| 摘要 |
In view of that in an existing specimen cryo holder a change in the orientation of a specimen would lead to tilting of a dewar together with the specimen and hence to bubbling of a cooling source contained in the dewar, provided is a specimen cryo holder (13) including a mechanism (14, 15, 17, 18) capable of cooling a specimen (1) while keeping the posture of a dewar in a fixed direction even when the specimen (1) is tilted into a direction suitable for processing or observation thereof. Also provided is a dewar wherein a vacuum maintenance mechanism (24, 25) is mounted to an outer vessel (21) by which an inner vessel (23) holding a cooling source therein is vacuum-insulated from the outside air. |
