Ion microbeam tomography

Pontau, A.E.; Antolak, Arlyn J.; Morse, D.H.; Berkmoes, A.A. Ver; Brase, James M.; Heikkinen, D.W.; Martz, H.E.; Proctor, I.D.

doi:10.1016/0168-583x(89)91067-7

Cited by 69 publications

(11 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To obtain the volumetric mass density of a specific cross section, the areal mass-density data of the corresponding line scan in every projection plane are distributed consecutively into a sinogram. The FBP reconstruction method is applied to the areal massdensity sinogram and the resultant reconstruction is the cross sectional volumetric mass density of the sample [6][7][8][9][10].…”

Section: A First Application Of the Isra Technique To Stim Tomographymentioning

confidence: 99%

“…Our overall objective is to calculate mass-density and elemental composition tomograms of microscopic samples accurately, utilising the measured data from scanning transmission ion microscopy (STIM) [6][7][8][9][10] and particleinduced x-ray emission (PIXE) [11][12][13][14][15][16][17] [18][19][20] have been devised, none were identified to possess the appropriate properties for our specific reconstruction problem. Therefore, it was necessary to devise a general iterative technique in which STIM and PIXE tomography data can be accurately analysed using the same technique.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phase and Composition Control of Ni Fully Silicided Gates by Nitrogen Ion Implantation and Double Ni Silicidation

Yamamoto

Sakashita

Sato

et al. 2008

jjap

View full text Add to dashboard Cite

A reconstruction technique to calculate accurate tomograms of a sample, at a voxel scale, from tomographic experiments that involve probe-sample interactions of any degree of complexity is proposed. The properties of the reconstruction technique that accomplish this are outlined. The first guess to the solution is calculated directly from the reconstructed experimental projection data. To improve the accuracy of the approximate solution at every iteration, projection data are calculated by simulating the tomographic experiment, rather than by using a projection matrix. Calculating the ratio of the reconstructed experimental projection data to the reconstructed simulated projection data provides correction factors at every voxel. The approximate solution is multiplied by these correction factors. This correction formulation is identical to that used in the image-space reconstruction algorithm technique. High spatial resolution and accurate solutions are achieved by not implementing any form of smoothing. Instead, a novel technique is used to reduce the noise in the tomograms substantially. We call this reconstruction technique the discretized image-space reconstruction algorithm. This reconstruction technique provides a means to calculate the mass density and elemental composition tomograms of microscopic samples properly, utilizing the wealth of information measured in scanning transmission ion microscopy and particle-induced x-ray emission tomography experiments. To demonstrate the efficacy of this reconstruction technique, examples of scanning transmission ion microscopy tomography experiments are presented.

show abstract

Section: A First Application Of the Isra Technique To Stim Tomographymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phase and Composition Control of Ni Fully Silicided Gates by Nitrogen Ion Implantation and Double Ni Silicidation

Yamamoto

Sakashita

Sato

et al. 2008

jjap

View full text Add to dashboard Cite

show abstract

“…A STIM projection is mapping the energy loss of the ion beam which can be converted into areal mass density [9]. The energy loss will never be zero because the substrate has to be penetrated.…”

Section: Introductionmentioning

confidence: 99%

Limited angle STIM and PIXE tomography of single cells

Andrea

Rothermel

Werner

et al. 2010

Nuclear Instruments and Methods in Physics Research Section B:

View full text Add to dashboard Cite

“…The first experiments using scanning transmission ion microscopy-tomography (STIM-T) and particle induced X-ray emission-tomography (PIXE-T) were done at the end of the eighties and beginning of the nineties, respectively [4,5]. Since then, the development of 3D microscopy techniques providing a spatial resolution less than 1 urn has demonstrated to be very suitable in materials research [6] as well as life sciences [1,3.7]-One of the most interesting advantages of this technique is the use of STIM-T in combination with PIXE-T.…”

Section: Introductionmentioning

confidence: 99%

Technical developments for computed tomography on the CENBG nanobeam line

Gordillo

Habchi

Daudin

et al. 2011

Nuclear Instruments and Methods in Physics Research Section B:

View full text Add to dashboard Cite

The use of ion microbeams as probes for computed tomography has proven to be a powerful tool for the three-dimensional characterization of specimens a few tens of micrometers in size. Compared to other types of probes, the main advantage is that quantitative information about mass density and composition can be obtained directly, using specific reconstruction codes. At the Centre d'Etudes Nucleaires de Bordeaux Gradignan (CENBG), this technique was initially developed for applications in cellular biology. However, the observation of the cell ultrastructure requires a sub-micron resolution. The construction of the nanobeam line at the Applications Interdisciplinaires des Faisceaux d'lons en Region Aquitaine (AIFIRA) irradiation facility has opened new perspectives for such applications.The implementation of computed tomography on the nanobeam line of CENBG has required a careful design of the analysis chamber, especially microscopes for precise sample visualization, and detectors for scanning transmission ion microscopy (STIM) and for particle induced X-ray emission (PIXE). The sample can be precisely positioned in the three directions X, Y, Z and a stepper motor coupled to a goniometer ensures the rotational motion. First images of 3D tomography were obtained on a reference sample containing microspheres of certified diameter, showing the good stability of the beam and the sample stage, and the precision of the motion.

show abstract

Ion microbeam tomography

Cited by 69 publications

References 6 publications

Phase and Composition Control of Ni Fully Silicided Gates by Nitrogen Ion Implantation and Double Ni Silicidation

Phase and Composition Control of Ni Fully Silicided Gates by Nitrogen Ion Implantation and Double Ni Silicidation

Limited angle STIM and PIXE tomography of single cells

Technical developments for computed tomography on the CENBG nanobeam line

Contact Info

Product

Resources

About