Determination of LET in PADC detectors through the measurement of track parameters

Caresana, M.; Ferrarini, M.; Fuerstner, M.; Mayer, Sabine

doi:10.1016/j.nima.2012.04.071

Cited by 21 publications

(24 citation statements)

References 12 publications

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“…This then influences the detectors detection threshold -CR39 (Canada Resin-1939 or polyallyl di-dycol carbonate / PADC) being much more sensitive compared to Cellulose Nitrate (LR115 for example) or bisphenol-A polycarbonate (Lexan for example) (Bhagwat, 1993;Tommasino, 1997). CR39 detectors are also said to be more similar to human tissue than other similar detectors (Caresana et al, 2012), hence their selection in our study. There is in such detectors a critical angle of registration for tracks below which a track is not developed.…”

Section: Discussionmentioning

confidence: 99%

Effects of etching time on alpha tracks in solid state nuclear track detectors

Gillmore

Wertheim

Crust

2017

Science of The Total Environment

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Solid State Nuclear Track Detectors (SSNTDs) are used extensively for monitoring alpha particle radiation, neutron flux and cosmic ray radiation. Radon gas inhalation is regarded as being a significant contributory factor to lung cancer deaths in the UK each year. Gas concentrations are often monitored using CR39 based SSNTDs as the natural decay of radon results in alpha particles which form tracks in these detectors. Such tracks are normally etched for about 4 hours to enable microscopic analysis. This study examined the effect of etching time on the appearance of alpha tracks in SSNTDs by collecting 2D and 3D image datasets using laser confocal imaging techniques. Etching times of 2 to 4 hours were compared and marked differences were noted in resultant track area. The median equivalent diameters of tracks were 20.2, 30.2 and 38.9 µm for etching at 2, 3 and 4 hours respectively. Our results indicate that modern microscope imaging can detect and image the smaller size tracks seen for example at 3 hours etching time. Shorter etching times may give rise to fewer coalescing tracks although there is a balance to consider as smaller track sizes may be more difficult to image. Thus etching for periods of less than 4 hours clearly merits further investigation as this approach has the potential to improve accuracy in assessing the number of tracks.

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Section: Discussionmentioning

confidence: 99%

Effects of etching time on alpha tracks in solid state nuclear track detectors

Gillmore

Wertheim

Crust

2017

Science of The Total Environment

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“…The appearance parameters of the tracks are related to the species and energy of the incident particles. The CR39 detector has been widely used in many fields, such as ICF proton diagnostics, dosimetry for dose assessment and particle detection in space [11,[15][16][17] .…”

Section: Processing Of the The Cr39 Detectormentioning

confidence: 99%

The application of proton spectrometers at the SG-III facility for ICF implosion areal density diagnostics

Zhan

Zheng

Yan

et al. 2015

High Pow Laser Sci Eng

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Charged particle diagnostics is one of the required techniques for implosion areal density diagnostics at the SG-III facility. Several proton spectrometers are under development, and some preliminary areal density diagnostics have been carried out. The response of the key detector, CR39, to charged particles was investigated in detail. A new track profile simulation code based on a semi-empirical model was developed. The energy response of the CR39 detector was calibrated with the accelerator protons and alphas from a 241 Am source. A proton spectrometer based on the filtered CR39 detector was developed, and D-D primary proton measurements were implemented. A step range filter spectrometer was developed, and preliminary areal density diagnostics was carried out. A wedged range filter spectrometer array made of Si with a higher resolution was designed and developed at the SG-III facility. A particle response simulation code by the Monte Carlo method and a spectra unfolding code were developed. The capability was evaluated in detail by simulations.

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“…SSNTDs are more similar to human tissue than other passive detectors (Caresana et al, 2012). They are extensively used in dosimetry because of their low linear energy transfer (Lounis et al, 2001), hence their use in measuring radon and its decay products in buildings.…”

Section: Cr-39 Detectorsmentioning

confidence: 99%

Application of confocal microscopy for surface and volume imaging of solid state nuclear track detectors

Wertheim

Gillmore

2014

Journal of Microscopy

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Summary Inhalation of radon gas is considered a risk factor in the development of lung cancer. Solid state nuclear track detectors (SSNTDs) are often used for monitoring radon levels. We have previously shown that 3D imaging can help distinguish real tracks from artefact. In this study, we investigated particle tracks in nine SSNTDs using surface and volume visualisation from confocal microscope imaging. An Olympus LEXT OLS 4000 confocal microscope equipped with the Olympus LEXT Remote Development Kit was used to acquire z‐stack images and surface data from the SSNTDs. Surface and volume visualisation analysis methods were developed and applied to examine the data. The mean (standard deviation) depth of 45 tracks from the nine detectors was 9.5 (4.6) μm. The mean difference in track depth using the two analysis techniques was 0.08 μm, thus showing good agreement. Furthermore, volume visualisation should enable assessment of the structure of tracks deep in the detector.

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Determination of LET in PADC detectors through the measurement of track parameters

Cited by 21 publications

References 12 publications

Effects of etching time on alpha tracks in solid state nuclear track detectors

Effects of etching time on alpha tracks in solid state nuclear track detectors

The application of proton spectrometers at the SG-III facility for ICF implosion areal density diagnostics

Application of confocal microscopy for surface and volume imaging of solid state nuclear track detectors

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