SPring-8, the large synchrotron radiation facility

Inquiry number

SOL-0000001107

Beamline

BL20B2 (Medical and Imaging I)

Scientific keywords

A. Sample category	inorganic material
B. Sample category (detail)	insulator, ceramics, solid-state crystal, crystal
C. Technique	absorption and its secondary process
D. Technique (detail)
E. Particular condition	3D imaging (cf. CT)
F. Photon energy	X-ray (4-40 keV)
G. Target information	chemical state, crystal structure, dislocation, strain, elemental composition

Industrial keywords

level 1---Application area	industrial material, others
level 2---Target	Concrete
level 3---Target (detail)
level 4---Obtainable information	crack, crevice, chemical state, structure, element distribution, molphology
level 5---Technique	imaging

Classification

A80.30 inorganic material, A80.40 environmental materials, M60.20 X-ray CT

Body text

We succeeded in measuring the three-dimensional Cs concentration maps with high resolution under the nondestructive condition. This technique is based on the subtraction method and we acquired two set of X-ray CT images with two different photon energies just below and above the Cs-K absorption edge and obtained the differential images by subtraction. This subtraction method is known as a technique to obtain the qualitative information of the spatial distribution of elements. We performed some data corrections and made it possible to obtain quantitative maps of element concentration. Furthermore, by using the high spatial resolution X-ray CT system developed at BL20B2 of SPring-8, high spatial resolution of 20 m was achieved.

Two-dimensional and three-dimensional maps of Cs₂O concentration in the Cs-doped partially molten granite sample

[ S. Ikeda, T. Nakano, A. Tsuchuyama, K. Uesugi, Y. Suzuki, K. Nakamura, Y. Nakashima and H. Yoshida, American Mineralogist 89, 1304-1313 (2004), Fig. 3(b), 3(f),
©2004 Mineralogical Society of America ]

Source of the figure

Original paper/Journal article

Journal title

S. Ikeda et al., Am. Mineral. 89, 1304 (2004)

Figure No.

Technique

Source of the figure

No figure

Required time for experimental setup

1 shift(s)

Instruments

Instrument	Purpose	Performance
X-ray CT system	obtain internal structure of material	spatial resolution of 10um

References

Document name
S. Ikeda et al., Am. Mineral. 89, 1304 (2004)

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

Middle

Ease of analysis

Middle

How many shifts were needed for taking whole data in the figure?

Two-three shifts