Determination of uranium concentration in a single hair strand by LAICPMS applying continuous and single pulse ablation

2007 ◽  
Vol 22 (5) ◽  
pp. 540 ◽  
Author(s):  
Eyal Elish ◽  
Zeev Karpas ◽  
Avraham Lorber
Keyword(s):  
Uranium Concentration ◽  
Single Pulse ◽  
Single Hair ◽  
Hair Strand ◽  
Single Pulse Ablation

An application of Micro X-ray fluorescence computed tomography for determination of three-dimensional elemental distribution in a single hair strand

2021 ◽  
Author(s):  
Ryosuke Kondo ◽  
Takuma Yamato ◽  
Alvaro Muñoz-Noval ◽  
Sadao Honda ◽  
Yoshinori Nishiwaki ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Trace Elements ◽  
Synchrotron Radiation ◽  
Three Dimensional ◽  
Elemental Distribution ◽  
Three Dimensional Imaging ◽  
X Ray ◽  
Single Hair ◽  
Hair Strand

Three dimensional imaging of trace elements in a single hair strand was achieved by a micro X-ray fluorescence computed tomography (µXRF-CT) using synchrotron radiation. A simple rotational mechanism was attached...

Research of the Wood’s Alloy Crystallization Process Using the Acoustic Method

2021 ◽  
Vol 410 ◽  
pp. 855-861
Author(s):  
Aleksandr Yu. Yaroslavkin ◽  
Eugene A. Tyurin ◽  
Darya A. Melnikova
Keyword(s):  
Speed Of Sound ◽  
Crystallization Process ◽  
Ultrasonic Method ◽  
Single Pulse ◽  
Acoustic Method ◽  
The State ◽  
Sound Signal ◽  
Frequency Range ◽  
Wood’S Alloy

The article examines the process of crystallization of Wood alloy using the ultrasonic method. The dependence of the determination of the speed of sound in three aggregate states of the alloy (liquid, solid, transition (liquid-solid)) was derived. The relation-ship with the amplitude values of the sound signal, a single pulse in determining the speed of sound, as well as in determining the state of the alloy is carried out. The data obtained allow us to analyze the state of the alloy and the measurement time and the specified frequency range directly in the process of crystallization.

scholarly journals The Thousand-Pulsar-Array programme on MeerKAT – I. Science objectives and first results

2020 ◽  
Vol 493 (3) ◽  
pp. 3608-3615 ◽  
Author(s):  
Simon Johnston ◽  
A Karastergiou ◽  
M J Keith ◽  
X Song ◽  
P Weltevrede ◽  
...  
Keyword(s):  
Radio Emission ◽  
Single Pulse ◽  
Wide Band ◽  
Radio Pulsars ◽  
Pulse Trains ◽  
First Results ◽  
Dispersion Measures ◽  
Large Survey ◽  
First Time

ABSTRACT We report here on initial results from the Thousand-Pulsar-Array (TPA) programme, part of the Large Survey Project ‘MeerTime’ on the MeerKAT telescope. The interferometer is used in the tied-array mode in the band from 856 to 1712 MHz, and the wide band coupled with the large collecting area and low receiver temperature make it an excellent telescope for the study of radio pulsars. The TPA is a 5 year project, which aims at to observing (a) more than 1000 pulsars to obtain high-fidelity pulse profiles, (b) some 500 of these pulsars over multiple epochs, and (c) long sequences of single-pulse trains from several hundred pulsars. The scientific outcomes from the programme will include the determination of pulsar geometries, the location of the radio emission within the pulsar magnetosphere, the connection between the magnetosphere and the crust and core of the star, tighter constraints on the nature of the radio emission itself, as well as interstellar medium studies. First, results presented here include updated dispersion measures, 26 pulsars with Faraday rotation measures derived for the first time, and a description of interesting emission phenomena observed thus far.

X-Ray Spectrometric Determination of Copper, Tin, and Uranium in Bronze Heat-Treating Material*

1960 ◽  
Vol 4 ◽  
pp. 457-473
Author(s):  
G. R. Blank ◽  
H. A. Heller
Keyword(s):  
Acid Solution ◽  
Confidence Level ◽  
Uranium Concentration ◽  
Heat Treating ◽  
Internal Standards ◽  
X Ray ◽  
First Order ◽  
Limits Of Error ◽  
Determination Of Copper

AbstractA method is presented for the X-ray spectrometric determination of copper, tin, and uranium in a bronze heat-treating material. The method is based on the irradiation of an acid solution of the sample, to which indium and zinc have been added as internal standards. Quantitative determinations of copper and tin (each in the 40 to 60% range) are calculated from the ratios of the CuKα/ZnKα and SnKα/In Kα intensities. Uranium concentration (in the 1 to 10% range) is calculated from the ratio of the ULα/ In Kα intensities, A correction for the interference of the second-order In Kβ1,3 doublet with the first-order ULα peak is described. The over-all limits of error for single determinations at the 95% confidence level are ±0,58% copper, ±0,56% tin, and ±0,31% uranium.

scholarly journals Determination of uranium concentration and burn-up of irradiated reactor fuel in contaminated areas in Belarus using uranium isotopic ratios in soil samples

2005 ◽  
Vol 93 (12) ◽  
Author(s):  
V. P. Mironov ◽  
J. L. Matusevich ◽  
V. P. Kudrjashov ◽  
P. I. Ananich ◽  
V. V. Zhuravkov ◽  
...  
Keyword(s):  
Analytical Method ◽  
Uranium Concentration ◽  
Soil Samples ◽  
Reactor Fuel ◽  
Isotopic Ratios

SummaryAn analytical method is described for the estimation of uranium concentrations, of

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