COLLISION COOLING OF IONS STORED IN QUADRUPOLE RADIOFREQUENCY TRAP

被引：38

作者：

MORIWAKI, Y

TACHIKAWA, M

MAENO, Y

SHIMIZU, T

机构：

[1] Department of Physics, The University of Tokyo, Tokyo, 7-3-1 Hongo, Bunkyo-ku

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1992年 / 31卷 / 11B期

关键词：

RF ION TRAP; COLLISION COOLING; RF HEATING; MG+ ION; ELASTIC COLLISION; MATHIEU MOTION;

D O I：

10.1143/JJAP.31.L1640

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a novel model for collisional energy transfer between ions and neutral molecules in the quadrupole radio-frequency trap. Calculated results quantitatively reproduce the dependence of the ion temperature T(i) on the buffer gas pressure P(n), observed on Mg+ ions and several collision partners (H-2, He, and CH4). It is deduced from the present model that T(i) is proportional to p(n)-1/3 in the low-pressure range below 10(-)6 Torr, in good agreement with the experimental results.

引用

页码：L1640 / L1643

页数：4

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