Study And Application Of Dual Parameter Grid Ionization Chamber (GIC)

In response to the nuclear test, and environmental science and medical applications, often measure mixed a accurate of radioactive isotope samples of the atom. As the following reasons for making measurements prone to error: 1, sample self-absorption, even if the samples thin, wide-angle to the radio when there will still be self-absorption; 2,αparticles in the sample, or the scattering of the film, 3, mixed a samples of various energy particles interfere with each other a 4, the efficiency of the detector to determine exactly 5, the low efficiency of the detector in the circumstances, the weak a source of accurate measurement by counting statistics restrictions. Grid ionization chamber is the biggest characteristic of charged particles of nearly 100% detection efficiency, solid angle close to 2Ï€[20]; grid ionization chamber of the anode pulse rate reflects the energy particles measured the size and cathode pulse rate and under test In the direction of the particles, so the anode and cathode signals with measurements, you can be particles of energy and direction information can be further mentioned energy high-resolution.In this paper, the development and debugging of a Taiwan, and leads its cathode-level signals, using the two-parameter grid ionization chamber measuring the radioactive sources a (²³⁹Pu) of the two-dimensional spectra, calculate the angleα-particle distribution as well as samples of ²³⁹Pu elements in And small-angle three-dimensional measurement results were compared to discuss how to make use of angular distribution to correct measurement of self-absorption and anti-scattering effect and to improve the ionization chamber energy resolution.