Simulations of transverse velocity distributions of Cr atomic beam truncated by a three-aperture pre-collimating slit

被引：1

作者：

Wang Lidong ^{[1
]}

Qian Jin ^{[2
]}

机构：

[1] Zhejiang Prov Inst Metrol, Hangzhou 310000, Zhejiang, Peoples R China

[2] Natl Inst Metrol, Beijing 100013, Peoples R China

来源：

PROCEEDINGS OF THE 2012 SECOND INTERNATIONAL CONFERENCE ON INSTRUMENTATION & MEASUREMENT, COMPUTER, COMMUNICATION AND CONTROL (IMCCC 2012) | 2012年

关键词：

Cr atomic beam; laser cooling; Monte Carlo; LASER COLLIMATION; CHROMIUM BEAM; DEPOSITION;

D O I：

10.1109/IMCCC.2012.45

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

Transverse velocity distributions of Cr atomic beam truncated by a novel three-aperture pre-collimating slit, with and without one-dimensional transverse laser cooling, are presented. The simulations ware performed using Monte Carlo particle-optics approach, taking into account of the isotopes, distribution of longitudinal velocity and transverse divergence. The results showed that the atomic beam had a velocity distribution in the range of +/- 3m/s and +/- 1m/s, without and with laser cooling. Consequently, the transverse divergence is 0.77mrad and 0.27mrad, respectively. In addition, with an assumption that only Cr-52 atoms interact with the cooling laser, the existence of other isotopes will decrease the maximum value of the velocity, and increase the background.

引用

页码：164 / 167

页数：4