Mass Dependence of Cross Section Fluctuation in Dissipative Reaction ¹⁹F+⁵¹V

Excitation functions for projectile-like fragments from ¹⁹F+⁵¹V reaction have been measured at 102.25 to 109.50MeV in 250keV steps. A TOF+(Δ E - E) telescope at θ_L = 21.7° is used to identify atomic number Z and mass number A of ejectiles simultaneously. Fluctuations of the dissipative cross section for a series of isotopes are observed. Their coherence energy widths are extracted by generalized statistical fluctuation analysis and the dependence on mass number and on N/Z values are observed for the first time.