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Title: Multiply-ionized atoms isolated at low energy in a unitary Penning trap

Ions extracted from the EBIT at NIST are slowed and captured in a Penning trap that is made very compact (< 150 cm{sup 3}) by a unitary architecture [1]. Measurements after 1 ms of ion storage indicate that the isolated ions are distributed with 5.5(5) eV of energy spread, which is roughly 2 orders of magnitude lower than expected in the ion source, without implementing any active cooling [2]. Some experiments are discussed. One goal is to produce one-electron ions in high angular momentum states for studying optical transitions between Rydberg states that could potentially enable new tests of quantum electrodynamics (QED) and determinations of fundamental constants [3].
Authors:
; ;  [1] ;  [2]
  1. National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899 (United States)
  2. National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899, USA and University of Maryland, College Park, Maryland 20742 (United States)
Publication Date:
OSTI Identifier:
22390837
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1640; Journal Issue: 1; Conference: 12. International Symposium on Electron Beam Ion Sources and Traps, East Lansing, MI (United States), 18-21 May 2014; Other Information: (c) 2015 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ANGULAR MOMENTUM; ATOMS; CAPTURE; COOLING; ELECTRONS; EV RANGE; FUNDAMENTAL CONSTANTS; IONS; POTENTIALS; QUANTUM ELECTRODYNAMICS; RYDBERG STATES; TRAPS