Concept
Gamma ray
Related publications (337)
Measurement of the K+ → π+γγ decay
Alessandro Mapelli, Radoslav Marchevski, Alina Kleimenova
A sample of 3984 candidates of the K+ -> pi(+)gamma gamma decay, with an estimated background of 291 +/- 14 events, was collected by the NA62 experiment at CERN during 2017-2018. In order to describe the observed di-photon mass spectrum, the next-to-leadin ...
Elsevier2024Mountaintop Gamma Ray Observations of Three Terrestrial Gamma‐Ray Flashes at the Säntis Tower, Switzerland With Coincident Radio Waveforms
Marcos Rubinstein, Antonio Sunjerga, Amirhossein Mostajabi
We report on the mountain top observation of three terrestrial gamma-ray flashes (TGFs) that occurred during the summer storm season of 2021. To our knowledge, these are the first TGFs observed in a mountaintop environment and the first published European ...
2024Gamma-ray Spectroscopy in Low-Power Nuclear Research Reactors
Andreas Pautz, Vincent Pierre Lamirand, Oskari Ville Pakari
Gamma-ray spectroscopy is an effective technique for radioactive material characterization, routine inventory verification, nuclear safeguards, health physics, and source search scenarios. Gamma-ray spectrometers typically cannot be operated in the immedia ...
MDPI2024DEMO toroidal field coil fast discharge unit integration studies
Roberto Guarino, Alberto Ferro
The Fast Discharge Units (FDUs) of the Superconducting (SC) Toroidal Field (TF) coils in the European demonstration fusion power plant DEMO warrant the machine integrity over its full lifetime against severe failure events, such as SC coil quenches or any ...
Elsevier Science Sa2024Transport of dust across the Solar System: Constraints on the spatial origin of individual micrometeorites from cosmic-ray exposure
Reto Georg Trappitsch, Xuan Li
The origin of micrometeorites (MMs) from asteroids and comets is well-established, but the relative contribution from these two classes remains poorly resolved. Likewise, determining the precise origin of individual MMs is an open challenge. Here, cosmic-r ...
Royal Soc2024Constraints on the intergalactic magnetic field from Fermi/LAT observations of the 'pair echo' of GRB 221009A
Delayed 'pair-echo' signal from interactions of very-high-energy gamma rays in the intergalactic medium can be used for the detection of the intergalactic magnetic field (IGMF). We used the data of the Fermi/LAT telescope coupled with LHAASO observatory me ...
Edp Sciences S A2024Hadronic nature of high-energy emission from the Galactic ridge
We show that the IceCube observation of the Galactic neutrino-flux component confirms the hint of detection of neutrinos from the Galactic ridge (the inner part of the Milky Way disk within the Galactic longitude IlI < 30(degrees)), previously reported by ...
College Pk2023Power variations in fractional Sobolev spaces for a class of parabolic stochastic PDEs
Robert Dalang, Carsten Hao Ye Chong
We consider a class of parabolic stochastic PDEs on bounded domains D c Rd that includes the stochastic heat equation but with a fractional power gamma of the Laplacian. Viewing the solution as a process with values in a scale of fractional Sobolev spaces ...
INT STATISTICAL INST2023X-ray qualification of hydrogenated amorphous silicon sensors on flexible substrate
Sylvain Dunand, Mikaël Martino, Luca Massimiliano Antognini, Matthew James Large
Hydrogenated amorphous silicon (a-Si:H) is a well known material for its radiation resistance and for the possibility of deposition on flexible substrates like Polyimide (PI), polyethylene terephthalate (PET) or polyethylene naphthalate (PEN). Due to the p ...
IEEE2023Attaining the PeV frontier of the cosmic ray spectrum in space with HERD
The High Energy cosmic-Radiation Detection facility (HERD) is a calorimetric experiment planned to be launched in 2027. It will be operational for at least 10 years on board the China Space Station. With HERD we will measure the energy flux of cosmic proto ...
E D P SCIENCES2023