Concept
Rayonnement du corps noir
Publications associées (138)
Numerical Study of the Attosecond Free-Electron Laser Pulse Generation in the Soft X-ray Regime at the SwissFEL
Isolated attosecond pulses from an X-ray free-electron laser are in high demand for attosecond science, which enables the probing of electron dynamics by X-ray nonlinear spectroscopy and single-particle imaging.The aim of this thesis is to simulate attosec ...
EPFL2024A generalization of the Hawking black hole area theorem
Hawking's black hole area theorem was proven using the null energy condition (NEC), a pointwise condition violated by quantum fields. The violation of the NEC is usually cited as the reason that black hole evaporation is allowed in the context of semiclass ...
Springer/Plenum Publishers2024Disentangling Thermal from Electronic Contributions in the Spectral Response of Photoexcited Perovskite Materials
Majed Chergui, Thomas Charles Henry Rossi, Malte Oppermann, Lijie Wang
Disentangling electronic and thermal effects in photoexcited perovskite materials is crucial for photovoltaic and optoelectronic applications but remains a challenge due to their intertwined nature in both the time and energy domains. In this study, we emp ...
Washington2024Measuring the electron energy distribution in tokamak plasmas from polarized electron cyclotron radiation
In this doctoral thesis, a promising technique has been used for the measurement of non-thermal electrons in TCV. The technique employs a Vertical viewing ECE to more easily discriminate the radiation according to the energy of the electrons. Successful ...
EPFL2023Radiation Patterns of RF Wireless Devices Implanted in Small Animals: Unexpected Deformations Due to Body Resonance
Anja Skrivervik, Stéphanie Lacour, Zvonimir Sipus, Mingxiang Gao, German Augusto Ramirez Arroyave, Kangling Wu
One challenge in designing RF wireless bioelectronic devices is the impact of the interaction between electromagnetic waves and host body tissues on far-field wireless performance. In this paper, we investigate a peculiar phenomenon of implantable RF wirel ...
2023Maximum likelihood bolometry for ASDEX upgrade experiments
Bolometry is an essential diagnostic for calculating the power balances and for the understanding of different physical aspects of tokamak experiments. The reconstruction method based on the Maximum Likelihood (ML) principle, developed initially for JET, h ...
Bristol2023Identification of the trade-off between speed and efficiency in undulatory swimming using a bio-inspired robot
Auke Ijspeert, Karen Ann J Mulleners, Kamilo Andres Melo Becerra, Alexandros Anastasiadis, Laura Isabel Paez Coy, Eric Daniel Tytell
Anguilliform swimmers, like eels or lampreys, are highly efficient swimmers. Key to understanding their performances is the relationship between the body’s kinematics and resulting swimming speed and efficiency. But, we cannot prescribe kinematics to livin ...
2023Method and setup for light detection and ranging
Tobias Kippenberg, Anton Lukashchuk
A method and a setup for light detection and ranging are disclosed. The setup is configured to carry out the following method: generating signal radiation (S) at multiple signal frequencies (fs) with an optical signal source (1), wherein the signal radiati ...
2023Development of microlens-enhanced SiPMs for a radiation-hard scintillating fibre tracker at LHCb
he LHCb experiment at CERN's Large Hadron Collider (LHC) is currently taking data with a newly developed Scintillating Fibre (SciFi) Tracker read out with multichannel silicon photomultipliers (SiPMs). The innermost fibre modules, exposed to the highest ra ...
EPFL2023Vertical electron cyclotron emission diagnostic on the tokamak à configuration variable
Ambrogio Fasoli, Stefano Coda, Laurie Porte
In this paper, a diagnostic for the measurement of the electron cyclotron emission (ECE) from non-thermal electrons in magnetically confined fusion plasmas is presented. The diagnostic employs a vertical viewing line of sight that allows us to directly inf ...
2023