Results 61 to 70 of about 444,901 (298)

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

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

An Ionizing Radiation Sensor Using a Pre-Programmed MAHAOS Device

Sensors, 2014
Metal-aluminum oxide–hafnium aluminum oxide‒silicon oxide–silicon (hereafter MAHAOS) devices can be candidates for ionizing radiation sensor applications. In this work, MAHAOS devices (SONOS-like structures with high k stack gate dielectric) were studied
Wen-Ching Hsieh, Hao-Tien Daniel Lee, Fuh-Cheng Jong   +2 more
doaj   +1 more source

Constraining the Emissivity of Ultrahigh Energy Cosmic Rays in the Distant Universe with the Diffuse Gamma-ray Emission

, 2011
Ultra-high cosmic rays (UHECRs) with energies >10^19 eV emitted at cosmological distances will be attenuated by cosmic microwave and infrared background radiation through photohadronic processes.
Cavallo, Coppi, Dermer, Farrar, Farrar, Felix Aharonian, Finke, Guetta, Inoue, Kistler, Langer, Le, Neronov, Ruo-Yu Liu, Ryu, Stanek, Stecker, Wanderman, Wdowczyk, Xiang-Yu Wang, Yüksel   +20 more
core   +1 more source

Radiation zeros and scalar particles beyond the standard model [PDF]

, 1998
Standard radiation zeros arise from the factorization properties of tree-level amplitudes involving a massless photon and can occur when all charged particles in the initial and final state have the same sign.
Alanakyan, Blümlein, Buchmüller, Cuypers, Cuypers, Deshpande, Doncheski, Goebel, Grose, Hewett, Hewett, Kauffman, Keith, Kramer, M.A. Doncheski, Nadeau, R.W. Robinett, Rizzo, Éboli   +18 more
core   +2 more sources

Diffuse gamma radiation

The Astrophysical Journal, 1978
An examination of the intensity, energy spectrum, and spatial distribution of the diffuse gamma-radiation observed by SAS-2 satellite away from the galactic plane in the energy range above 35 MeV has shown that it consists of two components. One component is generally correlated with galactic latitudes, the atomic hydrogen column density was deduced ...
C. E. Fichtel, G. A. Simpson, D. J. Thompson   +2 more
openaire   +1 more source

Galactic plane gamma-radiation [PDF]

The Astrophysical Journal, 1979
Analysis of the SAS 2 data together with the COS B results shows that the distribution of galactic gamma-radiation has several similarities to that of other large-scale tracers of galactic structure. The radiation is primarily confined to a thin disc which exhibits offsets from b = 0 degrees similar to warping at radio frequencies.
R. C. Hartman, D. A. Kniffen, D. J. Thompson, C. E. Fichtel, H. B. Ogelman, T. Tumer, M. E. Ozel   +6 more
openaire   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Chemoradiation treatment with or without concurrent tumor-treating fields (TTFields) therapy in newly diagnosed glioblastoma (GBM) patients in China

Chinese Neurosurgical Journal
Background Tumor-treating fields (TTFields) therapy and radiotherapy may have synergistic anti-glioma effect based on preclinical studies. The combination of chemoradiation therapy (CRT) with TTFields therapy has noticeably attracted clinicians ...
Liping Liang, Lingchao Chen, Chunxia Ni, Wenyin Shi, Zhirui Zhou, Shu Chen, Wenjia Zhu, Jiabing Liu, Xianxin Qiu, Wanzun Lin, Junyan Zhang, Zhiyong Qin, Yang Wang   +12 more
doaj   +1 more source

Influence of gamma radiation on the structure of porous graphene

Nuclear Engineering and Technology
To understand the modification effect of gamma radiation on porous graphene, this study investigates the changes in structure and functional groups of porous graphene after exposure to gamma radiation.
Hanwen Lin, Yihong Yan, Junqi Wang, Weiqiang Sun, Guang Hu, Huasi Hu   +5 more
doaj   +1 more source