Hyperfine Interactions

, Volume 171, Issue 1, pp 93–107

Precision spectroscopy at heavy ion ring accelerator SIS300

Article

DOI: 10.1007/s10751-007-9509-4

Cite this article as:
Backe, H. Hyperfine Interact (2006) 171: 93. doi:10.1007/s10751-007-9509-4

Abstract

Unique spectroscopic possibilities open up if a laser beam interacts with relativistic lithium-like ions stored in the heavy ion ring accelerator SIS300 at the future Facility for Antiproton and Ion Research FAIR in Darmstadt, Germany. At a relativistic factor γ = 36 the 2P1/2 level can be excited from the 2S1/2 ground state for any element with frequency doubled dye-lasers in collinear geometry. Precise transition energy measurements can be performed if the fluorescence photons, boosted in forward direction into the X-ray region, are energetically analyzed with a single crystal monochromator. The hyperfine structure can be investigated at the 2P1/22S1/2 transition for all elements and at the 2P3/22S1/2 transition for elements with Z≤50. Isotope shifts and nuclear moments can be measured with unprecedented precision, in principle even for only a few stored radioactive species with known nuclear spin. A superior relative line width in the order of 5·10−7 may be feasible after laser cooling, and even polarized external beams may be prepared by optical pumping.

Key words

laser spectroscopy relativistic lithium-like ions, laser cooling hyperfine spectroscopy nuclear polarization SIS300 

Abbreviations

FAIR

Facility for Antiproton and Ion Research

HI

Heavy Ion

QED

Quantum Electrodynamics

CCD

Charge Coupled Device

EBIT

Electron Beam Ion Trap

Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  1. 1.Institut für KernphysikJohannes Gutenberg-Universität MainzMainzGermany

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