Energy levels of the HE4 nucleus

alemsalem
Messages
173
Reaction score
5
what i mean is could it be possible for an alpha particle to acquire energy (by collision or from emission) and subsequently emit a gamma ray?? or does only have one (ground) state??
 
Physics news on Phys.org
There is always just one ground state. I mean, there could be a degeneracy, but there energy is the same. Or did you mean just one state, which is then obviously a ground state?

But yeah, He4, just like any other nucleus, will have excited states, and will absorb and emit gamma radiation. I have no idea what sort of a spectrum it has... I'm sure you could find it somewhere, though. He4 should be pretty well explored, both experimentally and theoretically.
 
i was asking if it had a spectrum, or just one energy level,, thanks for the answer :)
 
Helium-4 has only a single bound state.
 
Toponium is a hadron which is the bound state of a valance top quark and a valance antitop quark. Oversimplified presentations often state that top quarks don't form hadrons, because they decay to bottom quarks extremely rapidly after they are created, leaving no time to form a hadron. And, the vast majority of the time, this is true. But, the lifetime of a top quark is only an average lifetime. Sometimes it decays faster and sometimes it decays slower. In the highly improbable case that...
I'm following this paper by Kitaev on SL(2,R) representations and I'm having a problem in the normalization of the continuous eigenfunctions (eqs. (67)-(70)), which satisfy \langle f_s | f_{s'} \rangle = \int_{0}^{1} \frac{2}{(1-u)^2} f_s(u)^* f_{s'}(u) \, du. \tag{67} The singular contribution of the integral arises at the endpoint u=1 of the integral, and in the limit u \to 1, the function f_s(u) takes on the form f_s(u) \approx a_s (1-u)^{1/2 + i s} + a_s^* (1-u)^{1/2 - i s}. \tag{70}...
Back
Top