Finger of the cooling circuit of a semi - conductor and device cryogenic provided with such a finger.

摘要

Finger of the cooling to a variable cross section and the cryogenic device provided with such a finger. & br / the finger (1), intended to cool a semiconductor circuit (2a, 2b) in thermal contact with its free end (7), is hollow and its wall (3) defined in the vicinity of the free end (7), a volume whose cross-section decreases on going away from the free end (7). A cryogenic fluid (5) circulates in the internal volume of the finger in order to cool. & br / the invention applies in particular for the cooling of the detectors infrared -.