Thick target neutron yields of 100- and 230-MeV/nucleon helium ions

Tsai, P.-E.; Heilbronn, L.*; Lai, B. L.*; Iwata, Yoshiyuki*; Murakami, Takeshi*; Ogawa, Tatsuhiko   ; Sheu, R.-J.*

The thick target neutron yields from 100- and 230-MeV/nucleon helium ions bombarding water, PMMA, and iron targets were measured by using the time-of-flight technique at 0 to 121. The experimental data were compared with INCL-4.6, RQMD, and ISABEL model calculations respectively by the PHITS, FLUKA, and MCNP6 codes. The model calculations of the neutron yields generally agree with the measurements, especially in the intermediate and low energy regions at angles at and above 30 degrees. However, some disagreements exist not only between the data and the simulations but also between models. The benchmark results will be used for further improvement of the PHITS code in the future.