Alonso, AM;
Gurung, L;
Sukra, BAD;
Hogan, SD;
Cassidy, DB;
(2018)
State-selective electric-field ionization of Rydberg positronium.
Physical Review A
, 98
(5)
, Article 053417. 10.1103/PhysRevA.98.053417.
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Abstract
We report experiments in which positronium (Ps) atoms, optically excited to Rydberg states with principal quantum numbers n in the range 18–25, were selectively ionized by both static and pulsed electric fields. The experiments were modeled using Monte Carlo simulations that include tunnel ionization rates calculated for hydrogen and scaled by the Ps reduced mass. Our measurements exhibit a small disagreement with the calculated tunnel ionization rates. Despite this we show that the electric fields in which different Ps states are ionized are sufficiently separated to allow selective field-ionization methods to be used in typical experimental conditions.
| Type: | Article |
|---|---|
| Title: | State-selective electric-field ionization of Rydberg positronium |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.98.053417 |
| Publisher version: | https://doi.org/10.1103/PhysRevA.98.053417 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10063544 |
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