Ray-tracing simulations of a bent crystal X-ray optics for imaging using laser–plasma X-ray sources

Ray-tracing simulations of an optical X-ray system based on a spherically bent crystal operating in Bragg configuration for monochromatic projection imaging of thin samples are presented, obtained using a code developed for that purpose. The code is particularly suited for characterizing experimental arrangements routinely used with laser-produced plasma X-ray sources. In particular, the spatial resolution of the imaging system was investigated and a careful study of the complex pattern of the X-ray backlighting beam was performed.

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Highly efficient, easily spectrally tunable X-ray backlighting for the study of extreme matter states

Laser and Particle Beams ◽

10.1017/s0263034609990322 ◽

2009 ◽

Vol 27 (4) ◽

pp. 601-609 ◽

Cited By ~ 10

Author(s):

B. Loupias ◽

F. Perez ◽

A. Benuzzi-Mounaix ◽

N. Ozaki ◽

M. Rabec ◽

...

Keyword(s):

Energy Density ◽

Ray Tracing ◽

Spatial Resolution ◽

Normal Incidence ◽

High Energy ◽

High Energy Density ◽

High Luminosity ◽

X Ray ◽

High Energy Density Physics ◽

Bent Crystal

AbstractAn improved high luminosity, easily spectrally tunable backlighting scheme based on a spherically bent crystal is considered in this paper. Contrary to the traditional backlighting scheme, we used crystal far from normal incidence, and the backlighter source was inside the Rowland circle. With the presented configuration, we obtained a spatial resolution up to 8 µm in the desired direction with an X-ray backlighting energy close to 5 keV. Detailed discussions and ray-tracing calculations show that with this convenient scheme resolution down to 5 µm can be achieved. A dedicated application to high energy density physics is presented: the radiography of shock compressed matter.

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Easy spectrally tunable highly efficient X-ray backlighting schemes based on spherically bent crystals

Laser and Particle Beams ◽

10.1017/s0263034604223138 ◽

2004 ◽

Vol 22 (3) ◽

pp. 289-300 ◽

Cited By ~ 8

Author(s):

T. PIKUZ ◽

A. FAENOV ◽

I. SKOBELEV ◽

A. MAGUNOV ◽

L. LABATE ◽

...

Keyword(s):

Ray Tracing ◽

Spatial Resolution ◽

Spectral Range ◽

Linear Transformation ◽

Field Of View ◽

X Ray ◽

Bent Crystal ◽

Highly Efficient ◽

Bent Crystals

New easy spectrally tunable backlighting schemes based on a spherically bent crystal are considered. Contrary to traditional backlighting scheme, in which the investigated objects should be placed between the backlighter and the crystal, for the considered schemes an object is placed downstream of the crystal, before the tangential or after the sagittal focus and an image of the object is recorded at the distance from the object corresponding to the needed magnification. The magnification is defined by the ratio of the distances from the sagittal focus to the detector and from the object to the sagittal focus. A ray-tracing modeling and experimental images of test meshes, obtained at incidence angles of the backlighter radiation of 10° and 22°, are presented. It is demonstrated that a simple linear transformation of the obtained astigmatic images allows reconstructing them as a stigmatic with an accuracy of 5–15%. For the spectral range around 9 Å a spatial resolution about 10 μm in a field of view of some square millimeters is achieved experimentally and confirmed by ray-tracing simulations.

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Interpretation of Pseudocontinua in the Spectra of Highly Ionized Atoms from Tm To W in Laser Produced Plasmas

International Astronomical Union Colloquium ◽

10.1017/s0252921100085766 ◽

1984 ◽

Vol 86 ◽

pp. 215-218

Author(s):

P. Mandelbaum ◽

M. Klapisch ◽

A. Krasnitz ◽

A. Zigler

Keyword(s):

Spectral Range ◽

Simple Structure ◽

Complex Pattern ◽

X Ray ◽

Long Wavelength ◽

Line Identification ◽

Laser Produced Plasma ◽

Resonant Transitions ◽

Wavelength Side

X-ray spectra of highly ionized atoms (Tm to Pt) emitted from Laser produced plasma are characterized by the simple structure given by resonant transitions of the Nil-like ions, accompanied by the more complex pattern of satellite transitions emitted by ions in the neighbouring states of ionization. An analysis of these structures has been given recently for the satellites of the 3d10 − 3d94p[l] and of the 3p63dl0 − 3p53d104s, 4d[2] transitions of the Nil-like inns. However, most of the radiation emitted in this spectral range [4–10Å] concentrate in a wide, rather structureless satellite feature in the long wavelength side of the 3d10 −3d94f Ni-I like transition, on which some lines are superimposed. Line identification has been achieved successfully with the methods of [1], [2] and will be published separately. In this communication, we deal only with the pseudocontinuum.

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New challenges in ray tracing simulations of X-ray optics

Journal of Physics Conference Series ◽

10.1088/1742-6596/425/16/162003 ◽

2013 ◽

Vol 425 (16) ◽

pp. 162003 ◽

Cited By ~ 3

Author(s):

M Sánchez del Río

Keyword(s):

Ray Tracing ◽

Ray Optics ◽

X Ray ◽

New Challenges

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SPOTX a ray tracing software for X-ray optics

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:20012103 ◽

2001 ◽

Vol 11 (PR2) ◽

pp. Pr2-527-Pr2-531 ◽

Cited By ~ 12

Author(s):

T. Moreno ◽

M. Idir

Keyword(s):

Ray Tracing ◽

Ray Optics ◽

X Ray

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Characterization and on-line adjustment of the sagittal-bent Laue crystal profile

Journal of Synchrotron Radiation ◽

10.1107/s1600577518008056 ◽

2018 ◽

Vol 25 (5) ◽

pp. 1346-1353

Author(s):

Weiwei Dong ◽

Quan Cai ◽

Fugui Yang ◽

Xu Liu ◽

Jiaowang Yang ◽

...

Keyword(s):

Ray Tracing ◽

Crystal Surface ◽

Great Influence ◽

High Energy ◽

Double Crystal ◽

X Ray ◽

Bent Crystal ◽

On Line ◽

Condition Adjustment ◽

Anticlastic Curvature

The sagittal-bent Laue monochromator can provide an ideal way to focus high-energy X-ray beams. However, the anticlastic curvature induced by sagittal bending has a great influence on the crystal performance. Thus, characterizing the bent-crystal shape is very important for predicting the performance of the bent-crystal monochromator. In this paper the crystal profile is measured by off-line optical metrology and on-line X-ray experiments. The off-line results showed that the bent-crystal surface could be well fitted to a saddle surface apart from a redundant cubic term which was related to the different couples applied on the crystal. On-line characterization of the meridional and the sagittal radius of the bent crystal includes double-crystal topography and ray-tracing measurement. In addition, the double-crystal topography experiment could be used as a quick diagnostic method for the bending condition adjustment. The sagittal radius of the bent crystal was characterized through a ray-tracing experiment by using a particularly designed tungsten mask. Moreover, rocking curves under different bending conditions were measured as well. The results were highly consistent with analytical results derived from the elastic theory. Furthermore, radii along different vertical positions under various bending conditions were measured and showed a quadratic relationship between the vertical positions and the meridional radii.

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