Protonium atoms generation at antiprotons channeling in a LiH crystal

The possibility of formation of moving exotic protonium atoms at channeling of antiprotons in an ionic crystal of lithium hydride is proposed and investigated. For this purpose the probability of proton capture by moving antiprotons channeling in crystallographic H⁻–(1 1 1) planes and H⁻–(1 1 0) axes in ionic LiH crystal was calculated. It has been shown that the process of formation of moving exotic pp^– protonium atoms regarding antiprotons velocities has a resonance character depending on quantum states of these protonium atoms. It was shown that at the capture to higher quantum states the magnitude of resonance peaks increases and the resonance velocities decreases.