# Deuterium + Antideuterium Annihilation

1. Jun 2, 2013

### Salman2

Does anyone have a reference for the details of energy and by-products produced in an annihilation reaction of a matter deuterium atom [np]e- with anti-matter antideuterium atom [p$^{\overline{}}$n$^{\overline{}}$]e+ (note: is there a better Latex code for putting bar to show antimatter ?)

As I understand the situation energy would be released two basic ways:

1. Interaction of the two leptons e-(electron) and e+ (positron) associated with the proton p and antiproton p$^{\overline{}}$

2. Interaction of the four nucleons (p,p$^{\overline{}}$,n,n$^{\overline{}}$) associated with the two atoms, one matter [np] the other antimatter [p$^{\overline{}}$n$^{\overline{}}$].

I am interested in the details, all the predicted steps such a reaction would take. Thank you

2. Jun 2, 2013

### Staff: Mentor

\bar{p}
$$\bar{p}$$
I don't think this annihilation reaction was ever studied - it is hard to produce significant amounts of antideuterium, and this is so hot that only a tiny fraction could be cooled and stored. And then you still have to add a positron.

As for all baryon/antibaryon annihilations, I would expect many pions, sometimes together with [a proton or a neutron] and [an antiproton or an antineutron]. The leptons could annihilate, too, but I don't think they have to.

I am sure there is software to simulate that.