Development of a Spatially Resolved ^3$$3He Quasi Particle Detector
Andreev surface bound sates are known to exist on the boundaries of superfluid ^3$$3He B. However, the detailed nature of their interaction with bulk quasi particles is not well known. In a manner similar to angle resolved photo emission spectroscopy, surface states can be probed by measuring the change in momentum of bulk quasi particles scattered from the surface. In order to make such a measurement, we have designed a spatially resolved quasi particle detector. The detector consists of an array of micro machined resonators, which are sensitive to quasi particle flux. The detector is based on previously developed micro machined resonators, which have been successfully used to study superfluid ^3$$3He B and ^4$$4He. Presented here is the design of the detector and the fabrication procedure.