Triply Differential Measurements for Positron Impact Ionization of Argon

Mueller, D.; Knudsen, E.; Boadle, Roisin; Armitage, S.; Dorn, Alexander; Buckman, Stephen; Sullivan, James P.

doi:10.1088/1742-6596/635/5/052068

Cited by 2 publications

(2 citation statements)

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“…After applying restrictions, the usable triple coincidence rate in the initial study was reduced to a few counts per hour (Mueller 2016). At the most recent ICPEAC meeting, the ANL collaboration presented preliminary TDCS information for the longitudinal momentum transfer in 190 eV e + -Ar collisions (Mueller et al 2015).…”

Section: Fully Differential Cross Sectionsmentioning

confidence: 99%

“…At UCL, progress has been slow, i.e., installing a COLTRIMS setup has been in progress since 2010 (Kövér et al 2010 but no data have been reported to date. On the positive side, at ANL a collaborative effort to attach a COLTRIMS apparatus to their Surko source has progressed to the stage where very preliminary data were reported at the most recent ICPEAC meeting (Mueller et al 2015) and additional data are currently being analyzed (Mueller 2016). The main difficulties to be overcome are the on-target beam intensity and that for positron impact a time zero signal (which is essential for the data analysis) must be extracted from the data, which is not the case when using more intense electron or ion beams.…”

Section: Future Directionsmentioning

confidence: 99%

See 1 more Smart Citation

Methods and progress in studying inelastic interactions between positrons and atoms

DuBois¹

2016

J. Phys. B: At. Mol. Opt. Phys.

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Progress and methods used in positron based studies of inelastic atomic interactions are traced from the original discovery of the positron to the present. Following a historic overview and introduction, this review will show how new experimental techniques were critical in advancing experimental studies from total or integral cross section measurements to highly differential investigations that are now being performed. The primary emphasis is on ionization of atoms and simple molecules by low-energy (tens to hundreds of eV) positrons and in showing similarities and differences between positron, electron and proton impact data. Selected examples of Ps based studies are also included. Experimental techniques associated with the generation, moderation, and transport of low-energy positron beams plus an extensive reference list and tables summarizing existing experimental studies are provided. Comments with respect to future studies and directions, plus how they might be achieved, are presented.

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Section: Fully Differential Cross Sectionsmentioning

confidence: 99%

Section: Future Directionsmentioning

confidence: 99%