Focusing and photon flux measurements of the 2.88-nm radiation at the sample plane of the soft x-ray microscope, based on capillary discharge source

2015 ◽  
Author(s):  
M. Fahad Nawaz ◽  
Alexandr Jancarek ◽  
Michal Nevrkla ◽  
Przemyslaw Wachulak ◽  
Jiri Limpouch ◽  
...  
Keyword(s):  
Capillary Discharge ◽  
Photon Flux ◽  
Sample Plane ◽  
X Ray ◽  
Discharge Source ◽  
Flux Measurements

Development and demonstration of a water-window soft x-ray microscope using a Z-pinching capillary discharge source

2017 ◽  
Author(s):  
M. F. Nawaz ◽  
Alexandr Jancarek ◽  
Michal Nevrkla ◽  
Martin Jakub Duda ◽  
Ladislav Pina
Keyword(s):  
Capillary Discharge ◽  
X Ray ◽  
Water Window ◽  
Discharge Source

scholarly journals Table-Top Water-Window Microscope Using a Capillary Discharge Plasma Source with Spatial Resolution 75 nm

2020 ◽  
Vol 10 (18) ◽  
pp. 6373
Author(s):  
Tomáš Parkman ◽  
Michal Nevrkla ◽  
Alexandr Jančárek ◽  
Jana Turňová ◽  
Dalibor Pánek ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Large Scale ◽  
Fresnel Zone ◽  
Ccd Camera ◽  
Plasma Source ◽  
Capillary Discharge ◽  
Sample Plane ◽  
X Ray ◽  
Water Window ◽  
Imaging Results

We present a design of a compact transmission water-window microscope based on the Z-pinching capillary discharge nitrogen plasma source. The microscope operates at wavelength of 2.88 nm (430 eV), and with its table-top dimensions provides an alternative to large-scale soft X-ray (SXR) microscope systems based on synchrotrons and free-electron lasers. The emitted soft X-ray radiation is filtered by a titanium foil and focused by an ellipsoidal condenser mirror into the sample plane. A Fresnel zone plate was used to create a transmission image of the sample onto a charge-coupled device (CCD) camera. To assess the resolution of the microscope, we imaged a standard sample-copper mesh. The spatial resolution of the microscope is 75 nm at half-pitch, calculated via a 10–90% intensity knife-edge test. The applicability of the microscope is demonstrated by the imaging of green algae-Desmodesmus communis. This paper describes the principle of capillary discharge source, design of the microscope, and experimental imaging results of Cu mesh and biological sample.

Fast collisional capillary discharge source for soft x-ray production and applications

2001 ◽  
Author(s):  
Giuseppe Tomassetti ◽  
Libero Palladino ◽  
Antonio Ritucci ◽  
Lucia Reale ◽  
Tania Limongi ◽  
...  
Keyword(s):  
Capillary Discharge ◽  
X Ray ◽  
Discharge Source

Table-top water-window soft X-ray microscope using a Z-pinching capillary discharge source

2016 ◽  
Vol 11 (07) ◽  
pp. P07002-P07002 ◽  
Author(s):  
M.F. Nawaz ◽  
M. Nevrkla ◽  
A. Jancarek ◽  
A. Torrisi ◽  
T. Parkman ◽  
...  
Keyword(s):  
Capillary Discharge ◽  
X Ray ◽  
Water Window ◽  
Discharge Source

Role of the wall ablation in the operation of a 46.9 nmAr capillary discharge soft x-ray laser

2003 ◽  
Vol 43 (2) ◽  
pp. 88-93 ◽  
Author(s):  
A. Ritucci ◽  
G. Tomassetti ◽  
A. Reale ◽  
L. Palladino ◽  
L. Reale ◽  
...  
Keyword(s):  
Capillary Discharge ◽  
X Ray

A high-throughput assembly of beam-shaping channel-cut monochromators for laboratory high-resolution X-ray diffraction and small-angle X-ray scattering experiments

2021 ◽  
Vol 54 (3) ◽  
Author(s):  
Peter Nadazdy ◽  
Jakub Hagara ◽  
Petr Mikulik ◽  
Zdenko Zaprazny ◽  
Dusan Korytar ◽  
...  
Keyword(s):  
High Resolution ◽  
Small Angle ◽  
Photon Flux ◽  
Photon Flux Density ◽  
X Ray Diffraction ◽  
High Beam ◽  
X Ray ◽  
X Ray Scattering ◽  
Beam Collimation ◽  
Ray Scattering

A four-bounce monochromator assembly composed of Ge(111) and Ge(220) monolithic channel-cut monochromators with V-shaped channels in a quasi-dispersive configuration is presented. The assembly provides an optimal design in terms of the highest transmittance and photon flux density per detector pixel while maintaining high beam collimation. A monochromator assembly optimized for the highest recorded intensity per detector pixel of a linear detector placed 2.5 m behind the assembly was realized and tested by high-resolution X-ray diffraction and small-angle X-ray scattering measurements using a microfocus X-ray source. Conventional symmetric and asymmetric Ge(220) Bartels monochromators were similarly tested and the results were compared. The new assembly provides a transmittance that is an order of magnitude higher and 2.5 times higher than those provided by the symmetric and asymmetric Bartels monochromators, respectively, while the output beam divergence is twice that of the asymmetric Bartels monochromator. These results demonstrate the advantage of the proposed monochromator assembly in cases where the resolution can be partially sacrificed in favour of higher transmittance while still maintaining high beam collimation. Weakly scattering samples such as nanostructures are an example. A general advantage of the new monochromator is a significant reduction in the exposure time required to collect usable experimental data. A comparison of the theoretical and experimental results also reveals the current limitations of the technology of polishing hard-to-reach surfaces in X-ray crystal optics.

The effects of photon flux on energy spectra and imaging characteristics in a photon-counting x-ray detector

2013 ◽  
Vol 58 (14) ◽  
pp. 4865-4879 ◽  
Author(s):  
H-M Cho ◽  
H-J Kim ◽  
Y-N Choi ◽  
S-W Lee ◽  
H-J Ryu ◽  
...  
Keyword(s):  
Photon Counting ◽  
Energy Spectra ◽  
Photon Flux ◽  
X Ray ◽  
Imaging Characteristics

scholarly journals Determination of X-ray flux using silicon pin diodes

2009 ◽  
Vol 16 (2) ◽  
pp. 143-151 ◽  
Author(s):  
Robin L. Owen ◽  
James M. Holton ◽  
Clemens Schulze-Briese ◽  
Elspeth F. Garman
Keyword(s):  
Light Source ◽  
Energy Deposition ◽  
Photon Flux ◽  
Macromolecular Crystallography ◽  
Pin Diodes ◽  
Web Based ◽  
X Ray ◽  
Swiss Light Source ◽  
Flux Incident

Accurate measurement of photon flux from an X-ray source, a parameter required to calculate the dose absorbed by the sample, is not yet routinely available at macromolecular crystallography beamlines. The development of a model for determining the photon flux incident on pin diodes is described here, and has been tested on the macromolecular crystallography beamlines at both the Swiss Light Source, Villigen, Switzerland, and the Advanced Light Source, Berkeley, USA, at energies between 4 and 18 keV. These experiments have shown that a simple model based on energy deposition in silicon is sufficient for determining the flux incident on high-quality silicon pin diodes. The derivation and validation of this model is presented, and a web-based tool for the use of the macromolecular crystallography and wider synchrotron community is introduced.

Observation of soft X-ray amplification in Ne-like Ar by a capillary discharge

2005 ◽  
Author(s):  
Yuanli Cheng ◽  
WangQi ◽  
Yongpeng Zhao ◽  
Bohan Luan ◽  
Yinchu Wu
Keyword(s):  
Capillary Discharge ◽  
X Ray
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