151 Sm (T 1/2 ≈ 90 y) present in archived dissolved Trinity nuclear test debris samples was analyzed using liquid...
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Localization of the failed fuel subassembly in fast breeder test reactor by the analysis of fission gases in cover gas
Identification of a failed fuel subassembly due to the dry rupture of its fuel pin in Fast Breeder Test Reactor was accomplished from the measurement...
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The Mechanism of Swelling of Irradiated Oxide Nuclear Fuel: Part I. Normal Operating Condition
AbstractThe fuel swelling during normal operation is considered within the framework of first-order phase transition theory. It is shown that the...
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Rapid activation product separations from fission products and soil matrixes
A rapid method for the separation and qualitative analysis of several neutron activation products ( 198 Au, 192 Ir, 72 Ga, 51 Cr, 191/195m/197 Pt, 54 Mn, 57 C...
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Steady-state radiochemical transport model of the molten salt reactor experiment
A radiochemical transport model of the Molten Salt Reactor Experiment (MSRE) was formulated based on the material derivative featuring system level...
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Quantification techniques of mass-separation and ion yield for the detection of radioactive isotopes
This research demonstrates two methods of quantifying ion yield efficiency using an inductively coupled plasma mass spectrometer. The mass...
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In the nuclear explosion monitoring context, what is an anomaly?
In the early years of nuclear explosion monitoring, experts used downwind detections with meaningful ratios of radioactive species to identify an...
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Design and validation of a gamma-ray scanning system for measuring irradiated nuclear fuel
A prototype gamma-ray scanning system was designed to perform post-irradiation examination measurements of nuclear fuel. The system is composed of a...
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Radiochemical separations and experimental measurements of short-lived fission products from 14 MeV irradiation of depleted uranium
This work focused on the experimental analysis of depleted uranium irradiated with 14 MeV neutrons to obtain fission yields for 20 fission products...
