Installation for measuring β-γ and γ-γ disturbed angular correlations in the temperature range from -196 to +600 deg C

A description of the installation is given, which is constructed on the basis of correlation spectrometer and which permits to measure β-γ and γγ perturbed angular correlations (PAC) at source temperature from -196 up to +600 deg C. The construction of the chamber with detector for β particle detection is given. The chamber is made of duralumin; chamber wall thickness is 1.5 mm, diameter is 150 mm. A small S-like electromagnet or Helmholz electric coils are put into the chamber for polarization of ferromagnetic matrices. A thin scintillator, connected to a photomultiplier, is used as a detector of β particles. In order to measure β-γ PAC at different temperatures, the chamber is connected to cryostat. β-γ (nonperturbed) angular correlations for β-γ cascade when 124Sb-124Te decay Esub(p)=1800-2300 keV, Esub(γ)=602.7 keV, to test the operation of the installation. The source is produced by evaporation of a water solution drop on aluminium- malarium foil with the thickness of 680 μkgxcm-2. Obtained values of angular correlation coefficients agree well with the data obtained by other authors. According to measurements of β-γ and γ-γ PAC obtained are the following values of induction of magnetic field on the 124Te nucleus: β=383(87)K Gs and β=374(31) k Gs for measurements of β-γ and γ-γ PAC respectively. A conclusion is made that the proposed installation can be used for investigation of β-γ PAC