scholarly journals ESTIMATION THE CONCENTRATION OF URANIUM IN THE SEDIMENTS OF THE SOUTHERN PART OF THE SHATT AL-ARAB RIVER, SOUTH OF BASRAH GOVERNORATE USING SSNTDS(CR-39)TECHNIQUES

2021 ◽  
Vol 03 (03) ◽  
pp. 25-30
Author(s):  
Thaer M.SALMAN ◽  
Ali F.HABEEB
Keyword(s):  
Solid State ◽  
Fission Fragment ◽  
Chemical Etching ◽  
Surface Soil ◽  
Track Detector ◽  
Soil Samples ◽  
Thermal Neutrons ◽  
Nuclear Track Detector ◽  
Uranium Fission

The present work deals with measuring concentrations of uranium in 20 samples taken from sediments of different sites of southern Shatt al-Arab located south of Basra Governorate Located in the southern part of Iraq, using a uranium fission fragment U-235 (n-f), obtained by the bombardment of U-235 with thermal neutrons. Irradiation was performed, then chemical etching was performed, and then the number of tracks was counted using a microscope. The results computed through the solid state nuclear track detector (SSNTDs) techniques For 20 samples were taken from 20 different sediment sites in the southern part of the Shatt al-ArabIn the southern part of Basra Governorate, southern Iraqindicated that the uranium concentrations in the study area ranged between 1.886 ppm near Al-Shahiniya Road and 3.290 ppm at the AL-Dora 2 site. The t results of the study have shown that the uranium concentrations in the studied surface soil samples were less than the allowed value (11.7 ppm) recommended by UNSCEAR, 1993.

scholarly journals Measurement of radon and uranium concentration in soil samples from Babylon cement plant using nuclear track detector CR-39

2019 ◽  
Vol 12 (24) ◽  
pp. 68-74
Author(s):  
Israa Kamil Ahmed
Keyword(s):  
Neutron Source ◽  
Uranium Concentration ◽  
Track Detector ◽  
Soil Samples ◽  
Cement Plant ◽  
Thermal Neutrons ◽  
Standard Samples ◽  
Nuclear Track Detector ◽  
Fission Fragments ◽  
Radon Concentrations

In this study, concentrations of radon and uranium were measured for twenty six samples of soil. The radon concentrations in soil samples measured by registrant alpha-emitting radon (222Rn) by using CR-39 track detector. The uranium concentrations in soil samples measured by using registrar fission fragments tracks 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 ×103n cm-2 s-1.The concentrations values were calculated by a comparison with standard samples The results show that the radon concentrations are between (91.931-30.645Bq/m3).The results show that also the uranium concentrations are in soil samples under 0.051-0.0079ppm.

scholarly journals Uranium concentrations in Soil of Salahdin Governorate Using CR-39 Nuclear Track Detector

2014 ◽  
Vol 11 (2) ◽  
pp. 531-534
Author(s):  
Baghdad Science Journal
Keyword(s):  
Nuclear Reaction ◽  
Neutron Source ◽  
Uranium Concentration ◽  
Nuclear Fission ◽  
Track Detector ◽  
Soil Samples ◽  
Thermal Neutrons ◽  
Standard Samples ◽  
Nuclear Track Detector ◽  
Fission Fragments

Uranium concentrations in soil were determined for ten locations in Salahdin governorate using CR-39 track detector, fission fragments track technique was used, the nuclear reaction of nuclear fission fragments obtained by the bombardment of 235U with thermal neutrons from (Am-Be) neutron source with flux (5000n.cm-2.s-1), the concentration values were calculated by a comparison with standard samples. The results of the measurements show that the uranium concentration in soil samples various from 0.42±0.018ppm in Beji province to 0.2±0.014 ppm in Tooz province with an average (0.31±0.08ppm), the values of uranium concentration in all samples are within the permissible limits universally.

scholarly journals Radon-thoron measurements in air and soil from some districts of northern part of India

2015 ◽  
Vol 30 (4) ◽  
pp. 294-300 ◽  
Author(s):  
Nisha Mann ◽  
Amit Kumar ◽  
Sushil Kumar ◽  
Rishi Chauhan
Keyword(s):  
Solid State ◽  
Radon Concentration ◽  
Indoor Environment ◽  
Indoor Radon ◽  
Correlation Study ◽  
Track Detector ◽  
Soil Samples ◽  
Indoor Radon Concentration ◽  
Nuclear Track Detector ◽  
Environmental Activity

Radon, thoron and their progenies in the indoor environment are considered as one of the health hazards. The alpha emitting nature of these gases made it possible to detect in indoor environment with the help of nuclear track detector techniques. The soil is the main source of indoor radon as it contains varying amounts of uranium and thorium. Thus the exhalation of radon from soil and its environmental activity needs to be studied. In the present study, the measurement of the indoor radon-thoron from the indoor environment and exhalation from soil are carried out using solid state nuclear track detector technique from Sirsa and Bhiwani districts of northern part of India. The canister technique was used to measure the radon ex- halation rate from the soil samples collected from the study area and pinhole based radon-thoron dosimeters were used to measure indoor radon and thoron concentration. The results show that indoor radon concentration varied from 9 to 28 Bq/m3, with an average of 18.9 Bq/m3 and from 5 to 21 Bq/m3, with an average of 13.8 Bq/m3, for Bhiwani and Sirsa, respectively. Similarly, thoron concentration varied from 14 to 48 Bq/m3, with average of 28.9 Bq/m3 and 27 to 54 Bq/m3, with the average of 39.0 Bq/m3, for Bhiwani and Sirsa, respectively. The mass exhalation rates from soil samples were also measured, to estimate their contribution to indoor radon. A correlation study was carried out between soil exhalation rates and indoor radon concentration.

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.

scholarly journals Measuring Uranium Concentrations in Soil Samples of Midland Refineries Company - Doura - Baghdad – Iraq

2019 ◽  
Vol 16 (3) ◽  
pp. 0626
Author(s):  
Mahdi Et al.
Keyword(s):  
Solid State ◽  
Uranium Concentration ◽  
Track Detector ◽  
Soil Samples ◽  
Nuclear Track Detector ◽  
Average Value ◽  
Detector Type

      In this study, the CR-39 detector technique was used, to estimate the uranium concentration from the soil in midland refineries Company (Doura refine (, Baghdad, Iraq. Uranium concentrations in soil samples have been measured using solid state nuclear track detector type CR-39.  Nine soil samples were collected from different areas within the Doura refinery and other soil samples were collected form Abu Tayara Street and ALshortaa District outside the refinery for comparison. The results showed variable values for uranium concentrations. The average value of uranium concentration was found to be 0.37 ppm in doura refinery. For areas outside the refinery, the concentration of uranium was 0.008 ppm. These results were less than the global limit.

scholarly journals Study a concentration of Uranium for samples of soil from Falluja City using PM-355

2017 ◽  
Vol 14 (1) ◽  
pp. 80-84
Author(s):  
Baghdad Science Journal
Keyword(s):  
Neutron Source ◽  
Uranium Concentration ◽  
Track Detector ◽  
Soil Samples ◽  
Thermal Neutrons ◽  
Military Operations ◽  
Standard Samples ◽  
Fission Tracks ◽  
Two Samples ◽  
Back Ground

In this study a concentration of uranium was measured for twenty two samples of soil distributed in many regions (algolan, almoalmeen, alaskary and nasal streets) from Falluja Cityin AL-Anbar Governorate in addition to other region (alandlos street) as a back ground on the Falluja City that there is no military operations happened on it. The uranium concentrations in soil samples measured by using fission tracks registration in (PM-355) track detector that caused by the bombardment of (U) with thermal neutrons from (241Am-Be) neutron source that has flux of (5×103n cm-2 s-1). The concentrations values were calculated by a comparison with standard samples. The results shows that the uranium concentrations algolan street varies from(1.976- 2.736ppm), almoalmeen street varies from (1.895-2.614ppm), and alaskary street varies from (1.657-2.476ppm), and nasal street (1.657-2.476ppm) the average uranium concentration in other region (alandolos) (0.736-1.588ppm). As a conclusion from the study uranium concentration in the four region above that have military operations is relatively higher than back ground

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