Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.
-
Upload
calvin-townsend -
Category
Documents
-
view
216 -
download
1
Transcript of Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.
![Page 1: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/1.jpg)
Advantages of a
Grazing Incidence Monochromator in the
Extreme Ultraviolet
By Sarah Barton
![Page 2: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/2.jpg)
2
Thin Films
We “grow” films with thicknesses in the range of 200-400 Å
We measure reflectance properties of different films in the extreme ultraviolet
Methods used for creating films include sputtering and evaporation
![Page 3: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/3.jpg)
3
Past Projects and Applications
• ESA Mars Express Probe, Venus Express Probe
• Astronomy• Microscopy• Plasma Diagnostics
![Page 4: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/4.jpg)
4
The Advanced Light Source at Lawrence Berkeley National Laboratories
• Synchrotron
• High Intensity
• Shorter Wavelengths
• Continuous Spectrum
• Many Different Gratings
- Including Grazing Incidence
![Page 5: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/5.jpg)
5
What is a What is a Grazing Incidence Grazing Incidence Monochromator Monochromator
Anyway?Anyway?
![Page 6: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/6.jpg)
6
Set-Up
-- Insert GIMS here
![Page 7: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/7.jpg)
7
Differences• Near-Grazing vs. Near-Normal Angles
• More Reflective for Higher Wavelengths
• Possible Higher Intensity
• Smaller Size
![Page 8: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/8.jpg)
8
Reflection and Absorption
• 30 Å
• Pt
![Page 9: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/9.jpg)
9
Why We Care
Reflectance at 5 degrees
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 5 10 15 20 25 30 35
Wavelength (nm)
% R
efle
ctan
ce
Reflectance at 85 degrees
-5.00E-03
0.00E+00
5.00E-03
1.00E-02
1.50E-02
2.00E-02
2.50E-02
3.00E-02
3.50E-02
4.00E-02
4.50E-02
0 5 10 15 20 25 30 35
Wavelength (nm)
% R
efle
ctan
ce
![Page 10: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/10.jpg)
10
Benefits
• Less Absorption
• Higher Wavelengths
• 2 Sources
• And…
![Page 11: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/11.jpg)
11
Convenience!
The Under Ground Lab
is a lot closer than
California!
![Page 12: Advantages of a Grazing Incidence Monochromator in the Extreme Ultraviolet By Sarah Barton.](https://reader030.fdocuments.in/reader030/viewer/2022013004/56649ede5503460f94beec95/html5/thumbnails/12.jpg)
12
Acknowledgements
• Dr. Alexander Shevelko
• Dr. Turley
• Dr. Allred
• BYU Thin Films Group
• NASA Rocky Mountain Consortium
• John Ellsworth