Speaker
Alexander Shchagin
(Belgorod State University, Belgorod, Russia Kharkov Institute of Physics and Technology, Kharkov, Ukraine)
Description
In the charge-exchange accelerators, negatively charged accelerated ions lose their electrons in a charge-exchange target and become positively charged ions. In the present report, radiation arising at charge-exchange of ions a thin transparent charge-exchange target is considered. It is shown that the spectral and angular distribution of the number of quanta emitted by the hydrogen ion that change its charge from -1 to +1 is described by the formula
$$
\frac{dN}{d\Omega d\omega}=\frac{e^2}{\hbar c}\frac{\sin^2 \theta}{\pi^2\omega\left( \frac{c}{v}-\cos\theta\right)^2}~~~~~~~~~~~~~~(1)
$$
where $dN$ is the number of quanta with frequency $\omega$ emitted in the spectral range $d\omega$ into the solid angle $d\Omega, e^2/\hbar c=1/137$, $\theta$ is the observation angle, $v$ is the incident ion velocity. It is interesting that properties of the distribution (1) are independent of the properties of the charge-exchange target if it is thin enough. The applications of such charge-exchange radiation for diagnostics of the charge-exchange process in charge-exchange accelerators are proposed and discussed. Observation of the charge-exchange radiation from the beam of non-relativistic incident ions can be performed by a photon detector installed at observation angle $\theta$ close to $\pi/2$ , where the distribution (1) has the maximum. The observed frequency range should be out of the spectral peaks of characteristic X-ray radiation of the charge-exchange target atoms.
Primary author
Alexander Shchagin
(Belgorod State University, Belgorod, Russia Kharkov Institute of Physics and Technology, Kharkov, Ukraine)
