Experiments using proton beams at high luminosity colliders and fixed target facilities provide impressive sensitivity to new light weakly coupled degrees of freedom. With these experiments in mind, we revisit the production dark vectors scalars via bremsstrahlung, making use a model that describes underlying nucleon scattering cross-section forward direction due pomeron exchange. We compare re...

Abstract Relativistic electrons generated by the interaction of petawatt-class short laser pulses with solid targets can be used to generate bright x-rays via bremsstrahlung. The efficiency energy transfer into these depends on multiple parameters including focused intensity and pre-plasma level. This paper reports experimental results from a high glass at maximum 10 19 W cm ?2 . In-situ measur...