The de-agglomeration and dispersion of small dust particles - Principles and applications

被引：18

作者：

Blum, J ^{[1
]}

Schnaiter, M ^{[1
]}

Wurm, G ^{[1
]}

Rott, M ^{[1
]}

机构：

[1] TECH UNIV MUNICH,FACHGEBIET RAUMFAHRTTECH,D-80333 MUNICH,GERMANY

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1996年 / 67卷 / 02期

关键词：

D O I：

10.1063/1.1147520

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A mechanism for the generation of dust dispersions consisting of single micrometer-sized particles in a low pressure gas is discussed, The particles are de-agglomerated and dispersed by injecting a dust sample (powder) together with a small amount of an arbitrary type of gas into a modified turbomolecular pump. The discussed sample release mechanism/dust disperser offers a wide range of possible gas and particle parameters, suitable for different kinds of experiments. We present two applications of our de-agglomeration mechanism. In the first experiment, homogeneous dust clouds were produced under microgravity conditions, and the Brownian motion of the single dust grains was studied. The second application is a matrix isolation technique for the spectroscopical investigation of single dust particles. (C) 1996 American Institute of Physics.

引用

页码：589 / 595

页数：7