Shakeoff Ionization near the Coulomb Barrier Energy.

摘要: We measure the projectile K x-ray spectra as a function of beam energies around Coulomb barrier in different collision systems. The energy is scanned small steps aiming to explore nuclear effects on elastically scattered ions. variation with ion-beam exhibits an unusual increase between interaction and fusion energies. This additional contribution ionization can be attributed shakeoff outer-shell electrons ions due sudden recoil (∼10^{-21}  sec) caused by attractive potential, which gets switched near energy. In approximation limit, theoretical probability calculation explains observed data well. addition its fundamental interest, such processes play significant role dark matter detection through possible mechanism emissions, where weakly interacting massive particle-nucleus elastic scattering lead nuclear-recoil-induced inner-shell vacancy creations. Furthermore, present work may provide new prospects for atomic physics research at well novel technique perform distribution studies two-body