Results 71 to 80 of about 1,774,251 (388)

Coupled-Channel Analysis of the Process γγπ0π0

open access: yesParticles, 2022
We study the process γγ→π0π0 involving the principal mechanisms, the structure of its cross section and the role of individual isoscalar-tensor resonances in the saturation of its energy spectrum.
Yury S. Surovtsev   +5 more
doaj   +1 more source

Full Quantum Analysis of Two-Photon Absorption Using Two-Photon Wavefunction: Comparison with One-Photon Absorption

open access: yes, 2009
For dissipation-free photon-photon interaction at the single photon level, we analyze one-photon transition and two-photon transition induced by photon pairs in three-level atoms using two-photon wavefunctions.
Agarwal G. S.   +19 more
core   +1 more source

Single-photon avalanche diode imagers in biophotonics: review and outlook

open access: yesLight: Science & Applications, 2019
Single-photon avalanche diode (SPAD) arrays are solid-state detectors that offer imaging capabilities at the level of individual photons, with unparalleled photon counting and time-resolved performance.
C. Bruschini   +4 more
semanticscholar   +1 more source

Power-effective integral thermoelectric solar radiation converter

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2020
Aim. This article is devoted to the conversion of solar radiation into electricity using the joint effect of several methods, which complement each other by transforming the disadvantages of one method into the advantages of another method. Methods. Heat
S. M. Gadzhieva   +2 more
doaj   +1 more source

Photon Upconversion in Small Molecules

open access: yesMolecules, 2022
Upconversion (UC) is a process that describes the emission of shorter-wavelength light compared to that of the excitation source. Thus, UC is also referred to as anti-Stokes emission because the excitation wavelength is longer than the emission ...
Dorota Bartusik-Aebisher   +5 more
doaj   +1 more source

12-Photon Entanglement and Scalable Scattershot Boson Sampling with Optimal Entangled-Photon Pairs from Parametric Down-Conversion. [PDF]

open access: yesPhysical Review Letters, 2018
Entangled-photon sources with simultaneously near-unity heralding efficiency and indistinguishability are the fundamental elements for scalable photonic quantum technologies.
Han-Sen Zhong   +19 more
semanticscholar   +1 more source

RR photons [PDF]

open access: yesJournal of High Energy Physics, 2011
68 pages, 2 figures, 7 tables; v2: minor typos corrected, references ...
Cámara, Pablo, G.   +2 more
openaire   +3 more sources

Mitochondrial fatty acid oxidation is stimulated by red light irradiation

open access: yesFEBS Letters, EarlyView.
Light at different wavelengths has distinct effects on keratinocyte viability and metabolism. UVA light abrogates metabolic fluxes. Blue and green light have no effect on metabolic fluxes, while red light enhanced oxidative phosphorylation by promoting fatty acid oxidation. Keratinocytes are the primary constituents of sunlight‐exposed epidermis.
Manuel Alejandro Herrera   +4 more
wiley   +1 more source

Particle radiotherapy for breast cancer

open access: yesFrontiers in Oncology, 2023
Breast cancer is the most common malignant tumor in female patients. Along with surgery, radiotherapy is one of the most commonly prescribed treatments for breast cancer.
Hanguang Ruan   +8 more
doaj   +1 more source

PENELOPE 2018: A code system for Monte Carlo simulation of electron and photon transport

open access: yesPENELOPE: A code system for Monte Carlo simulation of electron and photon transport, 2019
The computer code system penelope (version 2018) performs Monte Carlo simulation of coupled electron-photon transport in arbitrary materials for a wide energy range, from a few hundred eV to about 1 GeV.

semanticscholar   +1 more source

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