Track Registration in Various Solid-State Nuclear Track Detectors

Fleischer, R. L.; Price, P. B.; Walker, R. M.; Hubbard, E.

doi:10.1103/physrev.133.a1443

Cited by 202 publications

(37 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[19,20] This method can also be used in oil research since for depths where the apatite mineral (with closure temperature at ∼120 • C) suffers total annealing the zircon still can give information of the basin thermal evolution where the perforation is made. [21,22] Fleischer et al [23] in 1964 published the first article to describe sample preparation and etching in zircon crystals for FTM where cleaved crystals immersed in boiling phosphoric acid were used to reveal tracks. One of the main difficulties of the FTM in zircon is to establish a convenient etching to reveal the tracks since the etching depends on the crystalline structure and chemical composition of the zircon.…”

Section: Introductionmentioning

confidence: 99%

Micro‐Raman spectroscopy and SEM/EDX applied to improve the zircon fission track method used for dating geological formations

Dias

Sáenz

Constantino

et al. 2008

J Raman Spectroscopy

View full text Add to dashboard Cite

The zircon mineral is widely studied in geochronology. In the case of the fission track method (FTM), the age is determined by the density of fission tracks at the zircon surface, which can be observed with an optical microscope after an appropriate chemical treatment (etching). The etching must be isotropic at the zircon grain surface to be used in the FTM, which leads those zircon grains whose etching is anisotropic to be discarded. The only reason for this discarding is the nonuniform morphology of the surface grain seen by optical microscopy, that is, no further physicochemical analysis is performed. In this work, combining micro-Raman and scanning electron microscopy (SEM) to study the etching anisotropy, it was shown that zircon grains that present at least one area at the surface where the density of fission track is uniform can be used in the FTM. The micro-Raman showed characteristic spectra of the standard zircon sample either from the areas where there are tracks or from where there are not. The only difference found was in the Raman bandwidths, which were broader for the areas with higher density of fission tracks. This suggests simply a decrease in the relative percentage of the crystalline/amorphous phases at these areas. The SEM/energy dispersive spectrometry (EDX) showed that there were no significant differences in the principal chemical composition at the areas with and without fission tracks.

show abstract

Section: Introductionmentioning

confidence: 99%

Micro‐Raman spectroscopy and SEM/EDX applied to improve the zircon fission track method used for dating geological formations

Dias

Sáenz

Constantino

et al. 2008

J Raman Spectroscopy

View full text Add to dashboard Cite

show abstract

“…Nanotechnology with ion tracks is in most cases based on a selective etching process which dissolves the original track in a suitable chemical solvent converting the track into an open nano-or micrometer sized channel. [1][2][3][4][5][6][7] After the discovery of ion tracks in the late 1950s 8 until today, high resolution techniques in particular transmission electron microscopy (TEM) have been essential to directly image and characterize tracks with respect to their size and structure. Nowadays a large body of data is available for tracks in metallic, [9][10][11][12] semiconducting, [13][14][15][16][17][18][19][20] and most notably insulating materials.…”

Section: Introductionmentioning

confidence: 99%

Dense and nanometric electronic excitations induced by swift heavy ions in an ionic CaF2crystal: Evidence for two thresholds of damage creation

et al. 2012

View full text Add to dashboard Cite

CaF 2 crystals as representatives of the class of ionic nonamorphizable insulators were irradiated with many different swift heavy ions of energy above 0.5 MeV/u providing a broad range of electronic energy losses (S e ). Beam-induced modifications were characterized by Channeling Rutherford Backscattering Spectrometry (C-RBS) and x-ray diffraction (XRD), complemented by transmission electron microscopy (TEM). Results from C-RBS give evidence of significant damage appearing above a S e threshold of 5 ± 2 keV/nm. A second critical S e appears around 18 ± 3 keV/nm; below this value the damage as function of ion fluence saturates at 20%, while above this the damage saturation level increases with S e , reaching ∼60% for ions of S e = 30 keV/nm. XRD measurements also show effects indicating two threshold values. Above 5 keV/nm, the widths of the XRD reflection peaks increase due to the formation of nanograins, as seen by TEM, while a significant decrease of the peak areas only occurs above 18 keV/nm. The track radii deduced from C-RBS measurements are in agreement with those extracted from the fluence evolution of the widths of the XRD peaks. Moreover, track radii deduced from the peak area analysis are slightly smaller but in agreement with previous track observations by high resolution electron microscopy. Calculations based on the inelastic thermal spike model suggest that the lower threshold at 5 keV/nm is linked to the quenching of the molten phase, whereas the threshold at 18 keV/nm can be interpreted as quenching of the boiling phase. The results of CaF 2 are compared with other nonamorphizable materials such as LiF and UO 2 .

show abstract

“…Il reste, à ce jour encore, le mieux connu. On vit appa raître ensuite le Mylar et les détecteurs de la famille cellulosique : nitrate, acétate, acétobutyrate (13,15,16,17). Les caractéristiques du polytéréphtalate isophta lique d'hydroquinone diphénol (HB paIT) étaient données par F leischer et al (18), celle du «film H» par Perelygin (19).…”

Section: Les Divers Détecteurs Organiquesunclassified

“…Depuis, la liste des détecteurs sensibles aux alpha, s'est allongée. On y trouve les dérivés acétate et acétobutyrate de cellulose, le polyméthacrylate de méthyle, le polyoxyméthylène (16,20,21). Il semble que le plus sensible des détecteurs actuels reste le nitrate de cellulose dans lequel Walker a pu observer des traces dues aux deutons (10).…”

Section: Sensibilité Des Différents Détecteursunclassified

Les détecteurs solides de traces

Monnin¹

1967

Radioprotection

View full text Add to dashboard Cite

RÉSUMÉDans ce texte, nous donnons un aperçu général des caractéristiques des détecteurs solides de traces, en insistant plus particulièrement sur les détecteurs organiques (polymères). Tout d'abord nous décrivons le développement par attaque chimique des traces de particules ionisantes. Nous indiquons les réactifs chimiques permet tant l'utilisation de nouveaux détecteurs comme le polyéthylène, le polypropylène et le polyéthylène ionomérique ainsi que des méthodes différentes pour la révélation des traces dans des détecteurs déjà connus. Puis, nous décrivons la propriété la plus caractéristique des détecteurs : leur seuil très marqué d'enregistrement et nous suggérons d'en donner une nouvelle définition. Enfin, nous exposons brièvement des mécanismes possibles de formation des traces. Nous concluons en souhaitant un large champ d'application pour ces détecteurs. ABSTRACTIn this paper, we give a general survey of characteristics of solid-state nuclear track detectors. Organic detectors (polymeric systems) are emphasized. We first describe the development of ionizing particles tracks by chemical etching. We give the chemical etching reagents to be used with new detectors such as polyethylene, poly propylene and ionomeric polyethylene and, also, new methods to reveal some alrea dy known detectors. Then, the most important characteristic of detectors, i.e. its very sharp detection cut-off is explained and we suggest to give a different definition of the detection threshold. Finally, we expose briefly possible mechanics for track formation. We conclude expecting a large application for these detectors.

show abstract

Track Registration in Various Solid-State Nuclear Track Detectors

Cited by 202 publications

References 14 publications

Micro‐Raman spectroscopy and SEM/EDX applied to improve the zircon fission track method used for dating geological formations

Micro‐Raman spectroscopy and SEM/EDX applied to improve the zircon fission track method used for dating geological formations

Dense and nanometric electronic excitations induced by swift heavy ions in an ionic CaF2crystal: Evidence for two thresholds of damage creation

Les détecteurs solides de traces

Contact Info

Product

Resources

About