X-RAY COUNTER TUBE

摘要

PURPOSE:To count X-rays over a wide range from low energy to high energy with good energy resolution and high sensitivity. CONSTITUTION:The X-ray incidence window 3 of a metal case 1 is formed with a conducting metal lattice, and the end face of a gas cell 7 on the X-ray incidence side where the detection gas stored in the metal case 1 is introduced is formed with a Mylar film 11 of a conductive polymer film applied with negative high voltage against the X-ray incidence window 3. The end face on the X-ray radiation side opposite to the X-ray incidence window 3 of the gas cell 7 is connected to a ultraviolet photomultiplier 29 via a quartz glass 15. A conducting metal lattice 17 applied with the negative high voltage against the Mylar film 11 is provided on the Mylar film 11 side in the gas cell 7, and a conducting metal lattice 19 connected to the earth is provided on the quartz glass 15 side in the gas cell 7 in parallel with the Mylar film 11 respectively.