Zur Energieverteilung der Sekundärelektronen aus Isolatoren

The energy spectrum of secondary electrons from insulators has been measured using primary electrons of a beam density of 10^?13 to 10^?14 A/cm² and detecting single secondaries by an Allen-type multiplier.     

Energieverteilung von in flüssigem Methan gestreuten kalten Neutronen

The interaction between CH₄ molecules shall be studied by neutron spectroscopic measurements for different phases of the substance. In a first investigation the molecular rotations are found to be completely free in the liquid state. A symmetrical splitting of the levelL=1 is observed. A comparison of the experimental results with transition probabilities calculated only from degrees of degeneracy gives good agreement for transitionsΔL≧2 and for those transitionsΔL=1 which haveL≧2 as the initial state. These transitions, therefore, appear to be rather independent ofL. The experiments indicate futhermore, that also with respect to their translational motions the molecules behave like in a gas.     

Die absolute Intensität der durch Elektronenstoß in einer dicken Cu-Antikathode erzeugtenKα-Strahlung

The numberN _Kα ^dir (produced) ofKα-photons produced by electron-bombardment in a thick target of copper per incident electron has been measured absolutely with the Ross-filter method and relatively with the crystal-spectrometer method in the energy-region up to the four times theK-ionization energyE _K . The result can be presented in the following empirical form:N _Kα ^dir (produced) = 4π·