Steering of high-energy charged-particle beams by bent single crystals

The theory of the scattering-induced feeding-in in bent crystals

“…Steering of particle beams by means of channeling in bent crystals [1] is rapidly evolving technique for particle accelerators [2]. The particle motion in a crystal is influenced by a series of collisions with the crystal constituents, which may cause particle transitions between channeled and random states.…”

Focusing of parametric X-ray radiation

“…Therefore the PXR will be focused at two points 1 F and 2 F at the axis f at an angular distance of about Apart from the PXR emission, the particles moving through the crystalline plate ionize crystal atoms and thus make them emit the characteristic X-ray radiation (CXR). The CXR is isotropic and not focused, but it exists at points 1 F and 2 F , too.…”

“…[1]. The steering can be realized for particles which are traveling through a long bent crystal in the channeling regime [2]. The channeling particles may be deflected, if the crystal is bent smoothly enough.…”

“…− radian [2]. The main features of PXR emission, the positions of points 1 F , 2 F and the properties of focused PXR will change insignificantly at such a small misalignment.…”

“…However, the motion of these particles in a long crystal can differ from the motion of protons. For example, a significant part of high-energy protons can move through a long bent crystal in the channeling regime [2,[4][5][6][7][8][9]. But electrons strongly scatter at channeling.…”