EDELWEISS detectors measure the ionization produced in a semiconducting germanium crystal.
Researchers intercalated multi-layered germanium crystals with calcium atoms between the layers.
A whisker-like wire is placed lightly in contact with a solid crystal (such as a germanium crystal) in order to detect a radio signal by the contact junction effect.
SPI consists of a coded mask of hexagonal tungsten tiles, above a detector plane of 19 germanium crystals (also packed hexagonally).
Before current purification techniques were refined, germanium crystals could not be produced with purity sufficient to enable their use as spectroscopy detectors.
Because what the germanium crystal is detecting is uranium two-thirty-five.
Silicon and germanium crystals for transistors are sometimes grown in argon atmospheres.
The experiment uses cryogenic detectors, measuring both the phonon and ionization signals produced by particle interactions in germanium crystals.
The usual construction of an alloy-junction transistor is a germanium crystal forming the base, with emitter and collector alloy beads fused on opposite sides.
The instrument detectors are nine high-purity germanium crystals.
