2022 CAP Congress / Congrès de l'ACP 2022

Session

W2-10 DAMOPC I (DAMOPC) | DPAMPC I (DPAMPC)

W2-10

8 Jun 2022, 13:15

McMaster University

Conveners

W2-10 DAMOPC I (DAMOPC) | DPAMPC I (DPAMPC)

• Jens Lassen

3056. (G*) Atomic Shell Structure of the Entire Periodic Table Using an Alternative Approach to Orbital-Free Density-Functional Theory

Phil LeMaitre

08/06/2022, 13:15

Atomic, Molecular and Optical Physics, Canada / Physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

The principal aim of orbital-free density-functional theory (OF-DFT) over its competitors is to reduce the computational effort required to efficiently calculate properties of quantum systems, thereby increasing the feasibility of many applications to large interacting systems. A novel implementation of OF-DFT is achieved using the isomorphism between classical statistical mechanics in 3+1...

3142. (G*) A Projection Operator Approach to Charge-State Distributions following the beta-Decay of $^6$He

Aaron Bondy

08/06/2022, 13:30

Atomic, Molecular and Optical Physics, Canada / Physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

The beta-decay of helium-6 provides a testing ground in searching for physics beyond the Standard Model, which predicts the kinematics of this decay. A large discrepancy between our theory and experiments at U. of Washington [1] has emerged in the amount of double ionization following beta-decay. The theoretical method utilizes correlated Hylleraas wave functions and is not satisfactory in...

3140. Relativistic corrections to helium two-photon decay rates

Aaron Bondy

08/06/2022, 13:45

Atomic, Molecular and Optical Physics, Canada / Physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

Oral not-in-competition (Graduate Student) / Orale non-compétitive (Étudiant(e) du 2e ou 3e cycle)

Two-photon transition rates are important in determining astrophysical quantities such as population balance in planetary nebulae. We recently calculated two-photon decay rates in heliumlike ions including the finite nuclear mass effects [1]. We have now perturbatively added relativistic corrections to these results, giving the most precise and accurate calculations to date. We first tested...

3066. (U*) Diagnostic technique to identify collision site in an ion trap

Itzal De Urioste Terrazas

08/06/2022, 14:00

Atomic, Molecular and Optical Physics, Canada / Physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

Oral Competition (Undergraduate Student) / Compétition orale (Étudiant(e) du 1er cycle)

Atomic clocks made of trapped ions are subject to collisions with gases in the chamber. These collisions change the transition frequency of the trapped ions, affecting their use in the clock. When a collision occurs, the trap is removed, and all the ions are replaced since the affected ion (or ions) is unknown. I will present the theory to diagnose the collision site and how it can be mitigated.

3522. Suppression of Raman Interaction due to destructive interference in Alkali Atoms

Arina Tashchilina (University of Alberta)

08/06/2022, 14:15

Atomic, Molecular and Optical Physics, Canada / Physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

Oral (Non-Student) / Orale (non-étudiant(e))

Raman interactions are a powerful tool for performing arbitrary rotations between two Zeeman levels of an individual ion or a neutral atom. Universality of the technique places it on central roles in many quantum technologies: single qubit gates in atomic quantum processors, mediating interactions in quantum simulators, and mapping quantum information into long-lived states in optical quantum...