Results 11 to 20 of about 216,989 (292)

Charge Determination of High Energy Electrons and Nuclei by Synchrotron Radiation with AMS [PDF]

, 1998
We investigate the possibilities to identify the charge of TeV electrons and PeV nuclei using their synchrotron radiation in the earth's magnetic field. Characteristics of synchrotron radiation photons are evaluated and methods of detection are discussed.
Ahlen, Barbiellini, Barwick, Golden, H. Hofer, Jackson, M. Pohl   +6 more
core   +3 more sources

High-fluence and high-gain multilayer focusing optics to enhance spatial resolution in femtosecond X-ray laser imaging

Nature Communications, 2022
Here, the authors realize an ultra-high fluence X-ray laser by high-gain multilayer focusing optics. This enables in-solution imaging with 2-nm resolution in a single-pulse exposure, making strides toward biomolecular imaging under physiological ...
Hirokatsu Yumoto, Takahisa Koyama, Akihiro Suzuki, Yasumasa Joti, Yoshiya Niida, Kensuke Tono, Yoshitaka Bessho, Makina Yabashi, Yoshinori Nishino, Haruhiko Ohashi   +9 more
doaj   +1 more source

Simulations of particle acceleration beyond the classical synchrotron burnoff limit in magnetic reconnection: An explanation of the Crab flares [PDF]

, 2013
It is generally accepted that astrophysical sources cannot emit synchrotron radiation above 160 MeV in their rest frame. This limit is given by the balance between the accelerating electric force and the radiation reaction force acting on the electrons ...
Begelman, Mitchell C., Cerutti, Benoit, Uzdensky, Dmitri A., Werner, Gregory R.   +3 more
core   +1 more source

Unconventional exciton evolution from the pseudogap to superconducting phases in cuprates

Nature Communications, 2022
The nature of the excitations in the pseudogap regime and their relation to superconductivity remain core issues in cuprate high-T c superconductivity.
A. Singh, H. Y. Huang, J. D. Xie, J. Okamoto, C. T. Chen, T. Watanabe, A. Fujimori, M. Imada, D. J. Huang   +8 more
doaj   +1 more source

The synchrotron peak shift during high-energy flares of blazars [PDF]

, 1999
A prediction for the energy shift of the synchrotron spectrum of flat-spectrum radio quasars (FSRQs) during high-energy flares is presented. If the $\gamma$-ray emission of FSRQs is produced by Comptonization of external radiation, then the peak of the ...
Aharonian F., Bednarek W., Bottcher M., Collmar W., Fossati G., Ghisellini G., Markus Böttcher, Mastichiadis A.   +7 more
core   +2 more sources

SUPERLUMINAL SYNCHROTRON RADIATION

Resource-Efficient Technologies, 2018
To avoid complex computations based on wide Fourier expansions, the electromagnetic field of synchrotron radiation (SR) was analyzed using Lienard–Wiechert potentials in this work. The retardation equation was solved for ultrarelativistic movement of rotating charge at distances up to the trajectory radius.
Aginian, M. A., Arutunian, S. G., Lazareva, E. G., Margaryan, A. V.   +3 more
openaire   +3 more sources

Engineering a local acid-like environment in alkaline medium for efficient hydrogen evolution reaction

Nature Communications, 2022
While catalysts have intrinsic activities toward reactions, such performances often require further optimization. Here, authors engineer an acid-like environment in alkaline media by fine-tuning the reaction environment of platinum nanoparticles on oxide
Hao Tan, Bing Tang, Ying Lu, Qianqian Ji, Liyang Lv, Hengli Duan, Na Li, Yao Wang, Sihua Feng, Zhi Li, Chao Wang, Fengchun Hu, Zhihu Sun, Wensheng Yan   +13 more
doaj   +1 more source

Visualizing the valence states of europium ions in Eu-doped BaAl2O4 using X-ray nanoprobe mapping

Journal of Synchrotron Radiation, 2022
This study develops and successfully demonstrates visualization methods for the characterization of europium (Eu)-doped BaAl2O4 phosphors using X-ray nanoprobe techniques.
Yu-Hao Wu, Yung-Yang Lin, Jeng-Lung Chen, Shih-Yu Fu, Shu-Chi Huang, Chien-yu Lee, Bo-Yi Chen, Gung-Chian Yin, E-Wen Huang, Mau-Tsu Tang, Bi-Hsuan Lin   +10 more
doaj   +1 more source

Relation between the Co-O bond lengths and the spin state of Co in layered Cobaltates: a high-pressure study

Scientific Reports, 2017
The pressure-response of the Co-O bond lengths and the spin state of Co ions in a hybrid 3d-5d solid-state oxide Sr2Co0.5Ir0.5O4 with a layered K2NiF4-type structure was studied by using hard X-ray absorption and emission spectroscopies. The Co-K and the
Yi-Ying Chin, Hong-Ji Lin, Zhiwei Hu, Chang-Yang Kuo, Daria Mikhailova, Jenn-Min Lee, Shu-Chih Haw, Shin-An Chen, Walter Schnelle, Hirofumi Ishii, Nozomu Hiraoka, Yen-Fa Liao, Ku-Ding Tsuei, Arata Tanaka, Liu Hao Tjeng, Chien-Te Chen, Jin-Ming Chen   +16 more
doaj   +1 more source

Embedding atomic cobalt into graphene lattices to activate room-temperature ferromagnetism

Nature Communications, 2021
Graphene has shown incredible promise as ideal material for numerous fields; however its use in spintronics has been hampered by the lack of intrinsic magnetism.
Wei Hu, Chao Wang, Hao Tan, Hengli Duan, Guinan Li, Na Li, Qianqian Ji, Ying Lu, Yao Wang, Zhihu Sun, Fengchun Hu, Wensheng Yan   +11 more
doaj   +1 more source