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

2019 ◽  
Vol 19 (0) ◽  
pp. 8-13 ◽  
Author(s):  
Kazuhiko NINOMIYA
2021 ◽  
Author(s):  
I-Huan Chiu ◽  
Shin’ichiro Takeda ◽  
Meito Kajino ◽  
Atsushi Shinohara ◽  
Miho Katsuragawa ◽  
...  

Abstract 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 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.


2021 ◽  
Author(s):  
Felipe Ferri Hilario ◽  
Matheus Lima de Mello ◽  
Edenir Rodrigues Pereira-Filho

With the use of Laser Induced Breakdown Spectroscopy (LIBS), fast and semi non-destructive elemental analysis of ball-point pen writings has been performed directly from paper surfaces, aiming to obtain maximum differentiation between pens with a minimum number of pulses.


1999 ◽  
Author(s):  
Q. Ni ◽  
J. D. King ◽  
Y.-X. Tao

Abstract Nuclear magnetic resonance (NMR) sensors are used to determine the time variation of solid mass for a packed ice bed in an experiment of convective melting under non-thermal equilibrium conditions. The paper describes the basic experimental technique for NAFTM apparatus and feasibility for determining the solid volume fraction and ultimately the melting rate. The NMR technique provides an effective, non-destructive method for multiphase fluid study where phase change is one of the important physical phenomena. The results show a good agreement of data obtained by the NMR method with those from image-analysis method.


2007 ◽  
Vol 1047 ◽  
Author(s):  
Jose Luis Ruvalcaba ◽  
Sandra Zetina ◽  
Helena Calvo del Castillo ◽  
Elsa Arroyo ◽  
Eumelia Hernández ◽  
...  

AbstractThe Grolier Codex has been a controversial document ever since its late discovery in 1965. Because of its rare iconographical content and its unknown origin, specialists are not keen to assure its authenticity that would set it amongst the other tree known Maya codes in the world (Dresden, Paris Codex and Madrid Codex).The document that has been kept in the Museo Nacional de Antropología in Mexico City, after its exposure in 1971 at the Grolier Club of New York, has been analyzed by a set of non-destructive techniques in order to characterize its materials including paper fibers, preparation layer and colors composition. The methodology included UV imaging, IR reflectography and optic microscopy examinations as well as Particle Induced X-ray Emission (PIXE) and Rutherford Backscattering Spectrometry (RBS) using an external beam setup for elemental analysis. All the measurements were carried out at 3MV Pelletron Accelerator of the Instituto de Física, UNAM. The aim of this work is to verify if the materials in the Grolier Codex match those found for other pre-Hispanic documents.From the elemental composition we concluded that the preparation layer shows the presence of gypsum (CaSO4), color red is due to red hematite (Fe2O3) and black is a carbon-based ink. These results agree with previous analyses carried out by Scanning Electron Microscopy (SEM-EDX) on few samples. However, the presence of Maya Blue in the blue pigment cannot be assured. The examination using UV and IR lights shows homogeneity in the inks and red color but dark areas that contain higher amounts of K in the preparation layer. This paper discusses the results obtained for the UV-IR examinations and the elemental analysis. A comparison with other studies on pre-Hispanic and early colonial codex is presented.


2018 ◽  
pp. 235-240
Author(s):  
M. Magro ◽  
G.F. Sander ◽  
A.M. dos Santos ◽  
L. Rufato ◽  
A.R. Rufato ◽  
...  

1999 ◽  
Vol 49 (S1) ◽  
pp. 311-321 ◽  
Author(s):  
Y. Oura ◽  
H. Nakahara ◽  
K. Sueki ◽  
W. Sato ◽  
A. Saito ◽  
...  

2020 ◽  
Vol 35 (9) ◽  
pp. 1897-1909
Author(s):  
Santiago Martínez ◽  
Raquel Sánchez ◽  
Johan Lefevre ◽  
José-Luis Todolí

The accurate direct elemental analysis of fats and oils is accomplished according to a dilution and shot analysis method.


2012 ◽  
Vol 18 (S5) ◽  
pp. 83-84
Author(s):  
J. Pacheco de Carvalho ◽  
C. F. R. Pacheco ◽  
A. D. Reis

There is a wide range of surface analysis techniques which are, generally, complementary and provide target information for depths near the surface. Nuclear techniques, which are non-destructive, provide for analysis over a few microns close to the surface giving absolute values of concentrations of isotopes and elements. They have been applied in areas such as scientific, technologic, industry, arts and medicine, using MeV ion beams. Nuclear reactions permit tracing of isotopes with high sensitivities. We use ion-ion reactions and the energy analysis method. At a suitable energy of the incident ion beam, an energy spectrum is recorded of ions from the reaction, coming from several depths in the target. Such spectra are computationally predicted, giving target composition and concentration profile information. Elastic scattering is a particular and important case. A computer program has been developed in this context, mainly for flat targets. The non-flat target situation arises as an extension.


1988 ◽  
Vol 123 ◽  
Author(s):  
Mary T. Baker ◽  
David W. Von endt

Infrared Spectroscopy (IR) has traditionally been considered a “non-destructive” analysis method because it causes no chemical change to the sample, and the sample can be recovered for further analysis. However, physical changes are generally necessary for the sample to be introduced into the spectrometer: slicing, crushing, dissolving, melting, etc. In an art object or historical artifact, these sampling methods can be considered somewhat “destructive.”


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