| 摘要 |
<p>A refrigerator includes two displacers which are longitudinally adjacent to each other and the high temperature displacer includes a main compartment and an auxiliary compartment for a regenerator material. A direct passage for operating gas is formed between the two displacers. A cryopump includes a low temperature cryopanel, a radiation shield which is cooled to a higher temperature than that of the low temperature cryopanel, and the refrigerator.</p> |
