Projectile fragment emission in the fragmentation of 20Ne on C, Al and CH2 targets at 400 MeV/u

Highlights: • The averaged emission angle increase with the decrease of the charge of PF for the same target. • The cumulated squared transverse momentum distribution of PF can be explained by a single Releigh distribution. • The temperature of PFs emission source is about 2.0 MeV and do not depend on the size of PF and the mass of target. The emission angle distributions of projectile fragments (PFs) and the temperature of PFs emission source for fragmentation of ²⁰Ne on C, Al and CH₂ targets at 400 MeV/u are investigated. It is found that the averaged emission angle increase with the decrease of the charge of PF for the same target, and no obvious dependence of angular distribution on the mass of target nucleus is found for the same PF. The cumulated squared transverse momentum distribution of PF can be well explained by a single Rayleigh distribution, the temperature parameter of PFs emission source is obtained, which is about 2.0 MeV and do not depend on the size of PF and mass of target for PF with charge of $5⩽Z\le 9$.