Technical data

Overview 1
Agilent Jet Stream Thermal Gradient Technology
Agilent 6200 Series TOF and 6500 Series Q-TOF LC/MS System Concepts Guide 37
Agilent Jet Stream thermal gradient focusing consists of a
superheated nitrogen sheath gas that is introduced collinear
with and concentric to the pneumatically assisted electrospray.
Thermal energy from the superheated nitrogen sheath gas is
focused to the nebulizer spray producing the most efficient
desolvation and ion generation possible. The enhanced
desolvation results in more ions entering the sampling capillary
as shown in Figure 17 and concomitant improved signal to
noise. Parameters for the Agilent Jet Stream Technology are the
superheated nitrogen sheath gas temperature and flow rate,
and the nozzle voltage.
The capillary is a resistive capillary that improves ion
transmission and allows virtually instantaneous polarity
switching.
Figure 17 Agilent Jet Stream Electrospray Ion Source