Results 61 to 70 of about 154,479 (312)
AIP Advances, 2019 The compression behavior and high-pressure strength of alpha silicon nitride (α-Si3N4) at pressures of up to 60 GPa are studied using synchrotron radiation powder diffraction, complemented with first-principles calculations.
Mingli Jiang +10 more
doaj +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose To generate high‐quality stereotactic radiosurgery (SRS) plans for single cranial lesions using 4Pi planning technique and compare these to our clinical “status quo” plans. Methods Eighteen vestibular schwannoma (VS) patients previously planned with Varian Eclipse RapidArc and treated on a Varian TrueBeam using 6FFF MV photon beams ...
Ganesh Narayanasamy +4 more
wiley +1 more source
Energy dependence of the GAFCHROMIC LD‐V1 in the diagnostic radiographic modalities
Journal of Applied Clinical Medical Physics, EarlyView.Abstract The GAFCHROMIC LD‐V1 radiochromic film is widely used in dosimetry because it can provide high‐resolution two‐dimensional dose distributions without processing. This study aimed to evaluate the response characteristics at different effective energies, from the low‐energy range of mammography to the high‐energy range of computed tomography. Net
Tatsuhiro Gotanda +9 more
wiley +1 more source
Long‐term stability analysis of beam shape in a robotic radiosurgery system
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study aimed to investigate the long‐term stability of CyberKnife beam profile parameters and assess their compliance with existing quality assurance (QA) guidelines. We evaluated beam profiles in both standard and diagonal planes over 3.5 years post‐installation to detect potential issues and ensure consistent beam quality.
Ryoichi Hinoto +4 more
wiley +1 more source
Applied Surface Science Advances, 2023 The optical and surface morphological properties of thin films are profoundly influenced by the deposition technique and the various process parameters employed. In present work, several tantalum penta oxide thin films have been fabricated using reactive
R.B. Tokas +5 more
doaj
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose The aim of this work was to report on the optimization, commissioning, and validation of a beam model using a commercial independent dose verification software RadCalc version 7.2 (Lifeline Software Inc, Tyler, TX, USA), along with 4 years of experience employing RadCalc for offline and online monitor unit (MU) verification on the ...
Urszula Jelen +3 more
wiley +1 more source
Sensitivity to sterile neutrino mixing using reactor antineutrinos
European Physical Journal C: Particles and Fields, 2019 The reactor antineutrinos are used for the precise measurement of oscillation parameters in the 3-neutrino model, and also used to investigate active-sterile neutrino mixing sensitivity in the $$3+1$$ 3+1 neutrino framework. In the present work, we study
S. P. Behera, D. K. Mishra, L. M. Pant
doaj +1 more source
Atomic physics Shaping atoms in optical lattices [PDF]
Nature, 1997 Carefully crossed laser beams can hold cool atoms in a lattice, sitting at the point of constructive interference between the beams, one wavelength apart. Because they are under such precise external control, these optical lattices allow some textbook solid-state physics phenomena to be observed cleanly.
openaire +2 more sources
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose Stereotactic radiotherapy (SRT) is a highly effective treatment with precision for small, localized lesions. Proton therapy, characterized by the Bragg peak, offers superior dose conformity compared to photon‐based approaches. However, challenges remain in minimizing lateral penumbra and optimizing dose delivery, particularly for small
Chen‐Yu Chou +3 more
wiley +1 more source