Non-destructive, position-selective, and multi-elemental analysis method involving negative muons

Ninomiya, Kazuhiko

doi:10.14494/jnrs.19.8

Cited by 14 publications

(14 citation statements)

References 44 publications

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“…In order to obtain the elemental composition of the fibula, a few Certified Reference Materials (CRMs) of brass and bronze were measured with the same experimental setup. Similar experiments, with CRMs, were performed in the pulsed muon beam facilities at ISIS, Rutherford Appleton Laboratory (RAL), United Kingdom [ 6 , 43 ] and Japan Proton Accelerator Research Complex, Muon Science Establishment (J-PARC-MUSE) [ 4 ]. Hillier et al [ 43 ] has used the ratio of the intensities of the -X ray of an element to that of Cu, in bronze CRM, to directly compare with the certified composition.…”

Section: Methodsmentioning

confidence: 99%

“…The approach used by [ 6 ] is similar to the approach used in Energy Dispersive X-Ray Fluorescence (EDXRF) [ 44 ], where the calibration curve is obtained by plotting the counts per second (cps) under the X-ray peak of an element versus the percentage composition of the same element in the CRM. A calibration curve with the ratio of the intensities of the -X ray of an element to that of Cu, in bronze CRM, versus the ratio of the wt% of the element to that of Cu was used in [ 4 ] to determine the unknown elemental composition of archaeological samples. Since the above references use different methods to obtain the elemental compositions, we have used three different methods to see how well each method works: (i) Method 1: the intensity of the -X ray of an element normalized to the muon entrance counts is compared with the atomic percentage (at%) of the element to obtain a calibration curve; (ii) Method 2: the ratio of the intensities of the -X ray of an element to that of Cu, in bronze and brass CRMs, is compared to the ratio of the at% of the element to that of Cu to obtain the calibration curve; and (iii) Method 3: the ratio of the intensities of the -X ray of an element to that of Cu is corrected for the detector efficiency, branching ratio and the muon capture probability to directly obtain the ratio of at% of the element and Cu.…”

Section: Methodsmentioning

confidence: 99%

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The non-destructive investigation of a late antique knob bow fibula (Bügelknopffibel) from Kaiseraugst/CH using Muon Induced X-ray Emission (MIXE)

et al. 2023

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A knob bow fibula (Bügelknopffibel) of the Leutkirch type, which typologically belongs to the second half of the 4th and early 5th century CE, was excavated in 2018 in the Roman city of Augusta Raurica, present-day Kaiseraugst (AG, Switzerland). This was analyzed for the first time for its elemental composition by using the non-destructive technique of Muon Induced X-ray Emission (MIXE) in the continuous muon beam facility at the Paul Scherrer Institute (PSI). In the present work, the detection limit is 0.4 wt% with $$\sim$$ ∼ 1.5 hours of measurement time. The fibula was measured at six different positions, at a depth of 0.3–0.4 mm inside the material. The experimental results show that the fibula is made of bronze, containing the main elements copper (Cu), zinc (Zn), tin (Sn) and lead (Pb). The compositional similarities/differences between different parts of the fibula reveal that it was manufactured as two “workpieces”. One workpiece consists of the knob (13.0±0.6 wt% Pb), bow (11.9±0.4 wt% Pb) and foot (12.5 ± 0.9 wt% Pb). These show a higher Pb content, suggesting a cast bronze. The spiral (3.2 ± 0.2 wt% Pb), which is part of the other workpiece, has a comparatively lower Pb content, suggesting a forged bronze.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

The non-destructive investigation of a late antique knob bow fibula (Bügelknopffibel) from Kaiseraugst/CH using Muon Induced X-ray Emission (MIXE)

et al. 2023

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“…[15][16][17] used Muon Induced X-ray Emission (MIXE), while the Ref. [18] used Muonic Atom X-ray Spectroscopy (MAXRS); all of which describe the same technique), a non-destructive technique, which was developed more than 40 years ago [14,[19][20][21], has recently been used extensively with pulsed muon beams for elemental analysis [16,18,[22][23][24][25][26][27][28][29][30][31][32][33][34]. The advantage of this technique is that it is able to probe deep into the material, up to a few millimeters, and does not lead to a severe radiation damage of the sample.…”

Section: Introductionmentioning

confidence: 99%

Characterization of a Continuous Muon Source for the Non-Destructive and Depth-Selective Elemental Composition Analysis by Muon Induced X- and Gamma-rays

et al. 2022

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The toolbox for material characterization has never been richer than today. Great progress with all kinds of particles and interaction methods provide access to nearly all properties of an object under study. However, a tomographic analysis of the subsurface region remains still a challenge today. In this regard, the Muon Induced X-ray Emission (MIXE) technique has seen rebirth fueled by the availability of high intensity muon beams. We report here a study conducted at the Paul Scherrer Institute (PSI). It demonstrates that the absence of any beam time-structure leads to low pile-up events and a high signal-to-noise ratio (SNR) with less than one hour acquisition time per sample or data point. This performance creates the perspective to open this technique to a wider audience for the routine investigation of non-destructive and depth-sensitive elemental compositions, for example in rare and precious samples. Using a hetero-structured sample of known elements and thicknesses, we successfully detected the characteristic muonic X-rays, emitted during the capture of a negative muon by an atom, and the gamma-rays resulting from the nuclear capture of the muon, characterizing the capabilities of MIXE at PSI. This sample emphasizes the quality of a continuous beam, and the exceptional SNR at high rates. Such sensitivity will enable totally new statistically intense aspects in the field of MIXE, e.g., elemental 3D-tomography and chemical analysis. Therefore, we are currently advancing our proof-of-concept experiments with the goal of creating a full fledged permanently operated user station to make MIXE available to the wider scientific community as well as industry.

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“…One such non-destructive analysis method, X-ray fluorescence spectroscopy 1 , is widely used in various fields such as archaeology and planetary science; however, it can only provide the elemental composition only for the near-surface of the sample and is not suitable for accurate quantification, especially as regards light elements. In the last decade, a non-destructive elemental analysis method using negatively charged muons has been developed 2 . When a negative muon is captured in the irradiated material, a “muonic atom” is formed.…”

Section: Introductionmentioning

confidence: 99%

Non-destructive 3D imaging method using muonic X-rays and a CdTe double-sided strip detector

Chiu

Takeda

Kajino

et al. 2022

Sci Rep

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Elemental analysis based on muonic X-rays resulting from muon irradiation provides information about bulk material composition without causing damage, which is essential in the case of precious or otherwise unreachable samples, such as in archeology and planetary science. We developed a three-dimensional (3D) elemental analysis technique by combining the elemental analysis method based on negative muons with an imaging cadmium telluride double-sided strip detector (CdTe-DSD) designed for the hard X-ray and soft $$\gamma$$ γ -ray observation. A muon irradiation experiment using spherical plastic samples was conducted at the Japan Proton Accelerator Research Complex (J-PARC); a set of projection images was taken by the CdTe-DSD, equipped with a pinhole collimator, for different sample rotation angles. The projection images measured by the CdTe-DSD were utilized to obtain a 3D volumetric phantom by using the maximum likelihood expectation maximization algorithm. The reconstructed phantom successfully revealed the 3D distribution of carbon in the bulk samples and the stopping depth of the muons. This result demonstrated the feasibility of the proposed non-destructive 3D elemental analysis method for bulk material analysis based on muonic X-rays.

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Non-destructive, position-selective, and multi-elemental analysis method involving negative muons

Cited by 14 publications

References 44 publications

The non-destructive investigation of a late antique knob bow fibula (Bügelknopffibel) from Kaiseraugst/CH using Muon Induced X-ray Emission (MIXE)

The non-destructive investigation of a late antique knob bow fibula (Bügelknopffibel) from Kaiseraugst/CH using Muon Induced X-ray Emission (MIXE)

Characterization of a Continuous Muon Source for the Non-Destructive and Depth-Selective Elemental Composition Analysis by Muon Induced X- and Gamma-rays

Non-destructive 3D imaging method using muonic X-rays and a CdTe double-sided strip detector

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