TY - JOUR AU1 - Lim, C C AU2 - Aziz, R A AU3 - Sawyer, D J AB - An apparatus for obtaining controlled low temperatures using a specially designed cryopump is described. The apparatus is a closed system which reduces the hazards connected with explosive or toxic refrigerants. The closed system also allows the refrigerant to be almost completely recovered. TI - A cryopump for use in low temperature control JF - Journal of Scientific Instruments DO - 10.1088/0950-7671/44/1/421 DA - 1967-01-01 UR - https://www.deepdyve.com/lp/iop-publishing/a-cryopump-for-use-in-low-temperature-control-HxYp2YJZHV SP - 68 VL - 44 IS - 1 DP - DeepDyve ER -