Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Experimental and Theoretical Physics

Dependence of the probability for Penning ionization on the relative spin orientation of the colliding atoms

A. I. Okunevich

Published Mar 1, 1976• 0 citations
OpenAlex

Related papers

Spin-polarized Penning Ionizing Collisions at Ultra-low Temperature

Chad Orzel, Uwe Sterr, M. Walhout +1 more

APS•Apr 1, 1997•0 citations

Spin-polarized Penning Ionizing Collisions At Ultralow Temperatures

Chad Orzel, Uwe Sterr, M. Walhout +1 more

Quantum Electronics and Laser Science Conference•Jan 1, 1997•0 citations

Cross sections of Penning ionization for Rydberg atoms

M. Zaharov, Nikolai N. Bezuglov, A. N. Klucharev +6 more

•Jan 1, 2009•0 citations

Penning Ionization in Collision of Fast Unexcited Rb Atoms with Ar Atoms

Yu. F. Bydin, Vladimir I. Ogurtsov, Vladimir S. Sirazetdinov

ZhETF Pisma Redaktsiiu•Apr 1, 1971•0 citations

Effect of the orientation of Rydberg atoms on their collisional ionization cross section

Akilesh Venkatesh, F. Robicheaux

Collisional ionization between two Rydberg atoms in relative motion is examined. A classical trajectory Monte Carlo method is used to determine the cross sections associated with Penning ionization. The dependence of the ionization cross section on the magnitude and the direction of orbital angular momentum of the electrons and the direction of the Laplace-Runge-Lenz vector of the electrons is studied. For a given magnitude of angular momentum, there can exist a difference of a factor of up to $\ensuremath{\sim}2.5$ in the ionization cross section between the orientations with the highest and the lowest ionization cross section. The case of exchange ionization is examined and its dependence on the magnitude of angular momentum is studied.

arXiv:2004.01390•Physical Review A•Sep 24, 2020•3 citations

Sub-Kelvin Stereodynamics of the Ne(P32)+N2 Reaction

Junwen Zou, Sean D. S. Gordon, Andreas Osterwalder

We present an experimental study of the low-energy stereodynamics of the Ne(^{3}P_{2})+N_{2} reaction. Supersonic expansions of the two reactants are superposed in a merged beam experiment, where individual velocity control of the two beams allows us to reach average relative velocities of zero, yielding minimum collision energies around 60 mK. We combine the merged beam technique with the orientation of the metastable neon atoms and measure the branching between two reaction channels, Penning ionization and associative ionization, as a function of neon orientation and collision energy, covering the range 0.06-700 K. We find that we lose the ability to orient Ne below ≈100 K due to dynamic reorientation. Associative ionization products Ne-N_{2}^{+} predissociate with a probability of 30%-60% and that associative ionization is entirely due to reactions of the Ω=2 state, where the singly occupied p orbital of the Ne^{*} is oriented along the interatomic axis.

Physical Review Letters•Sep 23, 2019•29 citations
Collisional ionization between two Rydberg atoms in relative motion is examined. A classical trajectory Monte Carlo method is used to determine the cross sections associated with Penning ionization. The dependence of the ionization cross section on the magnitude and the direction of orbital angular momentum of the electrons and the direction of the Laplace-Runge-Lenz vector of the electrons is studied. For a given magnitude of angular momentum, there can exist a difference of a factor of up to $\ensuremath{\sim}2.5$ in the ionization cross section between the orientations with the highest and the lowest ionization cross section. The case of exchange ionization is examined and its dependence on the magnitude of angular momentum is studied.
We present an experimental study of the low-energy stereodynamics of the Ne(^{3}P_{2})+N_{2} reaction. Supersonic expansions of the two reactants are superposed in a merged beam experiment, where individual velocity control of the two beams allows us to reach average relative velocities of zero, yielding minimum collision energies around 60 mK. We combine the merged beam technique with the orientation of the metastable neon atoms and measure the branching between two reaction channels, Penning ionization and associative ionization, as a function of neon orientation and collision energy, covering the range 0.06-700 K. We find that we lose the ability to orient Ne below ≈100 K due to dynamic reorientation. Associative ionization products Ne-N_{2}^{+} predissociate with a probability of 30%-60% and that associative ionization is entirely due to reactions of the Ω=2 state, where the singly occupied p orbital of the Ne^{*} is oriented along the interatomic axis.