Modern Nuclear Chemistry

Loveland, W.; Morrissey, D. J.; Seaborg, Glenn T.

doi:10.1002/0471768626

Cited by 45 publications

(99 citation statements)

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“…Alpha particles are highly energetic (4-9 MeV), relatively large in size, and have a high chargeto-mass ratio, which allows them to readily interact with surrounding matter and frequently create ionization events along their path [50,51]. This high frequency of ionization events translates to alpha particles exhibiting a high rate of linear energy transfer (LET) of approximately 100 keV µm -1 .…”

Section: Radiopharmaceutical Applicationsmentioning

confidence: 99%

The Radiochemical and Radiopharmaceutical Applications of Radium

2016

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This review focuses on the chemistry and application of radium isotopes to environmental monitoring, analytical, and medicinal uses. In recent years, radium has been used primarily as a tracer to study the migration of radioactive substances in environmental systems. Tracing the naturally occurring radium isotopes in mineral and water sources allows for the determination of source location, residence time, and concentrations. An understanding of the concentration of radionuclides in our food and water sources is essential to everyone's health as alpha particle decay is highly damaging in vivo. Due to this high radiobiological effectiveness, there is increased interest in using alpha-emitting radionuclides to prepare new, therapeutic radiopharmaceutical drugs. Selected studies from the recent literature are provided as examples of these modern applications of radium isotopes.

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Section: Radiopharmaceutical Applicationsmentioning

confidence: 99%

The Radiochemical and Radiopharmaceutical Applications of Radium

2016

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“…This step, which takes a few hours, dissolves the uranium, plutonium, and fission products, leaving the undissolved cladding to be disposed of as high active solid waste. A solution of 30% tri-n--butylphosphate (TBP) in kerosene type diluent is used initially to separate U and Pu from the vast majority of the fi ssion products [10].…”

Section: Reprocessability Of Molybdenum and Magnesia Based Inert Matrmentioning

confidence: 99%

“…In preparation for the well-established PUREX process spent fuel is dissolved in near boiling 7-10 mol/L nitric acid [10,23]. Therefore, the dissolution behavior of MgO and Mo based inert matrix fuel was investigated in the heat (90°C).…”

Section: Dissolution Behaviormentioning

confidence: 99%

Reprocessability of molybdenum and magnesia based inert matrix fuels

et al. 2015

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Abstract. This work focuses on the reprocessability of metallic 92 Mo and ceramic MgO, which is under investigation for (Pu,MA)-oxide (MA = minor actinide) fuel within a metallic 92 Mo matrix (CERMET) and a ceramic MgO matrix (CERCER). Magnesium oxide and molybdenum reference samples have been fabricated by powder metallurgy. The dissolution of the matrices was studied as a function of HNO 3 concentration (1-7 mol/L) and temperature (25-90°C). The rate of dissolution of magnesium oxide and metallic molybdenum increased with temperature. While the MgO rate was independent of the acid concentration (1-7 mol/L), the rate of dissolution of Mo increased with acid concentration. However, the dissolution of Mo at high temperatures and nitric acid concentrations was accompanied by precipitation of MoO 3 . The extraction of uranium, americium, and europium in the presence of macro amounts of Mo and Mg was studied by three different extraction agents: tri-n-butylphosphate (TBP), N, N-dimethyl-N,N-dioctylhexylethoxymalonamide (DMDOHEMA), and N,N,N',N'--tetraoctyldiglycolamide (TODGA). With TBP no extraction of Mo and Mg occurred. Both matrix materials are partly extracted by DMDOHEMA. Magnesium is not extracted by TODGA (D < 0.1), but a weak extraction of Mo is observed at low Mo concentration.

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“…There exists a variety pathways of nuclear conversions: alpha decay, beta decay, spontaneous fission, electron capture, internal conversion, etc., to name but a few. For a comprehensive overview, see [9,10]. It is very interesting to note that among the more than 3,000 isotopes, there are only 265 stable isotopes, all others being radioactive!…”

Section: The Radioactive Decaymentioning

confidence: 99%

First-order differential equations in chemistry

Scholz

2014

ChemTexts

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Many processes and phenomena in chemistry, and generally in sciences, can be described by first-order differential equations. These equations are the most important and most frequently used to describe natural laws. Although the math is the same in all cases, the student may not always easily realize the similarities because the relevant equations appear in different topics and contain different quantities and units. This text was written to present a unified view on various examples; all of them can be mathematically described by first-order differential equations. The following examples are discussed: the Bouguer-Lambert-Beer law in spectroscopy, time constants of sensors, chemical reaction kinetics, radioactive decay, relaxation in nuclear magnetic resonance, and the RC constant of an electrode.

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Modern Nuclear Chemistry

Cited by 45 publications

References 0 publications

The Radiochemical and Radiopharmaceutical Applications of Radium

The Radiochemical and Radiopharmaceutical Applications of Radium

Reprocessability of molybdenum and magnesia based inert matrix fuels

First-order differential equations in chemistry

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