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   Articles with "annihilation" as a keyword



Strategies for High-Performance Solid-State Triplet-Triplet-Annihilation-Based Photon Upconversion.

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recommendations! Published in 2020 at "Advanced materials"

DOI: 10.1002/adma.201908175

Abstract: Photon upconversion via triplet-triplet annihilation (TTA) has achieved high efficiencies in solution and within polymer matrices that support molecular migration systems. It has diverse potential applications including bioimaging, optical sensors, and photovoltaics. To date, however,… read more here.

Keywords: solid state; state; annihilation; tta ... See more keywords
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Constraints on dark matter annihilation from the Event Horizon Telescope observations of M87*

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recommendations! Published in 2022 at "Journal of High Energy Physics"

DOI: 10.1007/jhep04(2022)018

Abstract: Abstract The fast developments of radio astronomy open a new window to explore the properties of Dark Matter (DM). The recent direct imaging of the supermassive black hole (SMBH) at the center of M87 radio… read more here.

Keywords: annihilation; dark matter; event horizon; horizon telescope ... See more keywords

Simplified models of dark matter with a long-lived co-annihilation partner

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recommendations! Published in 2017 at "Journal of High Energy Physics"

DOI: 10.1007/jhep06(2017)041

Abstract: A bstractWe introduce a new set of simplified models to address the effects of 3-point interactions between the dark matter particle, its dark co-annihilation partner, and the Standard Model degree of freedom, which we take… read more here.

Keywords: annihilation; simplified models; partner; matter ... See more keywords

Gravity-mediated dark matter annihilation in the Randall-Sundrum model

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recommendations! Published in 2017 at "Journal of High Energy Physics"

DOI: 10.1007/jhep10(2017)094

Abstract: A bstractObservational evidence for dark matter stems from its gravitational interactions, and as of yet there has been no evidence for dark matter interacting via other means. We examine models where dark matter interactions are… read more here.

Keywords: annihilation; matter; dark matter; randall sundrum ... See more keywords

Semi-inclusive back-to-back production of a hadron pair and a single hadron in e+e− annihilation

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recommendations! Published in 2018 at "Journal of High Energy Physics"

DOI: 10.1007/jhep10(2018)008

Abstract: A bstractInclusive hadron production in e+e− annihilation has long been used to study both single hadron fragmentation functions (FF) and dihadron fragmentation functions (DiFF). In particular, the polarized DiFFs can be accessed in electron-positron annihilation… read more here.

Keywords: annihilation; single hadron; hadron pair; back back ... See more keywords

Regulating Sommerfeld resonances for multi-state systems and higher partial waves

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recommendations! Published in 2024 at "Journal of High Energy Physics"

DOI: 10.1007/jhep12(2025)025

Abstract: Long-range attractive interactions between dark matter particles can significantly enhance their annihilation, particularly at low velocities. This “Sommerfeld enhancement” is typically computed by evaluating the deformation of the two-particle wavefunction due to the long-range potential,… read more here.

Keywords: annihilation; partial waves; range potential; regulating sommerfeld ... See more keywords

Analysis of Effect of Singlet-Triplet Annihilation in a Low-Threshold Optically Pumped Organic Semiconductor Laser

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recommendations! Published in 2017 at "Journal of Electronic Materials"

DOI: 10.1007/s11664-017-5624-4

Abstract: We investigate the impact of optical excitation in a low-threshold organic semiconductor vertical-cavity surface-emitting laser (OVCSEL) to achieve lasing. We study the threshold behavior and the dynamics of the optimized OVCSEL structure when pumped by… read more here.

Keywords: annihilation; singlet triplet; threshold; organic semiconductor ... See more keywords

The role of open-volume defects in the annihilation of antisites in a B2-ordered alloy

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recommendations! Published in 2019 at "Acta Materialia"

DOI: 10.1016/j.actamat.2019.06.037

Abstract: Abstract The atomic arrangement in certain ordered alloys, such as B2–Fe60Al40 determines intrinsic material properties for instance, the saturation magnetization. Here we have investigated the influence of open-volume defects on the atomic ordering process at… read more here.

Keywords: role open; volume defects; annihilation; open volume ... See more keywords

Defect structure transformation during substitution in quadruple perovskite CaCu3-Ti4-Fe2O12 studied by positron annihilation spectroscopy

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recommendations! Published in 2019 at "Ceramics International"

DOI: 10.1016/j.ceramint.2019.06.083

Abstract: Abstract Positron annihilation spectroscopic studies have been performed to investigate the defect structural evolution in polycrystalline CaCu3-xTi4-xFe2xO12 (x = 0.0, 0.1, 0.3, 0.5 and 0.7) cubic perovskite samples. The positron lifetimes, relative intensities and Doppler-broadened annihilation lineshape… read more here.

Keywords: annihilation; spectroscopy; cacu3; structure ... See more keywords
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Annihilation behavior of irradiation defects induced by γ-ray in biphasic tritium breeding materials xLi2TiO3-(1-x) Li4SiO4

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recommendations! Published in 2021 at "Ceramics International"

DOI: 10.1016/j.ceramint.2020.08.150

Abstract: Abstract For the operation of D-T fusion reactor, tritium breeding materials will be adopted to produce tritium. Li2TiO3–Li4SiO4 biphasic breeders are considered as promising breeding materials due to combining the advantages of Li2TiO3 and Li4SiO4.… read more here.

Keywords: annihilation; irradiation; irradiation defects; xli2tio3 li4sio4 ... See more keywords
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Energy production by laser-induced annihilation in ultradense hydrogen H(0)

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recommendations! Published in 2021 at "International Journal of Hydrogen Energy"

DOI: 10.1016/j.ijhydene.2021.01.212

Abstract: Abstract Laser-induced nuclear processes in ultra-dense hydrogen H(0) give ejection of bunches of mesons similar to known baryon annihilation processes. This process was recently described as useful for relativistic interstellar travel (Holmlid and Zeiner-Gundersen 2020)… read more here.

Keywords: annihilation; energy production; hydrogen; process ... See more keywords