pressure：10-8 Torr
molecular beam：supersonic jet molecular beam，rotational temperature of molecules ~20K
light Sources：VUV FEL（50-150 nm，>100micro-j), VUV FWM (from table Laser, 120-190 nm, >1micro-j), UV/Vis/IR(from table Laser, 200-900nm)
detection methods: H taom Rydberg tagging TOF spectroscopy, Time sliced velocity mapping imaging, mass sepctroscopy