A single-shot spectrograph for the soft x-ray region

Jasny, J.; Teubner, U.; Theobald, W.; Wülker, C.; Bergmann, J.; Schäfer, F. P.

doi:10.1063/1.1144851

Cited by 56 publications

(31 citation statements)

References 16 publications

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“…The nearly collimated XUV-probe beam is irradiated under grazing incidence onto a toroidal mirror which has an imaging length of 2f = 360 mm [37]. The mirror is covered with gold, has a size of 20 × 100 mm and radii of curvature of 24.1 and 5375.3 mm.…”

Section: High-harmonic Generationmentioning

confidence: 99%

Ultrafast electronic spectroscopy for chemical analysis near liquid water interfaces: concepts and applications

et al. 2009

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Electron spectroscopy for chemical analysis (ESCA) being conceptually a photoelectron spectroscopy is established as a chemically specific probe mostly for surface analysis. Liquid phase ESCA for volatile liquids has become possible through the development of the liquid microjet technique in vacuum enabling the measurement of liquid interface photoelectron emission at the high vapor pressure of volatile liquids. Recently we have been able to add the dimension of time to the liquid interface ESCA technique employing high-harmonics soft X-ray and UV/near IR femtosecond pulses in combination with liquid water micro beams in vacuum. The concepts as well as technical details are outlined and several characteristic applications are high-

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Section: High-harmonic Generationmentioning

confidence: 99%

Ultrafast electronic spectroscopy for chemical analysis near liquid water interfaces: concepts and applications

et al. 2009

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“…10, details can be found in Ref. [54]. A large area transmission grating with a line density of 1000 lines/mm will be used.…”

Section: Methodsmentioning

confidence: 99%

Thomson scattering from near-solid density plasmas using soft X-ray free electron lasers

Höll

Bornath

Cao

et al. 2007

High Energy Density Physics

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We discuss a collective Thomson scattering experiment at the VUV free electron laser facility at DESY (FLASH) to diagnose warm dense matter at near-solid density. The plasma region of interest marks the transition from an ideal plasma to a correlated and degenerate many-particle system and is of current interest, e.g., in ICF experiments or laboratory astrophysics. Plasma diagnosis of such plasmas is a longstanding issue which is addressed here using a pumpeprobe scattering experiment to reveal the collective electron plasma mode (plasmon) using the highbrilliance radiation to probe the plasma. Distinctive scattering features allow one to infer basic plasma properties. For plasmas in thermal equilibrium the electron density and temperature are determined from scattering off the plasmon mode.

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“…For the first experiment a focusing spectrometer based on a transmission grating was used [19], but artifacts arising from the support grid of the grating and the need for improved alignment and higher efficiency led to design and construction of a new spectrometer [20]. This spectrometer employs a toroidal mirror together with an 800 lines/mm variable line spacing reflection grating, accepts a solid angle of , obtains a resolution of The samples are positioned in the focus of the FEL beam.…”

Section: Methodsmentioning

confidence: 99%

Soft X-ray scattering using FEL radiation for probing near-solid density plasmas at few electron volt temperatures

Toleikis

Fäustlin

Cao

et al. 2010

High Energy Density Physics

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We report on soft x-ray scattering experiments on cryogenic hydrogen and simple metal samples. As a source of intense, ultrashort soft x-ray pulses we have used free-electron laser radiation at 92 eV photon energy from FLASH at DESY, Hamburg. X-ray pulses with energies up to 150 µJ and durations 15-50 fs provide interaction with the sample leading simultaneously to plasma formation and scattering. Experiments exploiting both 1 of these interactions have been carried out, using the same experimental setup. Firstly, recording of soft x-ray inelastic scattering from near-solid density hydrogen plasmas at few electron volt temperatures confirms the feasibility of this diagnostics technique.Secondly, the soft x-ray excitation of few electron volt solid-density plasmas in bulk metal samples could be studied by recording soft x-ray line and continuum emission integrated over emission times from fs to ns. PACS: 52.25.Os, 52.70.La, 41.60.Cr Keywords: free-electron laser, soft x-ray spectroscopy, inelastic x-ray scattering, stronglycoupled plasmas, ultrafast processes, pump-probe experiments 2

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A single-shot spectrograph for the soft x-ray region

Cited by 56 publications

References 16 publications

Ultrafast electronic spectroscopy for chemical analysis near liquid water interfaces: concepts and applications

Ultrafast electronic spectroscopy for chemical analysis near liquid water interfaces: concepts and applications

Thomson scattering from near-solid density plasmas using soft X-ray free electron lasers

Soft X-ray scattering using FEL radiation for probing near-solid density plasmas at few electron volt temperatures

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