Thermal and electrical measurements on solids at low temperatures

The following research is reported: thermal conductivity of electron- irradiated and additively colored MgO; thermal conductivity of Pb films in the intermediate state; thermal conductivity of neutron-irradiated pyrolytic graphite; specific heat of (CH/sub 3/)/sub 4/NMnCl/sub 3/; and thermal conductivity of normal and superconducting Pb-- Tl alloys (1 and 20% Tl). (22 references, 10 figures) (DLC)