Author/Authors :
Tralshawala، نويسنده , , N and Aslam، نويسنده , , C.K and Brekosky، نويسنده , , R.P and Chen، نويسنده , , T.C and Figueroa Feliciano، نويسنده , , E and Finkbeiner، نويسنده , , F.M and Li، نويسنده , , M.J and Mott، نويسنده , , D.B and Stahle، نويسنده , , C.K and Stahle، نويسنده , , C.M، نويسنده ,
Abstract :
We report on progress made so far at NASA Goddard Space Flight Center towards the development of arrays of X-ray microcalorimeters as candidates for the high-resolution X-ray spectrometer on the Constellation-X mission. In the design concept presently under consideration, the microcalorimeter consists of (i) a Bi/Cu multilayer absorber for stopping and thermalizing the incident X-rays, (ii) an e-beam evaporated Mo/Au proximity bilayer with sputtered Nb leads for sensing the resultant temperature rise, and (iii) a silicon nitride membrane to provide a weak thermal link to the sink temperature so that the calorimeter can return to its equilibrium temperature. Fabrication details and preliminary results are reported.
Keywords :
Constellation-X , Low-temperature detector , Superconducting transition edge sensors , Silicon nitride membranes , Microcalorimeter
