Can Positively Charged Particles Gain Electrons from Negatively Charged Foils?

[Strat-O]

Hello,

I'm thinking of some alternative ways of accelerating particles. I know that it's quite common to have accelerated particles pass along a positively charged foil which strips the electrons of the particles and reverses the particle's polarity.

Is there a way to do the opposite? I.e. have positively charged particles pass along a negatively charged foil to negatively charge the particles?

My (perhaps naive) thinking is if you could do this you could simplify an induction linear accelerator and allow it to run continuously instead of in a pulsed mode. The idea would be alternate the negative and positive foils. Place a foil abeam of a core and an oppositely charged foil halfway between two cores. And in operation a particle is attracted to a core and once it arrives it's polarity gets reversed and it gets repelled from the same core it was attracted too. Meanwhile, the next core in line is weakly repelling the particle until it gets halfway and it's polarity gets reversed suddenly it's attracted to it. (the previous core is also attracting it but the particle maintains its momentum and as it nears the next core the attraction gets stronger.

Marlin

 

[Strat-O]

As I research this further I see that there is a lot of information on electron stripping foils but almost no information on foils that "donate" electrons to moving particles. Anyone know of a way to negatively charge a nucleus in motion without diminishing its momentum appreciably?

I would have thought that having a positively charged particle pass next to a negatively charged foil, that the particle could gain enough electrons to at least become neutral and perhaps gain one or two more to become negative. However, I find no evidence of this in my literature searching.

Marlin