Liquid scintillation counters calibration stability over long timescales [0.03%]
长时间段下的液体闪烁计数器校准稳定性研究
Pawel Gaca,Phillip E Warwick,Ian W Croudace
Pawel Gaca
Liquid scintillation spectrometry is widely used for the analysis of alpha and beta emitting radionuclides. Robust calibration of liquid scintillation (LS) spectrometers is fundamental to accurate LS measurement but at the same time is time...
Richard I Marsh,Ian W Croudace,Phillip E Warwick et al.
Richard I Marsh et al.
Quantitative extraction of tritium from a sample matrix is critical to efficient measurement of the low-energy pure beta emitter. Oxidative pyrolysis using a tube furnace (Pyrolyser) has been adopted as an industry standard approach for the...
Rolf Zeisler,Hana Cho,Iberê Souza Ribeiro Junior et al.
Rolf Zeisler et al.
A new γγ coincidence system has been set up at NIST. It is operated with a digital data finder supported by new software developed at NIST. The system is used to explore possible enhancements in instrumental neutron activation analysis (I...
Maciej Chotkowski,Damian Połomski
Maciej Chotkowski
The extraction of pertechnetate ions from aquous solutions containing various concentrations of nitric acid into hydrophobic ionic liquids (ILs) has been examined at 25, 50 and 70 °C. The results show that the distribution ratio of Tc (DTc...
Solvent extraction of Cu, Mo, V, and U from leach solutions of copper ore and flotation tailings [0.03%]
从铜精矿和浮选尾矿的浸出液中用萃取剂萃取铜、钼、钒和铀的研究
Tomasz Smolinski,Danuta Wawszczak,Andrzej Deptula et al.
Tomasz Smolinski et al.
Flotation tailings from copper production are deposits of copper and other valuable metals, such as Mo, V and U. New hydrometallurgical technologies are more economical and open up new possibilities for metal recovery. This work presents re...
Radiation hazards in PF-1000 plasma generator fusion research (part 3) [0.03%]
PF-1000等离子体发生器聚变研究中的辐射危害(三)
Kamil Szewczak,Slawomir Jednorog
Kamil Szewczak
Plasma experiments conducted on the PF-1000 device generate the release of neutrons and ionizing radiation that are the source of immediate exposure to personnel. Neutron activation of materials in the research device and the surroundings i...
Georg Steinhauser,Christian Knecht,Wolfgang Sipos
Georg Steinhauser
Meat of wild boars is not only known for high 137Cs activity concentrations but also for the remarkable constancy of these levels. Even decades after the Chernobyl accident, the 137Cs levels in wild boar meat in Central Europe have not decl...
A DFT study of uranyl hydroxyl complexes: structure and stability of trimers and tetramers [0.03%]
尿酰羟基复合物的DFT研究：三聚体和四聚体结构与稳定性
Ewelina Grabias,Marek Majdan
Ewelina Grabias
A DFT study of U(VI) hydroxy complexes was performed with special attention paid to the [(UO2)3(OH)5(H2O)4-7]+ and [(UO2)4(OH)7(H2O)5-8]+ species. It was established that the ionicity of the U=O bond increased when moving from [(UO2)(H2O)5]...
R Misiak,R Walczak,B Wąs et al.
R Misiak et al.
The therapeutic radionuclide 47Sc was produced through the 48Ca(p,2n) channel on a proton beam accelerator. The obtained results show that the optimum proton energies are in the range of 24-17 MeV, giving the possibility to produce 47Sc rad...
Somatostatin analogues labeled with copper radioisotopes: current status [0.03%]
铜放射性同位素标记的生长抑素类似物：现状
Aleksandra Marciniak,Justyna Brasuń
Aleksandra Marciniak
Peptide receptor radionuclide therapy (PRRT) is a promising way to treat patients with inoperable tumors or metastatic neuroendocrine tumors. This therapeutic strategy is using radiolabeled peptides, which are capable of selective biding to...