High spatial-resolution X-ray CT measurement of heavy-element-doped partially molten rocks.
Inquiry number
SOL-0000001105
Beamline
BL47XU (Micro-CT)
Scientific keywords
| A. Sample category | inorganic material |
|---|---|
| B. Sample category (detail) | insulator, ceramics, solid-state crystal, crystal, mineral,rock |
| C. Technique | absorption and its secondary process |
| D. Technique (detail) | |
| E. Particular condition | 3D imaging (cf. CT), room temperature |
| F. Photon energy | X-ray (4-40 keV) |
| G. Target information | dislocation, strain, morphology |
Industrial keywords
| level 1---Application area | others |
|---|---|
| level 2---Target | |
| level 3---Target (detail) | |
| level 4---Obtainable information | density, surface,interface, crack, crevice, structure, molphology |
| level 5---Technique | imaging |
Classification
M60.20 X-ray CT
Body text
Partially molten rocks are one of the important constituents of the Earths interior. 3D structure of crystals and melt influences physical properties of the partially molten rocks. In order to elucidate such 3D structure, we doped the heavy elements to the rock specimens and partially melted them under high temperature and high pressure conditions; and then we observed the samples by using the high spatial-resolution (~1 µm) X-ray CT system at BL47XU. Figure shows the one slice of X-ray CT images of the sample including 2wt% PbO. Since the linear attenuation coefficient of the melt parts where PbO is highly concentrated is higher than that of crystal (pyroxene named diopside), the melt parts and crystal parts are easily distinguished.
A slice of the X-ray CT images of the artificial partially molten rock including PbO 2wt%. Bright and gray parts indicate partial melt (glass) and diopside crystals, respectively. Black parts (holes) indicate pores filled with air.
Source of the figure
Bulletin from SPring-8
Bulletin title
user experimental report 2002A
Page
263
Technique
Source of the figure
No figure
Required time for experimental setup
1 shift(s)
Instruments
| Instrument | Purpose | Performance |
|---|---|---|
| X-ray CT system | obtaining internal structure of materials | spatial resolution of 1µm |
References
| Document name |
|---|
| user experimental report 2002A |
Related experimental techniques
Questionnaire
The measurement was possible only in SPring-8. Impossible or very difficult in other facilities.
This solution is an application of a main instrument of the beamline.
Ease of measurement
Easy
Ease of analysis
Middle
How many shifts were needed for taking whole data in the figure?
Less than one shift