LND 52111 is a 6.1" L x 0.63" diameter xenon gas filled gamma ionization chamber with a cathode surface material of stainless steel. It operates on 1500VDC and has a maximum operating voltage of 3000V. It's designed for detecting gamma rays and its Gamma sensitivity (A/R/HR-Cs-137) is 1.0E-10. It has 3 leads Anode, Guard, and cathode. Brand New!