Figure 10
Schematic cross section of a two-stage ADR. The spectrometer is pre-cooled to 77 and 4.2 K using liquid N2 and He, which could be replaced by mechanical pulse-tube coolers in future spectrometer designs. The 3 × 3 STJ detector array is held at the end of the cold finger at ∼0.1 K behind three IR-blocking windows within ∼15 mm of the room-temperature sample. |