Results 221 to 230 of about 194,298 (266)

Femtosecond X-Ray Fluorescence

Physical 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   +2 more sources

X-ray fluorescence holography

Journal of Physics: Condensed Matter, 2012
X-ray fluorescence holography (XFH) is a method of atomic resolution holography which utilizes fluorescing atoms as a wave source or a monitor of the interference field within a crystal sample. It provides three-dimensional atomic images around a specified element and has a range of up to a few nm in real space.
Kouichi, Hayashi   +4 more
openaire   +2 more sources

Polarization of molecular x-ray fluorescence

Physical Review Letters, 1988
Polarization of Cl K\ensuremath{\beta} x-ray fluorescence following selective excitation of gaseous ${\mathrm{CH}}_{3}$CL with synchrotron radiation is reported. The degree of polarization of the fluorescence depends sensitively on the chosen incident excitation energy in the Cl K-edge region.
, Lindle   +8 more
openaire   +2 more sources

X-ray Fluorescence

1975
The status of chemical analysis by X-ray fluorescence has developed from that of a laboratory curiosity in the decade 1940–50 to its current position as an almost universal method with, according to a recent estimate, over 8000 spectrometers in use throughout the world.
openaire   +1 more source

Incoherent Imaging with X-Ray Fluorescence

2021
Eine neues Bildgebungsverfahren, Incoherent Diffractive Imaging (IDI), verspricht mittels der in der astronomischen Interferometrie gebräuchlich Methode der Intensitätskorrelationenen hochaufgelöste Strukturinformationen aus Röntgenfluoreszens zu extrahieren.
openaire   +1 more source

Synchrotron X-ray Microbeam Characteristics for X-ray Fluorescence Analysis

Advances in X-ray Analysis, 1994
X-ray fluorescence analysis using a synchrotron x-ray microprobe has become an indispensable technique for non-destructive micro-analysis. One of the most important parameters that characterize the x-ray microbeam system for x-ray fluorescence analysis is the beam size.
Atsuo Iida, Takashi Noma
openaire   +1 more source

A Monte Carlo study of x‐ray fluorescence in x‐ray detectors

Medical Physics, 1999
Advances in digital x‐ray detector systems have led to a renewed interest in the performance of x‐ray phosphors and other detector materials. Indirect flat panel x‐ray detector and charged coupled device (CCD) systems require a more technologically challenging geometry, whereby the x‐ray beam is incident on the front side of the scintillator, and the ...
J M, Boone   +3 more
openaire   +2 more sources

The intensification of X-Ray fluorescent images

Electrical Engineering, 1951
Two experimental models of devices for the intensification of X-ray fluorescent images were put into use in September 1950. These devices have a brightness amplification slightly over 100 times and enable detection of a 3-per cent thickness difference.
openaire   +2 more sources

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