Bragg Diffraction from Crystallized Ion Plasmas

Author:

Itano W. M.1,Bollinger J. J.1,Tan J. N.1,Jelenković B.1,Huang X.-P.1,Wineland D. J.1

Affiliation:

1. Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO 80303, USA.

Abstract

Single crystals of a one-component plasma were observed by optical Bragg diffraction. The plasmas contained 10 5 to 10 6 single-positive beryllium-9 ions ( 9 Be + ) at particle densities of 10 8 to 10 9 per cubic centimeter. In approximately spherical plasmas, single body-centered cubic (bcc) crystals or, in some cases, two or more bcc crystals having fixed orientations with respect to each other were observed. In some oblate plasmas, a mixture of bcc and face-centered cubic ordering was seen. Knowledge of the properties of one-component plasma crystals is required for models of white dwarfs and neutron stars, which are believed to contain matter in that form.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference27 articles.

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