Results 51 to 60 of about 791,711 (328)

Compact broadband high-resolution Compton spectroscopy for laser-driven high-flux gamma rays

open access: yesMatter and Radiation at Extremes, 2021
A compact broadband Compton spectrometer with high spectral resolution has been designed to detect spectra of laser-driven high-flux gamma rays.
Zhen-Chi Zhang   +6 more
doaj   +1 more source

Gamma‐ray burst studies by COMPTEL during its first year of operation [PDF]

open access: yes, 1993
During the first year of Compton GRO operations, more than 20 cosmic gamma‐ray burst‐detected by the BATSE instrument ‐ occurred inside the 1 sr field of view of the imaging gamma‐ray telescope COMPTEL.
Bennett, K   +18 more
core   +2 more sources

The cosmology of sub-MeV dark matter [PDF]

open access: yes, 2017
A bstractLight dark matter is a compelling experimental target in light of stringent constraints on heavier WIMPs. However, for a sub-MeV WIMP, the universe is sufficiently well understood at temperatures below 10 MeV that there is no room for it to be a
D. Green, S. Rajendran
semanticscholar   +1 more source

THE SPECTRUM OF ISOTROPIC DIFFUSE GAMMA-RAY EMISSION BETWEEN 100 MeV AND 820 GeV [PDF]

open access: yesAstrophysical Journal, 2014
The γ-ray sky can be decomposed into individually detected sources, diffuse emission attributed to the interactions of Galactic cosmic rays with gas and radiation fields, and a residual all-sky emission component commonly called the isotropic diffuse γ ...
T. A. C. M. Ackermann   +143 more
semanticscholar   +1 more source

Scalar and vector self-energies of heavy baryons in nuclear medium

open access: yes, 2017
The in-medium sum rules are employed to calculate the shifts in the mass and residue as well as the scalar and vector self-energies of the heavy $\Lambda_Q, \Sigma_Q$ and $\Xi_Q$ baryons, with Q being $b$ or $c$ quark.
Azizi, K., Er, N., Sundu, H.
core   +1 more source

Production of Highly Polarized Positrons Using Polarized Electrons at MeV Energies. [PDF]

open access: yesPhysical Review Letters, 2016
The Polarized Electrons for Polarized Positrons experiment at the injector of the Continuous Electron Beam Accelerator Facility has demonstrated for the first time the efficient transfer of polarization from electrons to positrons produced by the ...
D. Abbott   +64 more
semanticscholar   +1 more source

Diatom-Specific Oligosaccharide and Polysaccharide Structures Help to Unravel Biosynthetic Capabilities in Diatoms

open access: yesMarine Drugs, 2015
Diatoms are marine organisms that represent one of the most important sources of biomass in the ocean, accounting for about 40% of marine primary production, and in the biosphere, contributing up to 20% of global CO2 fixation.
Bruno Gügi   +5 more
doaj   +1 more source

MeV electron acceleration at 1  kHz with <10  mJ laser pulses. [PDF]

open access: yesOptics Letters, 2016
We demonstrate laser-driven acceleration of electrons to MeV-scale energies at 1 kHz repetition rate using 1  MeV energy for both He and H2 gas jets.
F. Salehi   +8 more
semanticscholar   +1 more source

Partial wave analysiss of pbar-p -> piminus-piplus, pizero-pizero, eta-eta and eta-etaprime

open access: yes, 2011
A partial wave analysis is presented of Crystal Barrel data on pbar-p -> pizero-pizero, eta-eta and eta-etaprime from 600 to 1940 MeV/c, combined with earlier data on d\sigma /d\Omega and P for pbar-p->piminus-piplus.
A. Hasan   +45 more
core   +1 more source

Strange quark mass from e+e- revisited and present status of light quark masses [PDF]

open access: yes, 2005
We reconsider the determinations of the strange quark mass m_s from e+e- into hadrons data using a new combination of FESR and revisiting the existing tau-like sum rules by including non-resonant contributions to the spectral functions.
M. Gockeler   +8 more
core   +3 more sources

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