Results 11 to 20 of about 2,479,356 (392)

Femtosecond X-Ray Fluorescence [PDF]

open access: yesPhysical Review Letters, 2000
Using few-cycle-driven coherent laser harmonics, K-shell vacancies have been created in light elements, such as boron (E(B) = 188 eV) and carbon (E(B) = 284 eV), on a time scale of a few femtoseconds for the first time. The capability of detecting x-ray fluorescence excited by few-femtosecond radiation with an accuracy of the order of 1 eV paves the ...
, Schnurer   +6 more
openaire   +3 more sources

OVERVIEW OF X-RAY FLUORESCENCE SPECTROMETRY [PDF]

open access: yesFiabilitate şi Durabilitate, 2021
One of the techniques used in identifying the constituent chemical elements of a material is the X-ray fluorescence method. From the analysis of X-ray fluorescence data the energy and intensity of the characteristic photons emitted by the sample can be
Nicoleta-Maria MIHUȚ   +1 more
doaj  

Shrinkable Hydrogel-Enhanced Biomarker Detection with X-ray Fluorescent Nanoparticles

open access: yesNanomaterials, 2022
This paper reports a new method to enhance the sensitivity of nanoparticle-based protein detection with X-ray fluorescence by exploiting the large volume reduction of hydrogel upon dehydration.
Yiting Zheng, Ruiqing Huo, Ming Su
doaj   +1 more source

ONLINE X-RAY FLUORESCENCE SCREENING OF ORE FOR SILVER AT THE MINES OPERATED BY KAZAKHMYS CORPORATION LLC [PDF]

open access: yesSustainable Extraction and Processing of Raw Materials Journal, 2021
. This paper discusses the process and methodological aspects of X–ray fluorescence online monitoring of ore silver grade at the underground mines and open pits operated by Kazakhmys Corporation LLC. The analysis was complicated by the requirement to: a)
Zaure Abdrakhmanova   +4 more
doaj   +1 more source

Halogenated Thermally Activated Delayed Fluorescence Materials for Efficient Scintillation

open access: yesResearch, 2023
Organic scintillators, materials with the ability to exhibit luminescence when exposed to X-rays, have aroused increasing interest in recent years. However, the enhancement of radioluminescence and improving X-ray absorption of organic scintillators lie ...
Xiao Wang   +17 more
doaj   +1 more source

Palaeomagnetic and synchrotron analysis of >1.95 Ma fossil-bearing palaeokarst at Haasgat, South Africa

open access: yesSouth African Journal of Science, 2014
Palaeomagnetic analysis indicates that Haasgat, a fossil-bearing palaeocave in the Gauteng Province of South Africa, is dominated by reversed magnetic polarity in its oldest, deepest layers and normal polarity in the younger layers.
Andy I.R. Herries   +7 more
doaj   +1 more source

Quantitative analysis by X ray fluorescence

open access: yesMateriales de Construccion, 1966
Not ...
José Luis Sagrera
doaj   +1 more source

X-ray Fluorescence Computed Tomography (XFCT) Imaging with a Superfine Pencil Beam X-ray Source

open access: yesPhotonics, 2021
X-ray fluorescence computed tomography (XFCT) is a molecular imaging technique that can be used to sense different elements or nanoparticle (NP) agents inside deep samples or tissues. However, XFCT has not been a popular molecular imaging tool because it
Ignacio O. Romero   +3 more
doaj   +1 more source

Determination of chlorine in concretes by X ray fluorescence methods

open access: yesMateriales de Construccion, 1967
Not ...
J. L. Sagrera, B. Bacle
doaj   +1 more source

Discovery of X-rays from Mars with Chandra [PDF]

open access: yes, 2002
On 4 July 2001, X-rays from Mars were detected for the first time. The observation was performed with the ACIS-I detector onboard Chandra and yielded data of high spatial and temporal resolution, together with spectral information.
Cravens   +26 more
core   +2 more sources

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