Results 71 to 80 of about 28,722 (233)

Characterizing diamond detectors for various dose and dose rate measurements in scanned carbon and oxygen beams

Medical Physics, EarlyView.
Abstract Background The emerging FLASH radiotherapy technique employs “Ultra‐High Dose Rate” (UHDR) irradiations and offers the potential to spare normal tissue while maintaining iso‐effective tumor treatment. Given the physical and biological advantages inherent to high “Linear Energy Transfer” (LET) particles, the combination of UHDR and high LET has
Celine Karle, Gianluca Verona‐Rinati, Stephan Brons, Rainer Cee, Stefan Scheloske, Christian Schömers, Rafael Kranzer, Thomas Haberer, Marco Marinelli, Andrea Mairani, Thomas Tessonnier   +10 more
wiley   +1 more source

Characterization of a practically designed plastic scintillation plate dosimeter

Medical Physics, EarlyView.
Abstract Background Advancements in radiotherapy have enabled the use of high‐definition irradiation, leading to more precise and finely adjusted treatments in clinical settings. Nevertheless, the attainment of high resolution, an extensive measurement area, and the repeatability of dose distribution measurements persist as challenges in clinical ...
Takeshi Ohta, Yuki Nozawa, Shingo Ohira, Kanabu Nawa, Hideomi Yamashita, Keiichi Nakagawa   +5 more
wiley   +1 more source

Cherenkov radiation in a photon gas

New Journal of Physics, 2005
It is well-known that a charged particle moving with constant velocity in vacuum does not radiate. In a medium the situation can be different. If the so called Cherenkov condition is satisfied, i.e. the particle velocity exceeds the phase speed in the medium, the particle will radiate.
Lennart Stenflo, Padma Kant Shukla, Gert Brodin, Mattias Marklund   +3 more
openaire   +3 more sources

Resonant Diffusive Radiation in Random Multilayered Systems

, 2005
We have theoretically shown that the yield of diffuse radiation generated by relativistic electrons passing random multilayered systems can be increased when a resonant condition is met.
Anderson, Bazylev, Cherry, Gevorkian, Gevorkian, Gevorkian, Gevorkian, Henke, J. Verhoeven, Kaplan, Knulst, Knulst, Kosobukin, Lastgrader, Rullhusen, Ter-Mikaelian, Yamada, Yuan, Zh.S. Gevorkian   +18 more
core   +1 more source

Transient Cherenkov radiation from an inhomogeneous string excited by an ultrashort laser pulse at superluminal velocity [PDF]

, 2013
An optical response of one-dimensional string made of dipoles with a periodically varying density excited by a spot of light moving along the string at the superluminal (sub-luminal) velocity is theoretically studied.
Arkhipov, M. V., Arkhipov, R., Babushkin, I., Lebedev, M. K., Tolmachev, Yu. A.   +4 more
core   +3 more sources

Clinical implementation of the first Cherenkov imaging system in a community-based hospital

Technical Innovations & Patient Support in Radiation Oncology, 2022
Purpose: To document experiences with one year of clinical implementation of the first Cherenkov imaging system and share the methods that we developed to utilize Cherenkov imaging to improve treatment delivery accuracy in real-time. Methods: A Cherenkov
Erli Chen, Brian W. Pogue, Petr Bruza, Daniel A. Alexander, Nancy L. Andino, Savannah M. Decker, Danielle M. Gaudet, David J. Gladstone, Melinda J. Lake, Steven R. Levene, Jennifer L. Michelson, Hila L. Robinson, Debra N. Stallings, John E. Starkey, Lesley A. Jarvis   +14 more
doaj  

A Study on the Lateral Distribution of Cherenkov Radiation of Extensive Air Showers at High Observation Levels [PDF]

Iranian Journal of Astronomy and Astrophysics
By using CORSIKA code, for simulation of extensive air showers for observation levels at different altitudes, the variation of the lateral distribution of Cherenkov radiation of showers with altitude is studied.
Davoud Purmohammad
doaj   +1 more source

Treatment planning evolution: Comparing approaches in photodynamic and radiation therapies

Photochemistry and Photobiology, EarlyView.
Oncological therapy based on radiation therapy (RT) is well‐developed, with widely accepted therapeutic dose concepts based on its mechanisms of action, which are applied to personalized treatment planning using sophisticated programs and tools.
Tina Saeidi, Azin Mirzajavadkhan, Lothar Lilge   +2 more
wiley   +1 more source

Fine structure of Vavilov-Cherenkov radiation near the Cherenkov threshold

, 1999
We analyze the Vavilov-Cherenkov radiation (VCR) in a dispersive nontransparent dielectric air-like medium both below and above the Cherenkov threshold, in the framework of classical electrodynamics.
A. Hrmo, A.A. Tyapkin, B.M. Bolotovskii, D.K. Aitken, G. N. Afanasiev, G.N. Afanasiev, G.N. Afanasiev, G.N. Afanasiev, G.N. Afanasiev, G.N. Afanasiev, G.N. Afanasiev, G.N. Afanasiev, G.N. Afanasiev, G.N. Afanasiev, I.E. Tamm, I.E. Tamm, I.I. Abbasov, I.I. Abbasov, I.I. Abbasov, J. Ruzicka, J.D. Lawson, J.D. Lawson, J.F. Janni, P.A. Cherenkov, S.I. Vavilov, V. G. Kartavenko, V. P. Zrelov, V.L. Ginzburg, V.L. Ginzburg, V.P. Zrelov, V.P. Zrelov, V.P. Zrelov   +31 more
core   +1 more source

Signal Characteristics from Electromagnetic Cascades in Ice [PDF]

, 2001
We investigate the development of electromagnetic cascades in ice using a GEANT Monte Carlo simulation. We examine the Cherenkov pulse that is generated by the charge excess that develops and propagates with the shower.
Besson, David Z., McKay, Douglas W., Razzaque, Soebur, Seunarine, Surujhdeo   +3 more
core   +3 more sources