PPT Slide
We measure the neutron and core velocities from the sequential breakup
and reconstruct either their relative velocity along the z axis (collinear experiment)
or else their full relative decay properties
Knockout Reactions - unbound final state
Examples: MSU (collinear), GSI (large acceptance), GANIL/LPC/Surrey (large acceptance)
These studies have often used Borromean halo nuclei as the projectiles
The haloes in these cases often ( 11Li, 14Be ) have a large (dominant) component
with the neutrons in s-wave orbitals (the lack of centrifugal barrier enhances the halo)
Thus, it becomes necessary to understand the lineshape ( strength function )
for s-wave strength in the unbound core+n system
…. We can learn a lot by reminding ourselves about the simple n+p sytem,
namely the bound state and scattering states of the deuteron
Physically, we will later imagine an incident
projectile, containing the core and neutron
of interest in the final state, plus other(s).
The strength function will be related to the overlap
of the wave functions of the neutron of interest
in the projectile and unbound ejectile systems