LONG-RANGE ORDER IN LASER-COOLED, ATOMIC-ION WIGNER CRYSTALS OBSERVED BY BRAGG SCATTERING

被引：92

作者：

TAN, JN

BOLLINGER, JJ

JELENKOVIC, B

WINELAND, DJ

机构：

[1] Time and Frequency Division, National Institute of Standards and Technology, Boulder

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.75.4198

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first observation of Bragg scattering from atomic ions confined in an electromagnetic trap. The results reveal long-range order and give evidence for bulk behavior in a strongly coupled collection of laser-cooled Be-9(+) ions in a Penning trap. Long-range order emerges in approximately spherical clouds with as few as 5 x 10(4) ions (cloud radius r(0) approximate to 37a where a = Wigner-Seitz radius). Bulk behavior is evident with 2.7 x 10(5) trapped ions (r(0) approximate to 65a), with Bragg scattering patterns characteristic of a body-centered cubic lattice.

引用

页码：4198 / 4201

页数：4

共 40 条

[1]

ASHCROFT NW, 1976, SOLID STATE PHYS, P104

[2] MULTIPLE-SHELL STRUCTURES OF LASER-COOLED MG-24(+) IONS IN A QUADRUPOLE STORAGE RING [J].