Characterization of saturation of CR-39 detector at high alpha-particle fluence

Ghazaly, M. El; Hassan, Nabil M.

doi:10.1016/j.net.2017.11.010

Cited by 17 publications

(9 citation statements)

References 18 publications

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“…The CR-39 pieces were disinfected in distilled water after chemical etching. These detector components were observed at a greater magnification (40×) using an optical microscope with a digital camera and Magvision software It is necessary to determine the thickness of the removed layer ∆m and, as a result, it gets a value of V B , based on the known density ρ and mass difference of the detector as in the following equation [22].…”

Section: Methodsmentioning

confidence: 99%

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Radiation Damage in the Structure of the CR-39 Nuclear Detector Material as A Result of the Alpha's Energy Loss

Flaih¹

2022

JUAPS

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In this work, the damage caused by the passage of alpha particles inside the CR-39 nuclear detector material on its chemical structure was studied. All samples at room temperature using a 241Am-Be neutron source with a flux of 105 neutrons.cm-2.s-1 were neutron-irradiated. In the CR-39 nuclear track detectors, chemical etching is a critical step in expanding latent tracks. At 70 °C, a NaOH in 6.25N etchant was found to be useful in expanding alpha traces in the CR-39 detector. The track depths of the Alpha particle as a function of etching time for the various energies were increased as etching time increases. The current study uses the nuclear track detector technique to estimate the range of alpha particles. Track etch rates are frequently determined using 2-dimensional photographs of track openings (diameter) or etching time data. The chemical structure along latent tracks and the track formation process were investigated in PADC(poly allyl diglycol carbonate). The findings showed that the measurement of bulk etch rate values by the weight method was 1.42 ± 0.02 μm/h. In addition, the results for the alpha particle range from 4.47 ± 0.05 and 5.8 ± 0.19 μm for alpha energy 1.47 MeV and 1.2 MeV, respectively .

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Section: Methodsmentioning

confidence: 99%

“…In theory, the energies transmitted by 5 MeV particles are due to dissolving all chains in this detector, of which the strongest is -C = C-with dismantling energy of 6.4 eV. [22,26,27,28]. Fig .…”

Section: Journal Of University Of Anbar For Pure Science (Juaps)mentioning

confidence: 99%

Radiation Damage in the Structure of the CR-39 Nuclear Detector Material as A Result of the Alpha's Energy Loss

Flaih¹

2022

JUAPS

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“…The tracks of alpha particles recorded on CR-39 NTD were counted using an optical microscope with a magnification of 640x. The experiment has taken care of the background of CR-39 NTD, which were calculated and subtracted from the total count of all samples [29][30][31]. The below-mentioned equations were employed for radiometric calculation and radioactivity monitoring as well radiological protection and assessment.…”

Section: Materials and Analysismentioning

confidence: 99%

Evaluation of Radon Radioactivity and Radiological Impact by Using Solid-State Nuclear Track Detector for Erediya younger granites of Central Eastern Desert in Egypt

MITWALLI

Qabeeli

El-Khatib

et al. 2023

Arab Journal of Nuclear Sciences and Applications

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The current study is carried out to monitor radioactivity levels in Erediya younger granites of the Central Eastern Desert in Egypt by using a solid-state nuclear track detector (CR-39 NTD). The polymeric CR-39 NTD was used to determine radium-226 and radon-222 activity concentration, and the theoretical conversion equations, were employed to assess the radiological impact. Predetermined 33 samples were collected from different locations within and around Egypt's Eradia area fulfilling the IAEA TECDOC-1415 protocols. The measured overall average value of the radium and radon activity concentration are 7467.44±50.68 and 7840.14±53.2 Bqm -3 , respectively, which indicated a high abundance of TENORM in the collected samples of the investigated area. The exhalation rate and annual effective dose were calculated, indicating high grades than the permissible limit recommended by IAEA and UNSCEAR, and the average values are 0.87±0.01 Bqm -2 h -1 and 1637.82±26.87 mSvy -1 respectively. The present result is a reference for the radioactivity background as well as assesses any harmful radiation, and particularly helps in applying radiation protection principles for the occupational worker in the Erediya area. To furnish the outcome of the study, data was plotted as counter maps for tracking the distribution pattern of radioactivity levels and concerning radiation protection and human safety work level index was calculated to apply perfect radiation protection methodologies for the occupational.

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“…PADC tracks range from several micrometers to several nanometers for scanning with a high spatial resolution imaging system such as atomic force and confocal microscopes. Meanwhile, spatial resolution amounts to several micrometers for scanning with an ordinary optical microscope [1][2][3][4][5][6]. The major disadvantage of SSNTD is the time resolution of the PADC detector; it is impossible to discern the occurrence of the tracks in the PADC detector.…”

Section: Introductionmentioning

confidence: 99%

On the randomness and correlation in the trajectories of alpha particle emitted from ${}^{241}$Am: Statistical inference based on information entropy

Ghazaly¹,

Elmaghraby²,

Al-Sayed³

et al. 2022

Preprint

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Most particle detectors are based on the hypothesis that particles are emitted randomly upon nuclear decay. In the present work, we tested the hypothesis of the existence of correlation in the random trajectories of alpha particles emitted from 241 Am source and the null hypothesis of random trajectories. The trajectories were clued through the registration of track in a solid-state nuclear track detector. The experimental parameters were optimized to identify the possible sources of correlation in the track registration and the detector conditions upon exposure and etching to avoid misleading results. The optimization included authentication of linearity in registration efficiency with exposure time to prevent coalescence of registered tracks. The statistical inference processes were based upon adaptive quadrates analysis of the spatial data, and entropy and divergence analysis of the quadrate data together with the null hypothesis of Poisson distribution of random trajectories. The clustering and dispersion analysis were performed with central deviation tendency, empirical Kfunction, radial distribution analysis, and proximity Analysis. Results showed a pattern of gained information within the registered tracks that may be attributed to being a consequence of the structure of the source.

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Characterization of saturation of CR-39 detector at high alpha-particle fluence

Cited by 17 publications

References 18 publications

Radiation Damage in the Structure of the CR-39 Nuclear Detector Material as A Result of the Alpha's Energy Loss

Radiation Damage in the Structure of the CR-39 Nuclear Detector Material as A Result of the Alpha's Energy Loss

Evaluation of Radon Radioactivity and Radiological Impact by Using Solid-State Nuclear Track Detector for Erediya younger granites of Central Eastern Desert in Egypt

On the randomness and correlation in the trajectories of alpha particle emitted from ${}^{241}$Am: Statistical inference based on information entropy

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