In a new study published in EPJ D, researchers have clearly identified particular areas where discrepancies arise between theoretical and experimental measurements of helium ionization by an impacting ...

The single ionization dynamics of helium by fast ions presents a pivotal area of study in atomic collision physics, offering profound insights into the fundamental interactions between charged ...

Discrepancies exist between the many published measurements of W̄, the average energy to produce an ion pair for helium. Since results for other gases have been relatively consistent, the cause of the ...

A galacticheat wave 11 billion years ago unleashed fierce blasts of radiation thataltered how some galaxies formed, a new study finds. During thisperiod of universal warming ? which astronomers ...

Entangled electrons Illustration depicting an atom (green nucleus with a white electron cloud) that is hit by a laser pulse (red). One electron is ripped out of the atom (black sphere on the right) ...

Monster galaxies with supermassive black hole hearts released fierce blasts that superheated the early universe, new Hubble observations suggest. The scorching conditions also stunted the growth of ...

Mass spectrometers can now be operated at pressures in the proximity of those applied in most plasma processing systems due to the availability of particle detectors capable of being used at pressures ...

Physicists propose a dark matter detector that would use superfluid helium to explore mass ranges for dark matter particles thousands of times smaller than current large-scale experiments. Physicists ...

Advanced mathematical analysis of the ionisation of a helium atom by an impacting proton has revealed where discrepancies arise between experiments and existing theoretical calculations of the process ...

The availability of particle detectors which can be used at up to 4x10-4 Torr pressures has made it possible to use mass spectrometers at pressures close to those used in several plasma processing ...