PPT Slide
Some general observations for transfer reactions
Light-ion transfer reactions with Radioactive Beams
The nucleon having to “stick” places kinematic restrictions on the population of states:
- the reaction Q-value is important (for Q large and negative, higher ? values are favoured)
- the degree (?-dependent) to which the kinematics favour a transfer is known as matching
Various types of transfer are employed typically, and using different mass probe-particles:
- light-ion transfer reactions: (probe? ? say) … (d,p) (p,d) (d,t) (d,3He) also (3He,a) etc.
- heavy-ion transfer reactions: e.g. (13C,12C) (13C,14C) (17O,16O) (9Be,8Be)
- two-nucleon transfer: e.g. (p,t) (t,p) (9Be,7Be) (12C,14C) (d,a)
- alpha-particle transfer (or a-transfer): e.g. (6Li,d), (7Li,t), (d,6Li), (12C,8Be)
Light-ion induced reactions give the clearest measure of the transferred ?,
and have a long history of application in experiment and refinement of the theory
Thus, they are attractive to employ as an essentially reliable tool, as soon as
radioactive beams of sufficient intensity become available (i.e. NOW)
To the theorist, there are some new aspects to address, near the drip lines.
To the experimentalist, the transformation of reference frames is a much bigger problem!
The new experiments need a hydrogen (or He) nucleus as target the beam is much heavier.
This is inverse kinematics, and the energy-angle systematics are completely different.