Fig. 3.27 Left: The temperature (colour-coded) and Mach number (contoured) for interacting gas
jets with different separations. Top to bottom: Separation, d, ¼ 6 10
À5 λ MFP , 6 10
À2 λ MFP , 60 λ MFP ,
and 3 10
3 λ MFP . Right: The fraction of molecules from source 1 at each position in the field
corresponding to the four cases on the left
3.4 Gas Expansion
231
jets with different separations. Top to bottom: Separation, d, ¼ 6 10
À5 λ MFP , 6 10
À2 λ MFP , 60 λ MFP ,
and 3 10
3 λ MFP . Right: The fraction of molecules from source 1 at each position in the field
corresponding to the four cases on the left
3.4 Gas Expansion
231