HAL : Dernières publications

• [hal-04557966] Multiplicity of prompt fission neutron in the $^{239}$Pu(n,f) reaction and its energy dependence
  Accurate multiplicities of prompt fission neutrons emitted in neutron-induced fission on a large energy range are essential for fundamental and applied nuclear physics. Measuring them to high precision for radioactive fissioning nuclides is, however, an experimental challenge. In this work, we extract the average prompt-neutron multiplicity emitted in the 239 Pu (n, f) reaction as […]
• [hal-04557838] Direct Experimental Constraints on the Spatial Extent of a Neutrino Wavepacket
  Despite their high relative abundance in our Universe, neutrinos are the least understood fundamental particles of nature. They also provide a unique system to study quantum coherence in fundamental systems due to their extremely weak interaction probabilities. The quantum properties of neutrinos emitted in experimentally relevant sources are virtually unknown and theoretical predictions for the […]
• [hal-04557495] Search for Neutrino Emission from GRB 221009A using the KM3NeT ARCA and ORCA detectors
  Gamma-ray bursts are promising candidate sources of high-energy astrophysical neutrinos. The recent GRB 221009A event, identified as the brightest gamma-ray burst ever detected, provides a unique opportunity to investigate hadronic emissions involving neutrinos. The KM3NeT undersea neutrino detectors participated in the worldwide follow-up effort triggered by the event, searching for neutrino events. In this letter, […]
• [hal-04556493] Study of (n,α) reactions of interest for nuclear reactors: the case of $^{19}$F(n,α)$^{16}$N with SCALP detector
  The 19 F(n,α)16 N cross section is of great interest for the development of the next generation IV reactors that could potentially use molten fluoride salts. Significant differences (up to a factor of 3) have been observed for this nucleus regarding the (n,α) channel. In view of improving our knowledge on this (n,α) reactions, the […]
• [hal-04555996] Ultralight vector dark matter search using data from the KAGRA O3GK run
  Among the various candidates for dark matter (DM), ultralight vector DM can be probed by laser interferometric gravitational wave detectors through the measurement of oscillating length changes in the arm cavities. In this context, KAGRA has a unique feature due to differing compositions of its mirrors, enhancing the signal of vector DM in the length […]