Abstract
AbstractThe stability of the ion beam in a thermospray interface is largely dependent on the control of the vaporizer temperature. The original time‐proportional vaporizer control circuit provides inadequate temperature stabilization. Modification of the circuit by repositioning the thermocouple amplifier and replacing the time proportional part of the circuit with a phase‐angle controller greatly improves the temperature stability and hence th ion‐current stability. The improvement in performance was demonstrated using terbutaline as a test substance.
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