Editing Compton scattering (section)

=== Non-linear inverse Compton scattering ===
[[Non-linear inverse Compton scattering]] (NICS) is the scattering of multiple low-energy photons, given by an intense electromagnetic field, in a high-energy photon (X-ray or gamma ray) during the interaction with a charged particle, such as an electron.<ref name=":0">{{Cite journal|last1=Di Piazza|first1=A.|last2=Müller|first2=C.|last3=Hatsagortsyan|first3=K. Z.|last4=Keitel|first4=C. H.|date=2012-08-16|title=Extremely high-intensity laser interactions with fundamental quantum systems|url=https://link.aps.org/doi/10.1103/RevModPhys.84.1177|journal=Reviews of Modern Physics|language=en|volume=84|issue=3|pages=1177–1228|doi=10.1103/RevModPhys.84.1177|issn=0034-6861|arxiv=1111.3886|bibcode=2012RvMP...84.1177D|s2cid=118536606}}</ref> It is also called non-linear Compton scattering and multiphoton Compton scattering. It is the non-linear version of inverse Compton scattering in which the conditions for multiphoton absorption by the charged particle are reached due to a very intense electromagnetic field, for example the one produced by a [[laser]].<ref>{{Cite journal|last=Meyerhofer|first=D.D.|date=1997|title=High-intensity-laser-electron scattering|url=https://ieeexplore.ieee.org/document/641308|journal=IEEE Journal of Quantum Electronics|volume=33|issue=11|pages=1935–1941|doi=10.1109/3.641308|bibcode=1997IJQE...33.1935M}}</ref>

Non-linear inverse Compton scattering is an interesting phenomenon for all applications requiring high-energy photons since NICS is capable of producing photons with energy comparable to the charged particle rest energy and higher.<ref>{{Cite journal|last=Ritus|first=V. I.|date=1985|title=Quantum effects of the interaction of elementary particles with an intense electromagnetic field|url=http://link.springer.com/10.1007/BF01120220|journal=Journal of Soviet Laser Research|language=en|volume=6|issue=5|pages=497–617|doi=10.1007/BF01120220|s2cid=121183948|issn=0270-2010}}</ref> As a consequence NICS photons can be used to trigger other phenomena such as pair production, Compton scattering, [[nuclear reaction]]s, and can be used to probe non-linear quantum effects and non-linear [[Quantum electrodynamics|QED]].<ref name=":0" />