SPATIAL DOSIMETRY AND SPECTROMETRY WITH NEUTRON-ACTIVATION OF REMAINING AG FROM NUCLEAR-EMULSION

Certain characteristics of nuclear emulsion make it suitable for dosim etric measurements in space. It serves as an integrating medium of all ionizing effects i.e. the total dose absorbed within the detector, wh ich leads to developable grains. Their number or the mass of silver, r emaining after processing can be determined by neutron activation of t he Ag nuclides. Using emulsions with different sensitivity thresholds (Ilford K5 divided by K0) allows to differentiate to a certain degree LET-classes of the ionizing radiation, and to obtain a rough compositi on of the flux over a wide range of dose. The results of the calibrati on with gamma rays, protons and oxygen for emulsions of different sens itivities are given. Results from various space experiments (Bion 10, IML1, MIR, D2, IML2) are presented too.