Measurement of high-energy prompt gamma-rays from neutron induced fission of U-235.

We have developed a new setup to measure prompt γ -rays from the 235U(nth, f) reaction. The setup consists of two multi-wire proportional counters (MWPCs) to detect the fission fragments, two LaBr3(Ce) scintillators to measure the γ -rays. The highly efficient setup was installed at the PF1B beam line of the Institut Laue Langevin (ILL). We have successfully measured the γ -ray spectrum up to about 20MeV for the fist time in neutron-induced fission. [ABSTRACT FROM AUTHOR]