Progress towards a positron reaction microscope

Progress Towards A Practical Multicell Positron Trap

Described here is progress in an experimental program to develop a 21 cell multicell trap for the accumulation and storage of ~ 10 positrons. The basic architecture is an arrangement of multiple Penning-Malmberg (PM) trapped plasmas (i.e., cells) arranged in parallel in a common vacuum system and magnetic field. Experiments are described that are intended to address several key issues, includin...

First image from a positron reemission microscope.

We report in this note that we have taken the first images (one of which is shown below) using a Positron Reemission Microscope (PRM) i.e., a microscope based on the imaging of positrons (e+) reemitted with a few eV energy from a target. Some of the contrasts which appear in the PRM are totally different from the recently demonstrated Transmission Positron Microscope' and also from those presen...

Progress towards a Leishmania vaccine.

Leishmaniasis is a vector-born protozoan disease. Approximately 12 million individuals are affected worldwide with an estimated annual incidence of 1.5-2 million. Two clinical manifestations are recognized, cutaneous, and visceral, both of which are common in the Middle East. In both forms, infection is chronic, with potential deformities, persistence following cure, and lifelong risk of reacti...

Effective Coverage as a New Metric for Monitoring Progress towards Universal Health Coverage

New results from the GSI REACTION-MICROSCOPE

After many years of intense research the dynamical response of quantum-mechanical many-particle systems perturbed by an external time dependent force still remains as one the most fundamental and challenging problems in physics. Among them the three-body Coulomb problem represents the most prominent example. It can be studied in great detail in atomic collisions and ionization of simple atoms b...