# Positron generator

1. Aug 6, 2013

### piddilingjr

if you have a beam of high energy electrons ( enough energy to create positrons) that hit plate in a vacuum that was positively charged could you produce anit particles without the particels annihilating it self (hence the vacuum) and have the positivly charge particles suspended in a magnetic field? and could you have a 100% energy to matter generator. for example puting in 5000 watts and getting out 5.5632e-14 kgs of mass? direct e=mc2 or would this system be partly efficient

2. Aug 6, 2013

### rgujju

You could convert 100% of the mass to energy or vice versa.. BUT not with the technology that exists today or atleast for the next 15-20 years. Correct me if i am wrong but as of today u can convert i guess 0.7 % of mass to energy in the worlds best colliders.
When u burn a paper u are converting around 0.001% or even lesser!

3. Aug 6, 2013

### Staff: Mentor

It's worth a taking a moment to do the math before posting... Not everyone reading your post will understand that by "or even lesser", you mean five decimal orders of magnitude. That's the difference between a glass of water and a decent-sized swimming pool.

Besides, 0.00000001% makes your point so much better

4. Aug 6, 2013

### Staff: Mentor

There are two questions here: generating positrons, and storing/controlling them to do something interesting with them. If you google for "positron generation" and "positron storage" you'll find a bunch of interesting links, get a sense of just how effective the current techniques are.

No matter what we do, the total amount of energy that we put into creating the initial beam of high-energy electron will far exceed the energy of the massive particles created by the collisions of that beam with its target.