Results 71 to 80 of about 524,505 (250)

Fading hard X-ray emission from the Galactic Centre molecular cloud Sgr B2

, 2010
The centre of our Galaxy harbours a 4 million solar mass black hole that is unusually quiet: its present X-ray luminosity is more than 10 orders of magnitude less than its Eddington luminosity. The observation of iron fluorescence and hard X-ray emission
A. Decourchelle, A. Goldwurm, Berger, Bélanger, Crocker, Cunha, Davies, Dogiel, Fryer, G. Bélanger, G. Ponti, G. Trap, Ghez, Gillessen, Giveon, Goicoechea, Inui, Koyama, Koyama, La Parola, LaRosa, Leahy, Lodders, M. R. Morris, Muno, Murakami, Murakami, Nakajima, Oka, Park, Pellegrini, Ponti, Protheroe, R. Terrier, R. Warwick, Reid, Ryu, Sakano, Strong, Takagi, Tatischeff, V. Tatischeff, Valinia, Verner, Yusef-Zadeh, Yusef-Zadeh   +45 more
core   +3 more sources

Analyses of Apollo 11 and 12 rocks and soils by neutron activation [PDF]

Neutron activation analysis of Apollo 11 and 12 rocks and soils, and X ray fluorescence and radiochemistry ...
Kharkar, D. P., Turekian, K. K.
core   +1 more source

Fluorescence imaging of nonlinear x-ray propagation and lasing

Physical Review Research
We introduce a general approach for probing nonlinear x-ray propagation by imaging secondary fluorescence emitted transverse to the driving field. When a short, intense x-ray pulse excites a deep 1s core orbital, subsequent Kα emission from spin-orbit ...
Svyatoslav Blinov, Pavel Krasnov, Faris Gelmukhanov, Jan-Erik Rubensson, Sergey Polyutov, Victor Kimberg   +5 more
doaj   +1 more source

X-ray frequency combs from optically controlled resonance fluorescence

, 2013
An x-ray pulse-shaping scheme is put forward for imprinting an optical frequency comb onto the radiation emitted on a driven x-ray transition, thus producing an x-ray frequency comb.
Buth, Christian, Cavaletto, Stefano M., Harman, Zoltan, Keitel, Christoph H.   +3 more
core   +1 more source

Ptychographically assisted X-ray fluorescence nanotomography for characterization of complex materials [PDF]

, 2021
Dmitry Karpov, Mirko Holler, Darío Ferreira Sánchez, Ana Díaz   +3 more
openalex   +1 more source

X‑ray Fluorescence Techniques for Element Abundance Analysis in Wine

ACS Omega, 2021
Jasmina Obhod̵aš, Vladivoj Valković, Andrija Vinković, Davorin Sudac, Ivana Čanad̵ija, Tihana Pensa, Željka Fiket, Anna Turyanskaya, Thomas Bretschneider, Christoph Wilhelmer, Gerelmaa Gunchin, Peter Kregsamer, Peter Wobrauschek, Christina Streli   +13 more
doaj   +1 more source

Balanced filters for the analysis of Al, Si, K, Ca, Fe, and Ni [PDF]

Balanced filters evaluated for performance in X-ray fluorescence analysis of lunar and planetary surface ...
Dunne, J. A., Nickle, N. L.
core   +1 more source

X-ray standing-wave fluorescence analysis of electrodeposited Tl on clean and oxygen-reconstructed Cu(111) [PDF]

, 1985
G. Materlik, J. Zegenhagen, W. Uelhoff
openalex   +1 more source

Effects of Water Absorption on Mercury Contamination in Fiberbank Sediments using X-ray Fluorescence Spectrometer

, 2021
Siwen An, Faisal Zeeshan, Börje Norlin, Göran Thungström   +3 more
openalex   +1 more source

Total reflection X-ray fluorescence

Physical Sciences Reviews, 2018
Abstract Total reflection X-ray fluorescence (TXRF) spectrometry is a non-destructive and surface sensitive multi-element analytical method based on energy dispersive X-ray fluorescence spectrometry with detection limits in the lower picogram range. It utilizes the total reflection of the primary X-ray beam at or below the critical angle of incidence ...
openaire   +3 more sources