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Neutron-transmutation-doped germanium bolometers

Conference ·
OSTI ID:5983343
Six slices of ultra-pure germanium were irradiated with thermal neutron fluences between 7.5 x 10/sup 16/ and 1.88 x 10/sup 18/ cm/sup -2/. After thermal annealing the resistivity was measured down to low temperatures (< 4.2 K) and found to follow the relationship rho - rho/sub 0/exp(..delta../T) in the hopping conduction regime. Also, several junction FETs were tested for noise performance at room temperature and in an insulating housing in a 4.2K cryostat. These FETs will be used as first stage amplifiers for neutron-transmutation-doped germanium bolometers.
Research Organization:
Lawrence Berkeley Lab., CA (USA); Max-Planck-Institut fuer Radioastronomie, Bonn (Germany, F.R.)
DOE Contract Number:
AC03-76SF00098
OSTI ID:
5983343
Report Number(s):
LBL-15410; CONF-830235-2; ON: DE83015993
Country of Publication:
United States
Language:
English