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A neutron detector having approximately uniform sensitivity from 10-kev neutron energy to 3-Mev energy is described. The arrangement, known as a long counter, consists of a paraffin cylinder about 10″ outer diameter ×12″ long surrounding a long boron trifluoride proportional counter....
Apparatus for the introduction of radioactive materials into a cloud chamber has been employed to investigate the conservation of momentum in the β -decay of Li 8 to Be 8 , which subsequently breaks up into two α -particles. The projection on the plane of measurement of the angle between the...
In this last part of the work on the Π u 2 → Π g 2 bands of the C O 2 + molecule all data are collected on bands for which no classification could be found or for which the classification suggested is for any reason considered as hypothetical. Bands belonging to two groups around λ 3760 and...
Utilizing a scattering chamber based upon the successful design used by Herb, Kerst, Parkinson, and Plain (HKPP) in the measurement of proton-proton scattering, experimental data on the scattering of protons by deuterons have been obtained. The incident protons were accelerated by the 3.5-Mev...
A proof is given of the physically plausible theorem that in a nuclear reaction produced with an unpolarized beam of given orbital angular momentum incident on an unpolarized target, the angular distribution of the outgoing intensity cannot be more complicated than that of the incoming intensity.
In the synchro-cyclotron (or frequency-modulated cyclotron) the higher energies available are obtained at the expense of a decrease in the ion current compared with that available from the conventional cyclotron. This decrease results from the fact that during only a small fraction of the...
A photograph has been obtained of a mesotron of positive charge which comes to rest in the gas of a cloud chamber and ejects a positron of 24-Mev energy. Several possible interpretations of this photograph are discussed.
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