期刊
APL PHOTONICS
卷 4, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5085810
关键词
-
资金
- National Science Centre (NCN) [UMO-2015/17/B/ST7/03718, UMO-2015/19/B/ST3/00435]
- European Union's Horizon 2020 research and innovation program Laserlab-Europe IV [654148]
- Ministry of Education, Youth and Sports MEYS CR [LTT17015]
We present a possibility of reaching higher energy absorption edges of organic materials, beyond the carbon K-edge, in the near edge Xray absorption fine structure (NEXAFS) spectroscopy technique using a compact laser-produced plasma soft X-ray (SXR) source based on a double-stream gas puff target. The source was optimized for emission in the SXR spectral range from 1.5 to 5 nm wavelength using the krypton/helium target. The emission spectrum of the source and the absorption spectrum of the investigated sample were measured simultaneously by means of a grazing incidence spectrometer, equipped with a single, large aperture diffractive element. Based on both spectra, the optical density was computed for the silicon nitride membranes in a transmission mode, to reveal the NEXAFS features near the nitrogen K-edge. Moreover, due to spectral narrowing of the SXR emission by the use of titanium filter, reaching the titanium L-edge was also possible. Multiple SXR pulse data were compared to single SXR pulse (single-shot) data as well as to the numerical simulations. In this paper, the detailed information about the source, spectroscopy system, and the results of NEXAFS measurements is presented and discussed. (C) 2019 Author(s).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据