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Four samples of barium carbonate were irradiated with neutrons at three different times and at three different positions in the heavy water pile. A few days after an irradiation, lanthanum separations were made until no further La 140 activity could be detected. The lanthanum was discarded. At...
The mean range of the radiation that generates penetrating showers has been determined in the atmosphere and in water. The results are respectively ∼120 g/ cm 2 and ∼55 g/ cm 2 . The relation between the observed variation of the frequency of penetrating showers with barometric pressure and...
Phase-shifts in S and P waves are found that fit the observed scattering of protons by helium (4) within the experimental accuracy of the recent Minnesota results. The S wave phase is negative and rather small. The P 1 2 and P 3 2 waves have different phase-shifts, both positive, but there are...
By means of super-regenerative oscillator techniques, magnetic resonance absorption peaks have been observed for Be 9 , P 31 , Cl 35 , Rb 85 , Cs 133 , and La 139 . By simultaneous observation of each of these resonances and of the proton absorption peak in the same magnetic field, the ratio of...
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