Simple preparation of thin CR-39 detectors for alpha-particle radiobiological experiments

Chan, Ka Fai; Lau, B. M. F.; Nikezić, D.; Tse, Anfernee Kai-Wing; Fong, Wang‐Fun; Yu, K.N.

doi:10.1016/j.nimb.2007.04.149

Cited by 32 publications

(16 citation statements)

References 7 publications

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“…Previous work, utilizing various types of CR-39, have studied the effectiveness of various track etchants, 11 and have looked at the CR-39 response to alpha particles, [12][13][14] electrons, 15 gammas, 16 fission fragments, 17 and neutrons. 18 Studies of the CR-39 efficiency for detecting protons as a function of incident angle in the energy range of 1-10 MeV have also been undertaken, as well as preliminary studies which characterized the track diameter as a function of incident mean proton energy.…”

Section: Introductionmentioning

confidence: 99%

The response of CR-39 nuclear track detector to 1–9 MeV protons

Sinenian

Rosenberg

Manuel

et al. 2011

Review of Scientific Instruments

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The response of CR-39 nuclear track detector (TasTrak®) to protons in the energy range of 0.92–9.28 MeV has been studied. Previous studies of the CR-39 response to protons have been extended by examining the piece-to-piece variability in addition to the effects of etch time and etchant temperature; it is shown that the shape of the CR-39 response curve to protons can vary from piece-to-piece. Effects due to the age of CR-39 have also been studied using 5.5 MeV alpha particles over a 5-year period. Track diameters were found to degrade with the age of the CR-39 itself rather than the age of the tracks, consistent with previous studies utilizing different CR-39 over shorter time periods.

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Section: Introductionmentioning

confidence: 99%

The response of CR-39 nuclear track detector to 1–9 MeV protons

Sinenian

Rosenberg

Manuel

et al. 2011

Review of Scientific Instruments

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“…In many scientific disciplines, including Inertial Confinement Fusion (ICF) research, charged particles and neutrons are often studied with solid-state nuclear track detectors (SSNTD) [1][2][3][4][5][6][7][8][9][10][11][12] . These are crystal or polymer materials in which ionizing nuclear particles leave detectable tracks of molecular damage sites [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

“…These tracks can then be identified with an optical microscope with 100% efficiency for many charged particles that are normally incident to its surface (such as protons in the energy range 0.5 to 8 MeV 4,6 ). The uniquely high sensitivity of CR-39 has made it the detector of choice for light ion studies because the ionization levels of protons and deuterons are typically below the response thresholds of other detectors 9 . Previous work with various types of CR-39 has studied the effectiveness of track etchants 10 and has looked at CR-39 response to electrons 3 , neutrons 11 , protons 7 , deuterons 13 , tritons 13 , and alpha particles 9 .…”

Section: Introductionmentioning

confidence: 99%

“…The uniquely high sensitivity of CR-39 has made it the detector of choice for light ion studies because the ionization levels of protons and deuterons are typically below the response thresholds of other detectors 9 . Previous work with various types of CR-39 has studied the effectiveness of track etchants 10 and has looked at CR-39 response to electrons 3 , neutrons 11 , protons 7 , deuterons 13 , tritons 13 , and alpha particles 9 . One thing that has not been quantitatively studied is how the CR-39 response to these particles is modified when the CR-39 is exposed to high fluence of x-rays, as it is when used in experiments at ICF facilities like OMEGA 14 and the NIF 15 , where doses of close to 5 Gy are typical.…”

Section: Introductionmentioning

confidence: 99%

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Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas

Rojas-Herrera

Rinderknecht

Zylstra

et al. 2015

Review of Scientific Instruments

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The CR-39 nuclear track detector is used in many nuclear diagnostics fielded at inertial confinement fusion (ICF) facilities. Large x-ray fluences generated by ICF experiments may impact the CR-39 response to incident charged particles. To determine the impact of x-ray exposure on the CR-39 response to alpha particles, a thick-target bremsstrahlung x-ray generator was used to expose CR-39 to various doses of 8 keV Cu-Kα and Kβ x-rays. The CR-39 detectors were then exposed to 1–5.5 MeV alphas from an Am-241 source. The regions of the CR-39 exposed to x-rays showed a smaller track diameter than those not exposed to x-rays: for example, a dose of 3.0 ± 0.1 Gy causes a decrease of (19 ± 2)% in the track diameter of a 5.5 MeV alpha particle, while a dose of 60.0 ± 1.3 Gy results in a decrease of (45 ± 5)% in the track diameter. The reduced track diameters were found to be predominantly caused by a comparable reduction in the bulk etch rate of the CR-39 with x-ray dose. A residual effect depending on alpha particle energy is characterized using an empirical formula.

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“…The DHM images show also the ability of this technique to evaluate the roughness of etched LR-115 detectors, which is of great concern for radiobiological experiments since a rough and opaque detector will hinder the study of radiobiological effects under the optical microscope [32]. Thus, the application of this technique enables to find the appropriate etching conditions to minimize the roughness.…”

Section: Resultsmentioning

confidence: 95%

Digital holographic microscopy for recording and analysis of 3D images of etched tracks in LR-115 SSNTD

Fernandez

Palácios

Yushimura

et al. 2015

J Radioanal Nucl Chem

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An alternative method to visualize and analyze etched tracks in LR-115 detectors was developed. The method is based on digital holographic microscopy which provides three-dimensional track images. Virtual volumes of simulated tracks were generated considering the refractive index and thickness of etched detectors, and the 3D track profiles produced by the TRACK_TEST program. The developed technique can faithfully reproduce the 3D shape of simulated tracks and their geometric parameters. It was also possible to visualize the 3D shape of experimental tracks. The residual thickness of LR-115 detectors can be determined from tracks that completely perforated the active layer.

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Simple preparation of thin CR-39 detectors for alpha-particle radiobiological experiments

Cited by 32 publications

References 7 publications

The response of CR-39 nuclear track detector to 1–9 MeV protons

The response of CR-39 nuclear track detector to 1–9 MeV protons

Impact of x-ray dose on the response of CR-39 to 1–5.5 MeV alphas

Digital holographic microscopy for recording and analysis of 3D images of etched tracks in LR-115 SSNTD

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