Results 31 to 40 of about 791,711 (328)
He huaxue yu fangshe huaxue, 2023 Fission product yields are fundamental nuclear data for nuclear energy applications and nuclear physics research. In this work, HPGe γ spectrometric technique is applied to absolutely measure the mass distributions from 0.57, 1.0 MeV and 1.5 MeV neutron ...
REN Si-xi +8 more
doaj +1 more source
The Structure and Heat Dependence of Silicon Spreading Resistance Temperature Sensors
Active and Passive Electronic Components, 1989 The construction method of the sensor SRTS with two roundshaped diffusion layers is given. The effect of geometry on the sensor resistance is determined theoretically. An approximating method is given to determine the temperature dependence of the sensor
Gy. Pásztor, J. Berkecz, N. M. Ficza
doaj +1 more source
European Physical Journal C: Particles and Fields, 2023 The full-heavy tetraquarks $$cc{\bar{c}}{\bar{b}}$$ c c c ¯ b ¯ and $$bb{\bar{b}}{\bar{c}}$$ b b b ¯ c ¯ are systematically investigated within a quark model. The meson–meson structure, diquark–antidiquark structure and K-structure are considered in this
Jing Hu, Bing-Ran He, Jia-Lun Ping
doaj +1 more source
Skyrme-force time-dependent Hartree-Fock calculations with axial symmetry [PDF]
, 1981 We discuss axially symmetric time-dependent Hartree-Fock calculations using a finite-range modification of the Skyrme energy functional. The finite-difference forms of the coordinate-space time-dependent Hartree-Fock equations, the method of time ...
Davies, K. T. R., Koonin, S. E.
core +2 more sources
Journal de Physique, 1963 L'étude de la diffusion inélastique des neutrons de 14 MeV sur le carbone par une méthode de temps de vol, permet de donner les valeurs de la section efficace différentielle, pour les niveaux excités de 4,43 MeV, 7,66 MeV, 9,6 MeV et 10,1 MeV. L'allure de la variation de ces sections efficaces différentielles, en fonction de l'angle de diffusion ...
Roturier, J. +3 more
openaire +2 more sources
Prospects for indirect dark matter searches with MeV photons [PDF]
, 2017 Over the past decade, extensive studies have been undertaken to search for photon signals from dark matter annihilation or decay for dark matter particle masses above ∼1 GeV.
R. Bartels, D. Gaggero, C. Weniger
semanticscholar +1 more source
Thermal Dark Matter Below a MeV. [PDF]
Physical Review Letters, 2017 We consider a class of models in which thermal dark matter is lighter than a MeV. If dark matter thermalizes with the standard model below the temperature of neutrino-photon decoupling, equilibration and freeze-out cool and heat the standard model bath ...
A. Berlin, N. Blinov
semanticscholar +1 more source
Direct sequencing of measles virus complete genomes in the midst of a large-scale outbreak.
PLoS ONE, 2021 Measles outbreaks escalated globally despite worldwide elimination efforts. Molecular epidemiological investigations utilizing partial measles virus (MeV) genomes are challenged by reduction in global genotypes and low evolutionary rates.
Efrat Bucris +6 more
doaj +1 more source
e-ASTROGAM: a space mission for MeV-GeV gamma-ray astrophysics
Journal of Physics: Conference Series, 2019 e-ASTROGAM is an observatory space mission dedicated to the study of the gamma radiation in the range from 0.3 MeV to 3 GeV. The detector is composed by a Silicon tracker, a calorimeter, and an anticoincidence system.
R. Rando, A. De Angelis, M. Mallamaci
semanticscholar +1 more source
MeV dark matter complementarity and the dark photon portal [PDF]
, 2018 We discuss the phenomenology of an MeV-scale Dirac fermion coupled to the Standard Model through a dark photon with kinetic mixing with the electromagnetic field.
Maíra Dutra +5 more
semanticscholar +1 more source