Results 31 to 40 of about 840,010 (348)

FLASH radiotherapy with carbon ion beams [PDF]

open access: yesMedical Physics, 2021
AbstractFLASH radiotherapy is considered a new potential breakthrough in cancer treatment. Ultra‐high dose rates (>40 Gy/s) have been shown to reduce toxicity in the normal tissue without compromising tumor control, resulting in a widened therapeutic window.
Weber U. A., Scifoni E., Durante M.
openaire   +6 more sources

Quasi-monoenergetic carbon ions generation from a double-layer target driven by extreme laser pulses

open access: yesNew Journal of Physics, 2023
High quality energetic carbon ions produced via laser-plasma have many applications in tumor therapy, fast ignition and warm dense matter generation. However, the beam achieved in current experiments is still limited by either a large energy spread or a ...
Yuqing Wei   +5 more
doaj   +1 more source

Collisionless shock acceleration of quasi-monoenergetic ions in ultra-relativistic regime [PDF]

open access: yes, 2019
Collisionless shock acceleration of carbon ions (C$^{6+}$) is investigated in the ultra-relativistic regime of laser-plasma interaction by accounting for the radiation reaction force and the pair production in particle-in-cell simulations. Both radiation
Bhadoria, Shikha, Kumar, Naveen
core   +3 more sources

Monte Carlo-based Investigation of Absorbed-dose Energy Dependence of Thermoluminescent Dosimeters in Therapeutic Proton and Carbon Ion Beams

open access: yesJournal of Medical Physics
Background: The present study is aimed at calculating relative absorbed-dose energy response correction (R) of commonly used thermoluminescent dosimeters (TLDs) such as LiF, Li2B4O7, and Al2O3 as a function of depth in water for protons (50–250 MeV/n ...
Arghya Chattaraj   +2 more
doaj   +1 more source

Simulations of stable compact proton beam acceleration from a two-ion-species ultrathin foil

open access: yes, 2011
We report stable laser-driven proton beam acceleration from ultrathin foils consisting of two ion species: heavier carbon ions and lighter protons. Multi-dimensional particle-in-cell (PIC) simulations show that the radiation pressure leads to very fast ...
A. Pukhov   +7 more
core   +1 more source

Carbon-doped ZnO: A New Class of Room Temperature Dilute Magnetic Semiconductor [PDF]

open access: yes, 2006
We report magnetism in carbon doped ZnO. Our first-principles calculations based on density functional theory predicted that carbon substitution for oxygen in ZnO results in a magnetic moment of 1.78 $\mu_B$ per carbon.
H. Pan   +10 more
core   +1 more source

Atmospheric CO2 consumption by continental erosion : present-day controls and implications for the last glacial maximum [PDF]

open access: yes, 1998
The export of carbon from land to sea by rivers represents a major link in the global carbon cycle. For all principal carbon forms, the main factors that control the present-day fluxes at the global scale have been determined in order to establish global
Amiotte Suchet, Philippe   +3 more
core   +2 more sources

Determination of carbonate ion by ion chromatography.

open access: yesBUNSEKI KAGAKU, 1996
Determination of carbonate ion by ion chromatography was investigated. The separation was performed on a TSKgel IC-Anion-PWXL (4.6 mm i.d.×35 mm) with boric acid-ethylenediamine buffer. The influence of the eluent pH on the capacity factors of carbonate and some inorganic anions was studied.
Yoshimi HASHIMOTO   +2 more
openaire   +2 more sources

Generation of quasi-monoenergetic protons from thin multi-ion foils by a combination of laser radiation pressure acceleration and shielded Coulomb repulsion [PDF]

open access: yes, 2013
We study theoretically and numerically the acceleration of protons by a combination of laser radiation pressure acceleration and Coulomb repulsion of carbon ions in a multi-ion thin foil made of carbon and hydrogen.
Chen, Shih-Hung   +8 more
core   +1 more source

Application of instruments of nuclear physics to the calculation of theoretical dose distributions in various organs of the human body for beams used in hadrontherapy

open access: yesNukleonika, 2016
The area of interests of nuclear physics are studies of reactions, wherein atomic nuclei of projectile collide with target nuclei. An amount of energy lost by projectile nucleus during its passing through the target is a major issue – it is important to ...
Maliszewska Weronika   +2 more
doaj   +1 more source

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