A computer interfaced high temperature/Knudsen cell quadrupole mass spectrometer data acquisition system: application to the investigation of the volatile abundance of submarine basalts from the Mariana Island-arc and trough

Abstract

A method for the controlled heating of a high temperature Knudsen-cell effusion source and an automatic data acquisition system for an interfaced quadrupole mass spectrometer are described. The method of controlled heating (with variable heating rates, 1.