Photon-recoil imaging: Expanding the view of nonlinear x-ray physics

doi:10.1126/science.abc2622

GSTDTAP > 气候变化

DOI	10.1126/science.abc2622
	Photon-recoil imaging: Expanding the view of nonlinear x-ray physics
	U. Eichmann; H. Rottke; S. Meise; J.-E. Rubensson; J. Söderström; M. Agåker; C. Såthe; M. Meyer; T. M. Baumann; R. Boll; A. De Fanis; P. Grychtol; M. Ilchen; T. Mazza; J. Montano; V. Music; Y. Ovcharenko; D. E. Rivas; S. Serkez; R. Wagner; S. Eisebitt
	2020-09-25
发表期刊	Science
出版年	2020
英文摘要	The extension of nonlinear optics to the x-ray spectral domain is a promising direction in the development of x-ray spectroscopy. Although theoretical concepts of nonlinear x-ray spectroscopy were developed decades ago, scientists still struggle to implement them because of the elusive nature of nonlinear effects. Eichmann et al. now present atomic momentum spectroscopy (AMS), which is based on the detection of the scattered atom after momentum transfer from x-ray photons (see the Perspective by Pfeifer). The authors show how AMS can observe stimulated x-ray Raman scattering signals at the neon K edge on a single-atom level and distinguish them from other competing processes. These results pave the way for future nonlinear x-ray spectroscopy methods for the study of x-ray–matter interactions. Science , this issue p. [1630][1]; see also p. [1568][2] Addressing the ultrafast coherent evolution of electronic wave functions has long been a goal of nonlinear x-ray physics. A first step toward this goal is the investigation of stimulated x-ray Raman scattering (SXRS) using intense pulses from an x-ray free-electron laser. Earlier SXRS experiments relied on signal amplification during pulse propagation through dense resonant media. By contrast, our method reveals the fundamental process in which photons from the primary radiation source directly interact with a single atom. We introduce an experimental protocol in which scattered neutral atoms rather than scattered photons are detected. We present SXRS measurements at the neon K edge and a quantitative theoretical analysis. The method should become a powerful tool in the exploration of nonlinear x-ray physics. [1]: /lookup/doi/10.1126/science.abc2622 [2]: /lookup/doi/10.1126/science.abd6168
领域	气候变化 ; 资源环境
URL	查看原文
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/296521
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	U. Eichmann,H. Rottke,S. Meise,et al. Photon-recoil imaging: Expanding the view of nonlinear x-ray physics[J]. Science,2020.
APA	U. Eichmann.,H. Rottke.,S. Meise.,J.-E. Rubensson.,J. Söderström.,...&S. Eisebitt.(2020).Photon-recoil imaging: Expanding the view of nonlinear x-ray physics.Science.
MLA	U. Eichmann,et al."Photon-recoil imaging: Expanding the view of nonlinear x-ray physics".Science (2020).