New design of an ion cyclotron resonance cell capable of temperature variation over the range 80⩽T⩽450 K

The design of an ICR cell capable of convenient operation over the temperature range 80< or =T< or =450 K is reported. Time-temperature plots indicate that the cell can undergo changes in temperatures of DeltaT=100 K in 30-45 min. Thermal gradients in the cell are small, less than +/-2 K. Factors that governed the design of the cell are discussed in detail, as are potential problem areas. The cell is tested by measuring two proton transfer equilibrium constants, one that shows a large temperature coefficient and the other a small temperature coefficient. In each case the results agree well with similar experimental data in the literature.