Wide Range Fission Chamber:
Fission chambers use neutron-induced fission to detect neutrons. The chamber is commonly same in construction to in which of an ionization chamber, except in which the coating material is highly enriched U235. A neutrons interact along with the U235, causing fission. One of the two fission fragments enters the chamber, when the other fission fragment embeds itself in the chamber wall.
One benefits of using U235 coating rather than boron is in which the fission fragment has a much higher energy level than the alpha particle from a boron reaction. A Neutron-induced fission fragments generates several more ionizations within the chamber per interaction than do the neutron- induced alpha particles. This permits the fission chambers to operate in higher gamma fields than an uncompensated ion chamber along with boron lining. A Fission chambers are frequently used as current indicating devices and pulse devices concurrently. They are especially meaningful as pulse chambers, due to the extremely large pulse size difference between neutrons and gamma rays. Since of the fission chamber's dual use, it is frequently used in "wide range" channels in nuclear instrumentation systems. A Fission chambers are also able of operating over the source and intermediate ranges of neutron levels.