半导体应用资料库
————冷（凝）泵基础讲座
2011.07.01
上海驰舰半导体科技有限公司
康凯丽
CRYOPUPING SEMINAR全红婵全运会首金
光轴WELCOME TO
湛江城市广场
CTI-CRYOGENICS’ CRYOPUMPING BASICS
时光飞逝的成语CRYOPUMPING BASICS: Molecules and Temperature
Molecules and Temperature Molecules in constant motion have kinetic energy.
The temperature determines
their average kinetic energy.
The higher the temperature,
the faster the molecules move.
CRYOPUMPING BASICS: Molecules and Temperature
晚上吃什么好Water Boils373 K100o C212o F
属牛的本命佛
Room Temperature293 K20o C68o F Water Freezes273 K0o C32o F
Nitrogen Boils77 K-196o C-320o F
邓红梅Hydrogen Boils20 K-253o C-423o F Helium Boils 4.2 K-269o C-452o F Absolute Zero0.0 K-273o C-459o F
十二星座谁最聪明No Molecular Activity
CRYOPUMPING BASICS: Capture Theory
Cryocondensation（冷凝）
Pumping gas by cooling them to point that
they conden, and freeze, on a surface. A
cryopump pumps water and “air” gas by cryocondensation; the gas forming a layer of frost on the condensing array.
