Liquid deuteromethane pulse ionization chamber

Abstract The serviceability of a pulse ionization chamber filled with liquid deuteromethane (LCD 4 ) is confirmed experimentally. Deuteromethane with a level of electronegative impurities of 3 × 10 −9 equiv. O 2 has been obtained using Ni/SiO 2 adsorbent. It is shown that for electric fields up to 3kV/cm, the electronic properties of LCD 4 are close to those of LCH 4 . The ionization chamber shows an energy resolution of 14%(FWHM) when detecting 1.2 MeV γ-rays.