Results 21 to 30 of about 444,397 (341)

Few Body Effects in the Electron and Positron Impact Ionization of Atoms

open access: yesAtoms, 2021
Triple differential cross sections (TDCS) are presented for the electron and positron impact ionization of inert gas atoms in a range of energy sharing geometries where a number of significant few body effects compete to define the shape of the TDCS ...
R.I. Campeanu, Colm T. Whelan
doaj   +1 more source

Accuracy of patient dose estimation in cone beam computed tomography in breast irradiation by size‐specific dose estimates with position correction

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract This study aims to investigate the effects of the position correction of size‐specific dose estimates (SSDE) on patient dose estimation in cone beam computed tomography (CBCT). The relationship between the phantom position and absorbed dose in the right breast was studied using optically stimulated luminescence dosimeters and a simulated human
Hiroyuki Ueno   +3 more
wiley   +1 more source

Ionizing and Non-ionizing Radiation [PDF]

open access: yes, 2020
This chapter describes ionizing radiation and non-ionizing radiation, ways to measure it in the environment, describes the potential health effects from chronic and acute exposures as well as a discussion addressing pregnancy concerns. Background radiation from both sources are described in relation to occupational or public exposure limits and how ...
openaire   +3 more sources

Estimation and analysis of the influence of ionizing radiation on the operation of nanosatellite onboard radio electronic equipment

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2021
The paper presents the results of a calculation aimed to study the influence of ionizing, bremsstrahlung radiation on the operation of a nanosatellite obtained during the implementation of the project 0777-2020-0018 in 2020. A comparative analysis of the
S. V. Tsaplin, S. A. Bolychev
doaj   +1 more source

Evaluation of patient doses for routine digital radiography procedures toward establishing an institutional diagnostic reference levels: A case study in Sri Lanka

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract The present study was conducted as part of a comprehensive work to establish National Diagnostic Reference Levels (NDRLs) in Sri Lanka for the first time. DRLs can be used as an effective optimization tool for identifying unusually high or low patient doses during X‐ray examinations.
Sachith Welarathna   +3 more
wiley   +1 more source

Distortion of the Ionization Cross Section of He by the Coherence Properties of a C6+ Beam

open access: yesAtoms, 2019
We analyze the influence of the coherence of the projectile’s beam in scattering phenomena. We focus our study in the ionization of He by C 6 + projectiles at 100 MeV/amu.
Francisco Navarrete   +2 more
doaj   +1 more source

The ionization of the diffuse ionized gas

open access: yesThe Astrophysical Journal, 1994
The diffuse ionized gas (DIG), responsible for producing the faint but pervasive H(sub alpha), requires 15% of the power of all Galactic O stars for its ionization. No other source of ionization seems practical. The spectrum is strong in low stages of ionization (N II, SII), weak in (O III), and very weak in (O I) lambda 6300, at least in one well ...
John S. Mathis, H. Domgorgen
openaire   +2 more sources

Monitoring of the Pesticide Droplet Deposition with a Novel Capacitance Sensor

open access: yesSensors, 2019
Rapid detection of spraying deposit can contribute to the precision application of plant protection products. In this study, a novel capacitor sensor system was implemented for measuring the spray deposit immediately after herbicide application ...
Pei Wang   +4 more
doaj   +1 more source

Differential Studies of Argon Particle and Antiparticle Interactions: Present Status and Future Possibilities

open access: yesAtoms, 2023
Although the comparison of fully differential ionization data for particle and antiparticle impact provides the ultimate tests of theoretical models, only very low antiparticle beam intensities are available. Hence, few experiments of this type have been
Robert D. DuBois, Károly Tőkési
doaj   +1 more source

Anisotropic field ionization in nano-clusters mediated by Brunel-electron driven plasma waves [PDF]

open access: yes, 2023
Ionization is one of the most fundamental processes in intense laser-matter interaction. It is extremely efficient for clusters in laser fields and often leads to surprisingly high charge states at moderate laser intensities. Here we reveal a novel ionization mechanism in laser-cluster interaction through particle-in-cell simulations.
arxiv   +1 more source

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