Spheres¶
These sphere data sets [B38] contains samples with varied volume fractions of borosilicate glass spheres encased in a polypropylene matrix [B5]. The sphere diameter is a gaussian distribution ranging from 38-45 µm. The samples were scanned at both 25 mm and 60 mm sample to detector distance with the experimental conditions reported in the table below:
Instrument |
APS 2-BM-A fast tomo |
Energy |
27.4 keV |
Monochromator |
multi-layer |
Scan Range |
180 degree |
Number of Projections |
1500 |
White Fields |
10 before |
Dark Fields |
10 before |
Mode |
fly-scan |
Rotation Speed |
0.75 deg/s |
Sample Detector Distance |
60 mm |
Attenuator |
mm C + 1mm Glass |
Detector Name |
PCO edge |
Exposure Time |
0.0001 s |
Pixel Size |
0.65 µm |
Detector shutter mode |
global |
Detector Dimension x |
2560 |
Detector Dimension y |
2160 |
Objective Magnification |
Mitutoyo 10x |
Scintillator |
LuAG 10 µm |
The sphere data sets includes 6 tomographic data sets collected at different sample to detector distance and different concentrations as reported in the table below:
To load the data sets and perform a basic reconstruction using tomopy
tomopy recon --file-name tomo_00058.h5 --rotation-axis 1427
tomopy recon --file-name tomo_00059.h5 --rotation-axis 1440
tomopy recon --file-name tomo_00060.h5 --rotation-axis 1337
tomopy recon --file-name tomo_00061.h5 --rotation-axis 1316.5
tomopy recon --file-name tomo_00062.h5 --rotation-axis 1359.5
tomopy recon --file-name tomo_00063.h5 --rotation-axis 1322,5
To enable phase retrieval un-comment the appropriate setting in tomopy_rec.py
Tomo ID |
Concentration (%) |
Distance |
Sample Name |
Image |
Axis |
20 |
60 |
Somya_20_60 |
|
1427 |
|
30 |
60 |
Somya_30_60 |
|
1440 |
|
30 |
25 |
Somya_30_25 |
|
1337 |
|
20 |
25 |
Somya_20_25 |
|
1316.5 |
|
10 |
25 |
Somya_10_25 |
|
1359.5 |
|
5 |
25 |
Somya_5_25 |
|
1322.5 |
