Structure of Nanometer Wide Heavy-Ion Tracks in Muscovite

2013 ◽  
Vol 328 ◽  
pp. 739-743
Author(s):  
Yehuda Eyal ◽  
Sameer Abu Saleh
Keyword(s):  
Electron Density ◽  
Small Angle ◽  
Heavy Ion ◽  
Atomic Order ◽  
Electron Densities ◽  
X Ray ◽  
Ion Tracks ◽  
X Ray Scattering ◽  
Ion Damage ◽  
Pb Ions

Radial electron densities within 63-67 μm long ion damage trails, latent ion tracks, created in {001} muscovite by irradiation with 11.1-28.7 MeV/A U and Pb ions, have been derived by small-angle X-ray scattering. Track diameters are 8.0-10.2 nm. The tracks exhibit continuous and uniform electron density decrease of ~4%. Complementary microscopy has revealed loss of atomic order in the tracks. These ion-induced effects undoubtedly accelerate preferential through track permeability of inert and corrosive agents, a property that is important for track applications.

Ion track etching of polycarbonate membranes monitored by in situ small angle X-ray scattering

2021 ◽  
Author(s):  
Alexander Kiy ◽  
Christian Notthoff ◽  
Shankar Dutt ◽  
Mark Grigg ◽  
Andrea Hadley ◽  
...  
Keyword(s):  
High Precision ◽  
Small Angle ◽  
Selective Dissolution ◽  
X Ray ◽  
Ion Tracks ◽  
X Ray Scattering ◽  
Track Etching ◽  
Polycarbonate Membranes ◽  
Ray Scattering

In situ small angle X-ray scattering (SAXS) measurements of ion track etching of polycarbonate foils are used to directly monitor the selective dissolution of ion tracks with high precision, including...

scholarly journals Annealing of ion tracks in apatite under pressure characterized in situ by small angle x-ray scattering

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Daniel Schauries ◽  
Boshra Afra ◽  
Pablo Mota-Santiago ◽  
Christina Trautmann ◽  
Maik Lang ◽  
...  
Keyword(s):  
Small Angle ◽  
X Ray ◽  
Ion Tracks ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals Etched ion tracks in amorphous SiO2 characterized by small angle x-ray scattering: influence of ion energy and etching conditions

2019 ◽  
Vol 30 (27) ◽  
pp. 274001 ◽  
Author(s):  
A Hadley ◽  
C Notthoff ◽  
P Mota-Santiago ◽  
U H Hossain ◽  
N Kirby ◽  
...  
Keyword(s):  
Small Angle ◽  
Amorphous Sio2 ◽  
Ion Energy ◽  
X Ray ◽  
Ion Tracks ◽  
X Ray Scattering ◽  
Ray Scattering

Röntgenkleinwinkel-und Sedimentationsstudien am a-Häm ocyanin Helix pomatia (halbe Moleküle) in Glycerin-und Saccharoselösungen / Small-Angle X-Ray and Sedimentation Studies on a-Haemocyanin H . pomatia (Halve Molecules) in Glycerol and Sucrose Solutions Small-Angle X-Ray Scattering, Haemocyanin, Sedimentation, Multicomponent System

1976 ◽  
Vol 31 (5-6) ◽  
pp. 238-244 ◽  
Author(s):  
Johann Berger ◽  
Ingrid Pilz ◽  
Raf Witters ◽  
René Lontie
Keyword(s):  
Electron Density ◽  
Small Angle ◽  
Specific Volume ◽  
Helix Pomatia ◽  
Partial Specific Volume ◽  
Strong Increase ◽  
Radius Of Gyration ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

The α -haemocyanin molecules of Helix pomatia were decomposed into halves and studied in solution by small-angle X-ray scattering. The following parameters of the molecule could be ob­tained : radius of gyration, volume, molecular weight, overall shape and dimensions of the molecule. With small-angle X-ray scattering fluctuations of the electron density within the protein cause parasitic scattering at larger angles. According to Stuhrmann and Kirste it is possible to eliminate it mathematically by varying the electron density of the buffer. For this purpose different quan­tities of glycerol respectively saccharose were added to the solvent to study the scattering of α -haemocyanin halves in solvents of varied electron density. The change of the isopotential specific volume of haemocyanin and the strong increase of the statistical errors of its scattering by de­creasing of the excess scattering of solution over solvent per unit volume did not allow an ap­plication of the method of Stuhrmann and Kirste. The data obtained for α -haemocanin halves in different solvents are given. Besides also the sedimentation of the α -haemocyanin halves were studied in solutions containing varied amounts of glycerol and saccharose. An attempt was made to calculate the change of the partial specific volume of haemocyanin by adding glycerol or saccharose.

Nanoparticle characterization by continuous contrast variation in small-angle X-ray scattering with a solvent density gradient

2015 ◽  
Vol 48 (1) ◽  
pp. 20-28 ◽  
Author(s):  
Raul Garcia-Diez ◽  
Christian Gollwitzer ◽  
Michael Krumrey
Keyword(s):  
Density Gradient ◽  
Electron Density ◽  
Small Angle ◽  
Glass Capillary ◽  
Contrast Variation ◽  
X Ray ◽  
X Ray Scattering ◽  
Novel Approach ◽  
Solvent Density ◽  
Ray Scattering

Many low-density nanoparticles show a radial inner structure. This work proposes a novel approach to contrast variation with small-angle X-ray scattering based on the constitution of a solvent density gradient in a glass capillary in order to resolve this internal morphology. Scattering curves of a polymeric core–shell colloid were recorded at different suspending medium contrasts at the four-crystal monochromator beamline of PTB at the synchrotron radiation facility BESSY II. The mean size and size distribution of the particles as well as an insight into the colloid electron density composition were determined using the position of the isoscattering points in the Fourier region of the scattering curves and by examining the Guinier region in detail. These results were corroborated with a model fit to the experimental data, which provided complementary information about the inner electron density distribution of the suspended nanoparticles.

scholarly journals Electron density map using multiple scattering in grazing-incidence small-angle X-ray scattering

2007 ◽  
Vol 40 (3) ◽  
pp. 496-504 ◽  
Author(s):  
Byeongdu Lee ◽  
Insun Park ◽  
Haewoong Park ◽  
Chieh-Tsung Lo ◽  
Taihyun Chang, ◽  
...  
Keyword(s):  
Multiple Scattering ◽  
Electron Density ◽  
Small Angle ◽  
Grazing Incidence ◽  
X Ray ◽  
X Ray Scattering ◽  
Diffraction Peaks ◽  
Density Map ◽  
Electron Density Map ◽  
Ray Scattering

The electron density map of a block copolymer thin film having the hexagonally perforated layer (HPL) structure was directly obtained from the measured grazing-incidence small-angle X-ray scattering (GISAXS) pattern, exploiting the multiple-scattering phenomena present in GISAXS. It is shown that GISAXS is in principle equivalent to three-beam diffraction, which has been used to extract phases of diffraction peaks. In addition, X-ray reflectivity analysis has been performed which, when combined with the GISAXS results, provides full details of the HPL structure.

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