Results 51 to 60 of about 134,130 (301)

Vibrational wavepacket dynamics in Fe carbene photosensitizer determined with femtosecond X-ray emission and scattering

Nature Communications, 2020
Photoinduced non-adiabatic intramolecular processes have important applications but their mechanisms are challenging to explore. Here the authors detect and assign vibrational wavepacket dynamics in a Fe carbene complex by ultrafast X-ray emission ...
Kristjan Kunnus, Morgane Vacher, Tobias C. B. Harlang, Kasper S. Kjær, Kristoffer Haldrup, Elisa Biasin, Tim B. van Driel, Mátyás Pápai, Pavel Chabera, Yizhu Liu, Hideyuki Tatsuno, Cornelia Timm, Erik Källman, Mickaël Delcey, Robert W. Hartsock, Marco E. Reinhard, Sergey Koroidov, Mads G. Laursen, Frederik B. Hansen, Peter Vester, Morten Christensen, Lise Sandberg, Zoltán Németh, Dorottya Sárosiné Szemes, Éva Bajnóczi, Roberto Alonso-Mori, James M. Glownia, Silke Nelson, Marcin Sikorski, Dimosthenis Sokaras, Henrik T. Lemke, Sophie E. Canton, Klaus B. Møller, Martin M. Nielsen, György Vankó, Kenneth Wärnmark, Villy Sundström, Petter Persson, Marcus Lundberg, Jens Uhlig, Kelly J. Gaffney   +40 more
doaj   +1 more source

The application of high-temperature X-ray diffraction and infrared emission spectroscopy to the thermal decomposition of krohnkite

, 2016
High-temperature X-ray diffraction and infrared emission spectroscopy have been applied to measure the thermal stability of the sulphate mineral kro¨hnkite Na2Cu(SO4)2 2H2O. Kro¨hnkite shows a low thermal stability.
Scholz, Ricardo, Frost, Ray Leslie, Belotti, Fernanda Maria, Lima, Jessica, Ruan, Xiuxiu, Cipriano, Ricardo Augusto Scholz, Frost, Ray, Belotti, Fernanda, Lim, Jéssica, Testasicca, Leonardo Pena   +9 more
core   +1 more source

Studying individual magnetic nanoparticles with X-ray PEEM [PDF]

, 2014
The thesis addresses a subject with broad implications in various scientific and technical areas. It presents unique direct observations of the magnetic state of single particles of iron (Fe), cobalt (Co) and nickel (Ni) with nanoscopic dimensions by ...
Balan, Ana-Maria
core   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Ultrafast Time-Resolved Hard X-Ray Emission Spectroscopy on a Tabletop

Physical Review X, 2016
Experimental tools capable of monitoring both atomic and electronic structure on ultrafast (femtosecond to picosecond) time scales are needed for investigating photophysical processes fundamental to light harvesting, photocatalysis, energy and data ...
Luis Miaja-Avila, Galen C. O’Neil, Young I. Joe, Bradley K. Alpert, Niels H. Damrauer, William B. Doriese, Steven M. Fatur, Joseph W. Fowler, Gene C. Hilton, Ralph Jimenez, Carl D. Reintsema, Daniel R. Schmidt, Kevin L. Silverman, Daniel S. Swetz, Hideyuki Tatsuno, Joel N. Ullom   +15 more
doaj   +1 more source

Theory of resonant X-ray emission spectroscopy

Journal of Synchrotron Radiation, 2001
A short review is presented of recent topics in resonant X-ray emission spectroscopy (RXES), especially of the polarization dependence of RXES in d and f electron systems. Polarization-dependent RXES provides important information on the symmetry of electronic states. A scattering-angle dependence in the fluorescence yield of rare-earth metals, RXES in
openaire   +2 more sources

A Study of Vitrified Nuclear Wasteforms by Molecular Dynamics, Electron Microscopy and Raman Spectroscopy [PDF]

, 2015
In this study an attempt is made to create molecular dynamics (MD) models of borate glass, alkali borosilicate glasses, and UK vitreous High Level Radioactive Wasteforms.
Magnox Ltd, Goodman, Barrie J.
core  

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Five-analyzer Johann spectrometer for hard X-ray photon-in/photon-out spectroscopy at the Inner Shell Spectroscopy beamline at NSLS-II: design, alignment and data acquisition

Journal of Synchrotron Radiation
Here, a recently commissioned five-analyzer Johann spectrometer at the Inner Shell Spectroscopy beamline (8-ID) at the National Synchrotron Light Source II (NSLS-II) is presented.
Akhil Tayal, David Scott Coburn, Donald Abel, Max Rakitin, Oksana Ivashkevych, Jakub Wlodek, Dominik Wierzbicki, Weihe Xu, Evgeny Nazaretski, Eli Stavitski, Denis Leshchev   +10 more
doaj   +1 more source

A 2 h periodic variation in the low-mass X-ray binary Ser X-1

, 2013
Spectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines.
Cornelisse, R., Steeghs, D., Casares, J., Charles, P. A.   +3 more
core   +1 more source