scholarly journals Finding Bulk etch rate VB using the maximum value of the Lmax effect using practical diameters calculated from the falling alpha particles on the CR-39 nuclear track detector

2020 ◽  
Vol 928 ◽  
pp. 072112
Author(s):  
Laith Mounir Muhamad ◽  
Yasser Yahya Qassem
Keyword(s):  
Etch Rate ◽  
Track Detector ◽  
Alpha Particles ◽  
Nuclear Track Detector ◽  
Bulk Etch Rate ◽  
Maximum Value

Evaluation of Bulk Etch Rate of Solid State Nuclear Track Detector CR-39

2015 ◽  
Vol 1107 ◽  
pp. 712-715
Author(s):  
Anees A. Al-Hamzawi ◽  
M.S. Jaffar ◽  
Nada F. Tawfiq ◽  
Murtadha Sh. Aswood
Keyword(s):  
Solid State ◽  
Etch Rate ◽  
Solution Concentration ◽  
Track Detector ◽  
Etching Time ◽  
Nuclear Track Detector ◽  
Bulk Etch Rate ◽  
Different Temperatures ◽  
Naoh Solution

In the current study, the bulk etch rate VBof solid state nuclear track detectors SSNTDs CR-39 have been examined at different concentrations of NaOH solution ranged from 4N to 8N and different temperatures of NaOH solution (50, 60, 70, 80°C) for various time intervals of etching (1-10 h); this is done by determination of mass variation via etching time. The results indicate that the bulk etch rate VBincreases with the increase of etchant solution concentration and the temperature of solution. This can be attributed to the increase the thickness of the removed layers h of the detector.

Effects of UV irradiation on Fission-fragment track parameters in Makrofol-E detector

2019 ◽  
Vol 28 (12) ◽  
pp. 1950110 ◽  
Author(s):  
R. K. Jain ◽  
S. Kumar ◽  
A. Kumar ◽  
Aniket Kumar ◽  
M. K. Singh ◽  
...  
Keyword(s):  
Activation Energy ◽  
Solid State ◽  
Fission Fragment ◽  
Etch Rate ◽  
Activation Energies ◽  
Track Detector ◽  
Nuclear Track Detector ◽  
Bulk Etch Rate ◽  
Track Etch Rate ◽  
Track Etch

This study gives information about the effects of UV (here, the wavelength is 160 nm) exposure on the bulk etch rate ([Formula: see text], track etch rate ([Formula: see text], the detector sensitivity ([Formula: see text], critical angle ([Formula: see text] and etching efficiency ([Formula: see text] of Makrofol-E Solid State Nuclear Track Detector. The effect of UV on the activation energy of Makrofol-E was also studied. Nine pieces of Makrofol-E Solid State Nuclear Track Detector were separated into three equal sets as set A, set B and set C. Set A, named as reference set (Fission fragment FF), was irradiated to [Formula: see text]Cf source. Set B, called as post-exposed ([Formula: see text]), was first irradiated to [Formula: see text]Cf and then exposed to UV. The process was reversed for set C named as pre-exposed ([Formula: see text]) at the same conditions. From the results, it is concluded that radiation produces small but significant effect on activation energy [Formula: see text] of bulk etch rate for pre-exposed and post-exposed samples. Also, the activation energies [Formula: see text] of track etch rate for post-exposed and Fission fragment samples are within experimental uncertainty. The energy carried by UV radiation may be responsible for cross networking processes occurring during the exposure which results small change in activation energies for both [Formula: see text] and [Formula: see text]. The [Formula: see text] can be increased by hardening detector material of the pre-exposed detector.

Photoluminescence characterizations and nonlinear optical of PM-355 nuclear track detector film by alpha-particles and laser irradiation

2020 ◽  
Vol 95 (7) ◽  
pp. 075709 ◽  
Author(s):  
R K Fakher Alfahed ◽  
Abdulameer Imran ◽  
Munaf S Majeed ◽  
Hussain Ali Badran
Keyword(s):  
Laser Irradiation ◽  
Nonlinear Optical ◽  
Track Detector ◽  
Alpha Particles ◽  
Nuclear Track Detector

scholarly journals Measuring the concentration of uranium for adults teeth in adjacent areas of Tigris river in Baghdad city using nuclear track detector CR-39

2019 ◽  
Vol 11 (21) ◽  
pp. 54-58
Author(s):  
Israa K. Ahmed
Keyword(s):  
Neutron Source ◽  
Fission Track ◽  
Track Detector ◽  
Thermal Neutrons ◽  
Standard Samples ◽  
Nuclear Track Detector ◽  
Fission Tracks ◽  
Tigris River ◽  
Maximum Value ◽  
Three Samples

In this study, the fission track registration technique with the CR-39 detector are using to determination the uranium concentrations for seventeen samples of teeth distributed in four districts in Baghdad City .Five samples taken from both Al-Durra District and Al-Jadiriyia District, Four samples taken from Al-Karrda (Alaatar street) Taken four samples and three samples taken from Al-Zuafrania and by 0.5gm in weight and 1.5 mm in thickness. The uranium concentrations in teeth samples measured by using fission tracks registration in (CR-39) track detector that caused by the bombardment of (U) with thermal neutrons from (241 Am-Be) neutron source that has flux of (5 ×103 n cm-2 s-1). The concentrations values were calculated by a comparison with standard samples. The results showed that the maximum value of uranium is (0.071 ppm) equal to (0.686Bq) in Al-Zuafaraniya district and the minimum is (0.035 ppm) equal to (0.31Bq) in Al-Jadiriah district.

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