2024-11-25 韓国基礎科学研究院(IBS)
＜関連情報＞
- https://www.ibs.re.kr/cop/bbs/BBSMSTR_000000000738/selectBoardArticle.do?nttId=25285&pageIndex=1&searchCnd=&searchWrd=
- https://www.nature.com/articles/s41566-024-01550-8
マルチPWレーザーで全光学的非線形コンプトン散乱を実現 All-optical nonlinear Compton scattering performed with a multi-PW laser
Mohammad Mirzaie, Calin Ioan Hojbota, Do Yeon Kim, Vishwa Bandhu Pathak, Tae Gyu Pak, Chul Min Kim, Hwang Woon Lee, Jin Woo Yoon, Seong Ku Lee, Yong Joo Rhee, Marija Vranic, Óscar Amaro, Ki Yong Kim, Jae Hee Sung & Chang Hee Nam
Nature Photonics Published:14 October 2024
DOI:https://doi.org/10.1038/s41566-024-01550-8
Abstract
Light–matter interactions driven by ultrahigh-intensity lasers have great potential to uncover the physics associated with quantum electrodynamics (QED) processes occurring in neutron stars and black holes. The Compton scattering between an ultra-relativistic electron beam and an intense laser can reveal a new interaction regime, known as strong-field QED. Here we present an experimental demonstration of nonlinear Compton scattering in a strong laser field, in which a laser-accelerated multi-gigaelectronvolt electron scatters off hundreds of laser photons and converts them into a single gamma-ray photon with several-hundred-megaelectronvolt energy. Along with particle-in-cell (PIC)-QED simulations and analytical calculations, our experimental measurement of gamma-ray spectra verifies the occurrence of Compton scattering in the strongly nonlinear regime, paving the road to examine nonlinear Breit–Wheeler pair production and QED cascades.
