Evaporative Cooling and Coherent Axial Oscillations of Highly Charged Ions in a Penning Trap

被引：32

作者：

Hobein, M. ^{[1
]}

Solders, A. ^{[1
]}

Suhonen, M. ^{[1
]}

Liu, Y. ^{[1
,2
]}

Schuch, R. ^{[1
]}

机构：

[1] Stockholm Univ, AlbaNova Res Ctr, S-10691 Stockholm, Sweden

[2] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 01期

基金：

瑞典研究理事会;

关键词：

ELECTRON; CLOUD;

D O I：

10.1103/PhysRevLett.106.013002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Externally, in an electron beam ion trap, generated Ar16+ ions were retrapped in a Penning trap and evaporatively cooled in their axial motion. The cooling was observed by a novel extraction technique based on the excitation of a coherent axial oscillation which yields short ion bunches of well-defined energies. The initial temperature of the ion cloud was decreased by a factor of more than 140 within 1 s, while the phase-space density of the coldest extracted ion pulses was increased by a factor of up to about 9.

引用

页数：4

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