AI Article Synopsis
Article Abstract
A modified Penning trap with a spatially uniform magnetic field B inclined with respect to the axis of rotational symmetry of the electrodes is considered. The inclination angle can be arbitrary. Canonical transformation of phase variables transforming the Hamiltonian of the considered system into a sum of three uncoupled harmonic oscillators is found. We determine the region of stability in space of two parameters controlling the dynamics: the trapping parameter κ and the squared sine of the inclination angle ϑ0. If the angle ϑ0 is smaller than 54°, a charge occupies a finite spatial volume within the processing chamber. A rigid hierarchy of trapping frequencies is broken if B is inclined at the critical angle: the magnetron frequency reaches the modified cyclotron frequency while the axial frequency exceeds them. Apart from this resonance, we reveal the family of resonant curves in the region of stability. In the relativistic regime, the system is not linear. We show that it is not integrable in the Liouville sense. The averaging over the fast variable allows to reduce the system to two degrees of freedom. An analysis of the Poincaré cross-sections of the averaged systems shows the regions of effective stability of the trap.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1063/1.4961068 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Overview of High-Performance Timing and Position-Sensitive MCP Detectors Utilizing Secondary Electron Emission for Mass Measurements of Exotic Nuclei at Nuclear Physics Facilities.
Sensors (Basel)
November 2024
Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland.
Timing and/or position-sensitive MCP detectors, which detect secondary electrons (SEs) emitted from a conversion foil during ion passage, are widely utilized in nuclear physics and nuclear astrophysics experiments. This review covers high-performance timing and/or position-sensitive MCP detectors that use SE emission for mass measurements of exotic nuclei at nuclear physics facilities, along with their applications in new measurement schemes. The design, principles, performance, and applications of these detectors with different arrangements of electromagnetic fields are summarized.
View Article and Find Full Text PDFIndividual-Ion Addressing and Readout in a Penning Trap.
Phys Rev Lett
October 2024
Georgia Tech Research Institute, Atlanta, Georgia 30332, USA.
Article Synopsis
- Researchers have developed a technique for individual addressing and detection of ions in a rotating planar crystal using a compact Penning trap.
- The setup uses a rotating triangular potential to stabilize a crystal of ^{40}Ca^{+}, and utilizes high-power near-infrared lasers for qubit operations.
- Current fidelity is around 97% due to thermal motion; however, improvements could lead to much higher fidelity through advanced cooling techniques.
Controlling the initial separation distance between two electron plasma vortices in a Malmberg-Penning trap.
Sci Rep
October 2024
Department of Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo Ward, Kyoto, 606-8585, Japan.
This paper presents a novel method to continuously control the initial separation distance d between two plasma vortices of electrons. In this method, the two electron columns are initially confined individually in two coaxial Malmberg-Penning traps with different axial lengths. They rotate around the trap axis at different rotation frequencies due to the [Formula: see text] drift.
View Article and Find Full Text PDFHigh-Precision Mass Measurements of Neutron Deficient Silver Isotopes Probe the Robustness of the N=50 Shell Closure.
Phys Rev Lett
September 2024
Department of Physics, University of Jyväskylä, Accelerator Laboratory, P.O. Box 35, FI-40014, Jyväskylä, Finland.
Article Synopsis
- * The new mass data, with a precision around 1 keV/c², supports the robustness of the N=50 neutron shell closure and enables comparisons with advanced theoretical models for understanding nuclear properties.
- * The study also highlights the challenges faced by theoretical approaches, like ab initio calculations and density functional theory, in accurately predicting ground-state properties in the silver isotopic chain near the proton dripline.
High-precision measurement of the atomic mass of and implications to isotope shift studies.
Eur Phys J A Hadron Nucl
July 2024
Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland.
The absolute mass of was determined using the phase-imaging ion-cyclotron-resonance technique with the JYFLTRAP double Penning trap mass spectrometer. A more precise value for the mass of is essential for providing potential indications of physics beyond the Standard Model through high-precision isotope shift measurements of Sr atomic transition frequencies. The mass excess of was refined to be from high-precision cyclotron-frequency-ratio measurements with a relative precision of .
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!