Results 21 to 30 of about 1,774,251 (388)
Dark photon limits: A handbook [PDF]
Physical Review D, 2021 The dark photon is a massive hypothetical particle that interacts with the Standard Model by kinetically mixing with the visible photon. For small values of the mixing parameter, dark photons can evade cosmological bounds to be a viable dark matter ...
A. Caputo +3 more
semanticscholar +1 more source
Photonics, 2023 Time-correlated single-photon counting (TCSPC) is a powerful technique for time-resolved measurement of fast and weak light signals used in a variety of scientific fields, including biology, medicine, and quantum cryptography.
Andrea Giudici +3 more
doaj +1 more source
Studies on neutron and photon kerma parameters for human body organs [PDF]
Nuclear Technology and Radiation Protection, 2016 A study on neutron kerma factors and photon air-kerma for human organs is presented for neutron energy range 2.53×10-8 MeV to 29 MeV and photon energy range 1 keV to 20 MeV.
Singh Vishvanath P. +2 more
doaj +1 more source
Electron hole capture centers in an irradiated K2SO4-Cu crystal
Eurasian Journal of Physics and Functional Materials, 2021 The methods of vacuum ultraviolet and thermal activation spectroscopy were used to measure the excitation spectra of impurity radiation in the fundamental absorption band of K2SO4-Cu crystals at 15 K and 300 K.
T. N. Nurakhmetov +8 more
doaj +1 more source
Electron and photon performance measurements with the ATLAS detector using the 2015–2017 LHC proton-proton collision data [PDF]
Journal of Instrumentation, 2019 This paper describes the reconstruction of electrons and photons with the ATLAS detector, employed for measurements and searches exploiting the complete LHC Run 2 dataset.
Atlas Collaboration
semanticscholar +1 more source
A semiclassical approach reproducing asymptotically the Heitler formula for atomic photoionization
Учёные записки Казанского университета: Серия Физико-математические науки, 2020 The wave-corpuscle method for description of atomic photoionization by a flux of photons in the visible and X-ray range was developed and applied. Using the calculated photoionization probability in the asymptotics, we obtained the desired approximate ...
A.M. Shaimardanov +2 more
doaj +1 more source
Superconducting qubit to optical photon transduction
Nature, 2020 Conversion of electrical and optical signals lies at the foundation of the global internet. Such converters are used to extend the reach of long-haul fibre-optic communication systems and within data centres for high-speed optical networking of computers.
M. Mirhosseini +3 more
semanticscholar +1 more source
A solid-state source of strongly entangled photon pairs with high brightness and indistinguishability [PDF]
Nature Nanotechnology, 2019 The generation of high-quality entangled photon pairs has been a long-sought goal in modern quantum communication and computation. So far, the most widely used entangled photon pairs have been generated from spontaneous parametric down-conversion (SPDC),
Jin Liu +10 more
semanticscholar +1 more source
Dark matter and dark energy denote the gravitation of the expanding universe
Frontiers in Physics, 2022 We reason that it is the gravitation of all ordinary matter, extending from the dense distant past to the sparse present, rather than dark matter, that shows up in galaxy rotation and velocity dispersion.
Arto Annila, Mårten Wikström
doaj +1 more source
Towards optimal single-photon sources from polarized microcavities [PDF]
Nature Photonics, 2019 An optimal single-photon source should deterministically deliver one, and only one, photon at a time, with no trade-off between the source’s efficiency and the photon indistinguishability.
Hui Wang +23 more
semanticscholar +1 more source