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 Alpha-particle fluence in radiobiological experiments

2016 ◽  
Vol 58 (2) ◽  
pp. 195-200
Author(s):  
Dragoslav Nikezic ◽  
Kwan Ngok Yu
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Alpha Particle ◽  
Track Detector ◽  
Alpha Particles ◽  
Target Distance ◽  
Nuclear Track Detector ◽  
241Am Source ◽  
Particle Tracks ◽  
Carbonate Film

Abstract Two methods were proposed for determining alpha-particle fluence for radiobiological experiments. The first involved calculating the probabilities of hitting the target for alpha particles emitted from a source through Monte Carlo simulations, which when multiplied by the activity of the source gave the fluence at the target. The second relied on the number of chemically etched alpha-particle tracks developed on a solid-state nuclear track detector (SSNTD) that was irradiated by an alpha-particle source. The etching efficiencies (defined as percentages of latent tracks created by alpha particles from the source that could develop to become visible tracks upon chemical etching) were computed through Monte Carlo simulations, which when multiplied by the experimentally counted number of visible tracks would also give the fluence at the target. We studied alpha particles with an energy of 5.486 MeV emitted from an 241Am source, and considered the alpha-particle tracks developed on polyallyldiglycol carbonate film, which is a common SSNTD. Our results showed that the etching efficiencies were equal to one for source–film distances of from 0.6 to 3.5 cm for a circular film of radius of 1 cm, and for source–film distances of from 1 to 3 cm for circular film of radius of 2 cm. For circular film with a radius of 3 cm, the etching efficiencies never reached 1. On the other hand, the hit probability decreased monotonically with increase in the source–target distance, and fell to zero when the source–target distance was larger than the particle range in air.

Etching characteristic studies for the detection of alpha particles in DAM–ADC nuclear track detector

2014 ◽  
Vol 102 ◽  
pp. 79-83 ◽  
Author(s):  
H. El-Samman ◽  
A.H. Ashry ◽  
W. Arafa ◽  
M. Abou-leila ◽  
A.M. Abdalla ◽  
...  
Keyword(s):  
Track Detector ◽  
Alpha Particles ◽  
Nuclear Track Detector

scholarly journals Diagnosis of laser produced plasmas using fusion reaction products

1988 ◽  
Vol 6 (2) ◽  
pp. 353-360 ◽  
Author(s):  
P. M. Evans ◽  
A. P. Fews ◽  
W. T. Toner
Keyword(s):  
Fusion Reaction ◽  
Thickness Distribution ◽  
Track Detector ◽  
Alpha Particles ◽  
Stopping Power ◽  
Theoretical Modelling ◽  
Foil Thickness ◽  
Image Analysis System ◽  
Reaction Products ◽  
Nuclear Track Detector

Experiments have been performed at the Central Laser Facility, Rutherford Appleton Lab., UK. using novel techniques in which laser produced plasmas have been diagnosed by measurements of the charged thermonuclear reaction products. Two types of experiment are being reported here. Firstly, thermonuclear alpha particles from an exploding pusher target have been used to determine the growth of the Rayleigh–Taylor instability in a separate laser driven planar foil. The resulting alpha particle range loss distributions provide a direct measurement of the foil thickness distribution and hence the instability. The R–T instability has been observed in a number of foils with range losses varying between almost zero to over lOμm. Secondly, a thermonuclear particle backlighting technique has been used in the measurement of the stopping power of hot plasma for different materials. The ratio of plasma stopping power to that of the cold material is measured and compared to a value obtained from theoretical modelling. The solid state nuclear track detector CR–39 has been used as a diagnostic for these experiments. A sophisticated image analysis system has been developed to enhance and improve data recovery.

scholarly journals Measured the concentrations of uranium in human blood samples from Iraq using CN-85 nuclear track detector

2017 ◽  
Vol 1 (4) ◽  
Author(s):  
Essam M. Rasheed
Keyword(s):  
Human Blood ◽  
Optical Microscope ◽  
Track Detector ◽  
Alpha Particles ◽  
Healthy People ◽  
Standard Samples ◽  
Nuclear Track Detector ◽  
Blood Samples ◽  
The Military

The purpose of this study is to measure the concentration of uranium through 20 samples of human blood from healthy people and patients with leukemia, where the concentration of uranium increased by working in an unhealthy environment that led to people being exposed to cancer. The CN-85 was used to measure and determine alpha particles. Blood samples were dried and 0.5 g of each sample was obtained. The reagent was then bonded to a neutron stream using an (Am-Be) and 5 × 103 n.cm 2s-1 for seven consecutive days. The reagents were then scrapped with NaOH and 6.25 N for five hours. The intensity of the effect was measured by the optical microscope and compared with standard samples prepared in vitro. The increase in the proportion of uranium in the blood was caused by the military wars in 1991 and 2003 where the use of depleted uranium in the munitions and the war in abundance. The concentrations of uranium for healthy people ranged from (0.077 to 0.216 ppb), at a rate of (0.121 ppb). Patients ranged from (1,330-1.960 ppb) at a rate of (1.671 ppb). The acceptable value from ICRP is (0.810 ppb).  

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