Results 111 to 120 of about 1,787,908 (323)

Evaluation of the dose reduction effect of crystalline lens exposure in cone‐beam computed tomography with bismuth eye shield for image‐guided radiation therapy: An anthropomorphic phantom study

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract This study aimed to evaluate the dose‐exposure reduction effect of a crystalline lens with a bismuth eye shield using cone‐beam computed tomography (CBCT) for head image‐guided radiation therapy. The ocular surface dose of the head phantom (THRA‐1) is defined as a crystalline lens exposure dose and is measured using a radiophotoluminescence ...
Tatsuya Yoshida, Koji Sasaki, Yoshiyuki Kawasaki, Tomoki Hayakawa, Toshiyuki Kawadai, Takako Shibasaki   +5 more
wiley   +1 more source

Probing the Structural and Electronic Properties of Dirhenium Halide Clusters: A Density Functional Theory Study

Scientific Reports, 2018
Dirhenium halide dianions received considerable attention in past decades due to the unusual metal–metal quadruple bond. The systematic structural evolution of dirhenium halide clusters has not been sufficiently studied and hence is not well-understood ...
Li Huan Zhang, Xin Xin Xia, Wei Guo Sun, Cheng Lu, Xiao Yu Kuang, Bo Le Chen, George Maroulis   +6 more
doaj   +1 more source

Effective Field Theories in Nuclear Particle and Atomic Physics

, 2004
These are the proceedings of the workshop on ``Effective Field Theories in Nuclear, Particle and Atomic Physics'' held at the Physikzentrum Bad Honnef of the Deutsche Physikalische Gesellschaft, Bad Honnef, Germany from December 13 to 17, 2005.
Bijnens, Johan, Meißner, Ulf-G., Wirzba, Andreas   +2 more
core   +1 more source

From 2D to 3D gamma passing rate tolerance and action limits for patient‐specific quality assurance in volumetric‐modulated arc therapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Volumetric modulated arc therapy (VMAT) requires an accurate patient‐specific quality assurance (PSQA) program. In clinical practice, this is usually performed using the γ‐index and the two‐dimensional gamma passing rate (2D %GP). A three‐dimensional (3D) index incorporating the patient anatomy could be more useful for the 3D dose ...
Christos Zarros, George Patatoukas, Nikos Kollaros, Marina Chalkia, Andromachi Kougioumtzopoulou, Vasilios Kouloulias, Kalliopi Platoni   +6 more
wiley   +1 more source

Research investigation directed toward extending the useful range of the electromagnetic spectrum Third quarterly progress report, Jun. 16 - Sep. 15, 1965 [PDF]

Investigations in astronomy, solid state physics, optical masers, atomic physics, and radioactive atoms for electromagnetic ...
Novick, R.
core   +1 more source

Feasibility study of skin dosimetry with TLD sheets for measuring the effect of 3D printed bolus in radiotherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract The thermoluminescence dosimeter (TLD) sheet is a measurement device coated with manganese‐doped LiB3O5 in sheet form. The sheet is 0.2‐mm thick and flexible. Hence, it can fit and be installed on irregular surfaces. The current study aimed to evaluate the feasibility of measuring patient surface doses during radiation therapy using TLD sheets.
Yuya Miyasaka, Mayumi Ichikawa, Takagi Akira, Yoshifumi Yamazawa, Hongbo Chai, Hikaru Souda, Miyu Ishizawa, Hiraku Sato, Takeo Iwai   +8 more
wiley   +1 more source

Laboratory Studies on Absolute n-resolved Charge-exchange Cross Sections and Modeling X-Ray Emissions for Ne8+ Colliding with H2 and He

The Astrophysical Journal
Charge exchange is a predominant process in inelastic collisions in astronomical plasmas, influencing the charge state balance and leading to X-ray emissions when solar wind ions interact with neutral gas in astrophysical environments.
P. F. Ma, H. Yin, B. Ren, T. Meng, J. Wang, Y. Wu, X. Tan, Y. Zhang, Y. Qi, K. Yao, J. Xiao, Y. Zou, B. Tu, B. Wei   +13 more
doaj   +1 more source

Analysis of the atom-number correlation function in a few-atom trap [PDF]

arXiv, 2006
Stochastic properties of loading and loss mechanism in a few atom trap are analyzed. An approximate formula is derived for the atom-number correlation function for the trapped atoms in the limit of reasonably small two-atom loss rate. Validity of the approximate formula is confirmed by numerical simulations.
arxiv  

Atomic Physics and Related Subjects.: Communications to Nature.: Moment of Inertia of Hydrogen from Band Spectra [PDF]

, 1930
Hugh H. Hyman, C. Rulon Jeppesen
openalex   +1 more source

SPARC Collaboration: New Strategy for Storage Ring Physics at FAIR

, 2014
SPARC collaboration at FAIR pursues the worldwide unique research program by utilizing storage ring and trapping facilities for highly-charged heavy ions.
Angela Bräuning-Demian, Dieter Prasuhn, Frank Herfurth, Markus Steck, Michael Lestinsky, null null, Reinhold Schuch, Rudolf Maier, Thomas Stöhlker, Yuri A. Litvinov   +9 more
core   +1 more source