We discuss the design of and initial results from an experiment in space-charge dominated beam dynamics which explores a new regime of high-brightness electron beam generation at the SPARC (located at INFN-LNF, Frascati) photoinjector. The scheme under study employs the natural tendency in intense electron beams to configure themselves to produce a uniform density, giving a nearly ideal beam fr...

Impedance measurements on Mg-doped alumina ceramics, over the temperature range 400−910 °C, showed a combination of oxide ion conductivity and p-type electronic conductivity, depending oxygen partial pressure. The is attributed to vacancies, introduced as charge compensation for Mg dopant. hole creation under-bonded ions dominant in air at high temperatures. In samples co-doped with Si, impedan...

AIM To explore the change in the diagnosis of posttraumatic stress disorder (PTSD) related to the implementation of the new national regulation on compensation-seeking by war veterans in Croatia. METHODS The study included 225 compensation-seeking war veterans who were psychiatrically assessed and diagnosed on three different occasions. The first diagnosis was made by a local psychiatrist whe...

Charge transport near the Dirac point (DP) was investigated in graphene using ferroelectric (FE) gating temperature range of 300 < T 350 K. We observed that conductivity (σ) DP had a positive gradient switched to negative with increasing temperature. The switch shifted higher temperatures and gradually weakened upon moving away from DP. Impurity charge compensation via polarization FE to...