eprintid: 33266
rev_number: 14
eprint_status: archive
userid: 7379
dir: disk0/00/03/32/66
datestamp: 2023-05-17 08:33:45
lastmod: 2023-05-22 17:37:00
status_changed: 2023-05-17 08:33:45
type: doctoralThesis
metadata_visibility: show
creators_name: Klimes, Jeffrey
title: Injection of Highly Charged Ion Ensembles for Spectroscopy of Magnetic Interactions in the ARTEMIS Penning Trap
subjects: ddc-530
divisions: i-130001
adv_faculty: af-13
cterms_swd: g-factor
cterms_swd: highly charged ions
cterms_swd: cryogenic vacuum
cterms_swd: Penning trap
cterms_swd: Ion injection
abstract: Quantum electrodynamics (QED) is the most precisely validated theory in modern physics, yet it remains mostly untested in the most extreme fields. In addition, atomic nuclei generate fields much stronger than can be made in even the most advanced laser and magnet facilities. Therefore, heavy highly charged ions (HCIs) present themselves as natural laboratories for investigating QED in strong fields. ARTEMIS is a Penning trap experiment designed for measurement of electron and nuclear magnetic moments in heavy HCIs using laser-microwave double-resonance (LMDR) spectroscopy. This technique enables measurement of magnetic moments in atomic systems with hyperfine structure, in which the transitions are often in the near ultraviolet (UV) regime such as hydrogenlike bismuth, 209Bi82+. Precision spectroscopy of such heavy, HCIs requires an exceedingly well isolated trapping environment with vacuum pressure better than 10−15 mbar. This work presents the implementation of the first ion trap capable of long-term storage of heavy HCIs with a residual gas pressure better than 2.4x10−16 mbar and with rapid cycle times as fast as 100 ms for irradiation with UV laser light, as well as the design of the corresponding injection beamline. The trapping conditions are verified by non-destructive monitoring of trapped HCIs over a few days, which were ultimately stored for about 2 weeks. The operation of such a fast-opening cryogenic valve (FCV) is essential to the LMDR technique for many heavy ion systems where excellent environmental conditions in the trapping region and direct line of sight for laser irradiation are required.
date: 2023
id_scheme: DOI
id_number: 10.11588/heidok.00033266
ppn_swb: 1845941667
own_urn: urn:nbn:de:bsz:16-heidok-332665
date_accepted: 2023-05-10
advisor: HASH(0x55e0f7fe7ac0)
language: eng
bibsort: KLIMESJEFFINJECTIONO20230515
full_text_status: public
place_of_pub: Heidelberg
citation:   Klimes, Jeffrey  (2023) Injection of Highly Charged Ion Ensembles for Spectroscopy of Magnetic Interactions in the ARTEMIS Penning Trap.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/33266/1/DissertationPrinted240323.pdf