Monochromatic focusing of subpicosecond x-ray pulses in the keV range

Autor:	Ingo Uschmann, T. Missalla, Eckhart Förster, D. von der Linde, G. Jenke
Rok vydání:	1999
Předmět:	Diffraction Physics Spectrometer business.industry Astrophysics::High Energy Astrophysical Phenomena Physics::Optics X-ray optics Pulse duration Laser pumping Laser law.invention Optics law Picosecond Crystal optics business Instrumentation
Zdroj:	Review of Scientific Instruments. 70:1288-1299
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1149587
Popis:	An effective x-ray optical method to focus keV x-ray pulses shorter than one picosecond by using spherically or toroidally bent crystals is presented. The spectral, spatial, and time-dependent properties of focusing by two-dimensional bent crystals are calculated by considering geometrical effects, physical limitation in high performance crystal optics, and reflectivities obtained by x-ray diffraction theory. These properties are compared with first experimental results of focusing x rays from a plasma created by a laser pulse with 4.5 mJ energy and 100 fs pulse length. The x-ray signals, simultaneously obtained from a von Hamos spectrometer and two-dimensional bent crystals are compared and found in good agreement with theoretical data. The possibilities and aspects of laser pump x-ray probe experiments using this type of x-ray optics system and currently available laser systems are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2c68a1a659ff1f803bca550628b42e6e https://doi.org/10.1063/1.1149587 Zobrazit plný text záznamu