Mode shaping in mixed ion crystals of 40Ca2+ and 40Ca+
Abstract
We present studies of mixed Coulomb crystals of 40Ca+ and 40Ca2+ ions in a linear Paul trap. Doubly charged ions are produced by photoionisation of trapped 40Ca+ with a vacuum ultraviolet laser source and sympathetically cooled via Doppler cooled 40Ca+ ions. We investigate experimentally and theoretically the structural configurations and the vibrational modes of these mixed crystals. Our results with 40Ca2+ are an important step towards experimental realization of the proposals for mode shaping in a linear crystal and spin-dependent configuration changes from zigzag to linear as proposed by Li et al., Phys. Rev. A 87, (2013) 052304 and Phys. Rev. Lett 108, (2012) 023003 using ions excited to Rydberg states.
Keywords
Cite
@article{arxiv.1306.1109,
title = {Mode shaping in mixed ion crystals of 40Ca2+ and 40Ca+},
author = {T. Feldker and L. Pelzer and M. Stappel and P. Bachor and R. Steinborn and D. Kolbe and J. Walz and F. Schmidt-Kaler},
journal= {arXiv preprint arXiv:1306.1109},
year = {2015}
}
Comments
6 pages, 5 figures, submitted to Applied Physics B