%0 Journal Article %T Calibration Constant of a Silver Activated Geiger Counter Used for Neutron Efficiency Measurements in Plasma Focus Devices: Theoretical vs. Experimental Studies %A G. R. Etaati %A R. Amrollahi %A V. Doust-Mohammadi %A Ghal-Eh, Nima %A M. Habibi %J Journal of Fusion Energy %@ 0164-0313 %D 2010