  We consider physical processes caused by the twisted photons for a wide range
of energy scales, from optical (eV) to nuclear (MeV) to high-energy gamma-rays
(TeV). We demonstrate that in order to satisfy angular momentum conservation,
absorption of a twisted photon leads to a transverse recoil of the final
particle or a system of particles leading to increased threshold energy
required for the reaction to proceed. Modification of the threshold energy is
predicted for (a) Photo-absorption on colds trapped ions of $^{40}$Ca, along
with emerging new transverse-motion sidebands, (b) photo-disintegration of
deuterium and (c) photo-production of electron-positron pairs in astrophysics
environment.
