Results 41 to 50 of about 74,579 (111)

Mars' Ionospheric Response to the Onset and Early Phase of 20 May 2024 Solar Flare

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Solar extreme ultraviolet (EUV, 10–100 nm) and X‐ray (<10 nm) photons are the primary ionization source for the dayside Mars ionosphere. Their fluxes, especially at short wavelengths, increase significantly during solar flares. Among the series of solar flares and solar storms encountered by Earth and Mars in May 2024, one of the strongest ...
Shaosui Xu, Edward M. Thiemann, Ali Rahmati, David L. Mitchell, Kathleen G. Hanley, Wenyi Sun, James P. McFadden, Christopher M. Fowler, Mehdi Benna, Christian X. Mazelle, Shannon M. Curry   +10 more
wiley   +1 more source

Angular Distribution of Bremsstrahlung Produced by 10-keV and 20-keV Electrons Incident on a Thick Au Target

, 2013
The relative intensities of the thick-target bremsstrahlung produced by 10-keV and 20-keV electrons incident on Au at forward angles ranging from 0 degrees to 25 degrees are compared.
Gonzales, D., Williams, S.
core   +1 more source

Clinical evaluation of two new unshielded and shielded silicon diode detectors in external photon beam radiation therapy: SunSILICON and SunSILICON P

Journal of Applied Clinical Medical Physics, Volume 27, Issue 4, April 2026.
Abstract Background Advanced external photon beam radiotherapy requires dosimetry detectors with high spatial resolution and minimal perturbation effects. Silicon diode detectors are widely used due to their high sensitivity and small sensitive volumes, but fluence perturbation effects and energy dependence can affect performance and depend on detector
Teresa J. Anders, Veronika Flatten, Mohamad Alissa, David Towle, Andy Murray, Ann‐Britt Schönfeld, Erik Alquist, Olivier Evrard, Jeff Hildreth, Ndimofor Chofor, Gerhard Wessing, Charbel Habib, Damian Czarnecki, Andreas A. Schönfeld   +13 more
wiley   +1 more source

New prediction of extragalactic GeV gamma-ray emission from radio lobes of young AGN jets

, 2009
We present a new prediction of GeV $\gamma$-ray emission from radio lobes of young AGN jets. In the previous work of Kino et al. (2007), MeV $\gamma$-ray bremsstrahlung emission was predicted from young cocoons/radio-lobes in the regime of no coolings ...
Asada, Begelman, Begelman, Best, Cotton, Dallacasa, Dreher, Fanti, Ghisellini, Guainazzi, Gugliucci, H. Ito, H. Nagai, Hardcastle, Ito, Kataoka, Kawakatu, Kellermann, Kino, Kino, Lyubarsky, M. Kino, N. Kawakatu, Nagai, O'Dea, O'Dea, Ohira, Orienti, Polatidis, Rawlings, Readhead, Readhead, Reynolds, Shimada, Siemiginowska, Sikora, Snellen, Stanghellini, Stawarz, Svensson, Taylor, Tsuboi, Vink, Wardle   +43 more
core   +1 more source

Evaluation of extrapolation chamber response for surface and buildup dose assessment in radiotherapy photon beams using Monte Carlo simulations

Medical Physics, Volume 53, Issue 4, April 2026.
Abstract Background Surface dose assessment is essential in radiotherapy, but accurately measuring doses in the buildup region of megavoltage beams presents significant challenges. Extrapolation chambers are frequently regarded as the most suitable detectors for this purpose. Purpose To establish under what conditions extrapolation chambers can be used
Cristiano Q. M. Reis, Bryan R. Muir, Patricia Nicolucci, D. W. O. Rogers   +3 more
wiley   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Nonlinearity Matters in Light–Matter Interaction: Multiphoton 3D Lithography

Small Structures, Volume 7, Issue 4, April 2026.
Multiphoton lithography relies on nonlinear energy deposition to initiate polymerization. By quantifying optical nonlinearities in pure and photosensitized SZ2080TM resist, we show that the host resist, alone or interacting with photoinitiators, dominates energy deposition, which can be further controlled by adjusting the laser interaction volume ...
Michalis Stavrou, Efrosyni Pramatioti, Gordon Zyla, Dimitra Ladika, Georgios Skentzos, Maria Farsari, Saulius Juodkazis, Mangirdas Malinauskas, David Gray, Stelios Couris   +9 more
wiley   +1 more source

On the influence of acoustic waves on coherent bremsstrahlung in crystals

, 2003
We investigate the coherent bremsstrahlung by relativistic electrons in a single crystal excited by hypersonic vibrations. The formula for the corresponding differential cross-section is derived in the case of a sinusoidal wave.
A. A. SAHARIAN, A. R. MKRTCHYAN, Akhiezer A. I., Bazylev V. A., L. SH. GRIGORYAN, Ter-Mikaelian M. L., V. V. PARAZIAN   +6 more
core   +1 more source

ULF Wave Modulation of Energetic Electron Precipitation Caused by the Self‐Limiting of Space Radiation: May 2024 Superstorm Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The May 2024 geomagnetic superstorm provided the opportunity to explore how strong wave‐particle interactions affect energetic electron precipitation under intense driving. Using coordinated measurements from a balloon‐borne Timepix‐based X‐ray detector, ground‐based riometers and magnetometers, and Arase satellite observations, we identified ...
L. Olifer, D. Zhou, M. Patel, I. R. Mann, M. K. Hudson, A. W. Degeling, C. O. Heinke, G. R. Sivakoff, A. Kale, S. Kasahara, S. Yokota, K. Keika, T. Hori, T. Mitani, T. Takashima, Y. Kasahara, S. Matsuda, A. Shinbori, A. Matsuoka, M. Teramoto, K. Yamamoto, I. Shinohara, Y. Miyoshi   +22 more
wiley   +1 more source

Photoproduction of $WH$ signal at electron-proton Colliders

, 1994
We present the photoproduction of an intermediate mass Higgs (IMH) boson associated with a $W$ boson at the future electron-proton colliders using bremsstrahlung photon beam or laser backscattered photon beam.
Barger, Baur, Bowser-Chao, Cheung, Ginzburg, Ginzburg, Grindhammer, Gross, Harriman, Hikasa, Kingman Cheung, Telnov   +11 more
core   +2 more sources