Patent ID: 7155960

Claim:
A temperature-programmed desorbed gas analyzing apparatus comprising: a sample chamber in which a sample is disposed; a heating unit for heating the sample disposed in the sample chamber; a measuring chamber in which gas desorbed from the sample by heating is introduced; a pressure-reducing unit for reducing the pressure in the measuring chamber; a mass spectrometer having a gas detector disposed in the measuring chamber; an intermediate pressure-reduced chamber provided between the sample chamber and the measuring chamber; a first orifice through which the intermediate pressure-reduced chamber and the sample chamber intercommunicate with each other; a second orifice through which the intermediate pressure-reduced chamber and the measuring chamber intercommunicate with each other, desorbed gas occurring in the sample chamber being introduced through the first orifice, the intermediate pressure-reduced chamber and the second orifice into the measuring chamber; and a pressure adjusting unit for controlling the pressure of the intermediate pressure-reduced chamber so that the pressure of the measuring chamber is fixed.