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The continuous measurement of any physical entity is the finest approach to see the real-time variation of any concentration. In the present study, an effort has been made to see the continuous variation of radon and thoron progeny concentration (EERC and EETC) using time-integrated flow-mode sampler in which the deposition of progeny particles has been done in the filter paper in which an absorber has been mounted which specifically absorbs the alpha energies emitted by the progenies of radon or thoron. Also, the variation of thoron progeny concentration (EETC) using two different types of SSNTDs, LR-115 and CR-39, has been seen and it has been found that the measurement of EETC using both of the detectors is very much comparable with positive relationship (R = 0.89) between the results obtained.
Wydawca
Czasopismo
Rocznik
Tom
Strony
1267--1272
Opis fizyczny
Bibliogr. 19 poz.
Twórcy
autor
- Department of PhysicsH. N. B Garhwal University Tehri Garhwal India
autor
- Department of PhysicsH. N. B Garhwal University Tehri Garhwal India
autor
- Department of Physics Indian Institute of Technology Roorkee India
autor
- Department of Physics Govt. P. G. College, New Tehri Tehri Garhwal India
autor
- Department of PhysicsH. N. B Garhwal University Tehri Garhwal India
Bibliografia
- 1. Cross WG, Tommasino L (1970) A rapid reading technique for nuclear particle damage tracks in thin foils. Radiat Effects 5:85–89
- 2. Durrani SA, Ilic R (1997) Radon measurements by etched track detectors: applications in radiation protection, earth sciences and the environment. World Scientific, Singapore
- 3. Field R, Steck D, Smith B et al (2000) Residential radon gas exposure and lung cancer. Am J Epidemiol 151:1091–1102
- 4. Fleischer RL, Price PB, Walker RM (1975) Nuclear tracks in solids: principles and applications. University of California Press, Berkeley
- 5. Jílek K, Thomas J, Tomásek L (2010) First results of measurement of equilibrium factors F and unattached fractions fp of radon progeny in Czech dwellings. Nukleonika 55:439–444
- 6. Kaur M, Kumar A, Mehra R, Mishra R (2018) Comparative study of 222Rn/220Rn progeny concentration and estimation of age-dependent dose due to inhalation of radon progeny for different body organs. Hum Ecol Risk Assess Int J 24:534–550
- 7. Malik SR, Durrani SA, Fremlin JH (1973) A comparative study of the spatial distribution of uranium and of Tl producing minerals in archaeological materials. Archaeometry 15:249–253
- 8. Mishra R, Sapra BK, Mayya YS (2009) Development of an integrated sampler based on direct 222Rn/220Rn progeny sensors in flow-mode for estimating unattached/attached progeny concentration. Nucl Instrum Methods Phys Res Sect B Beam Interact Mater Atoms 267:3574–3579. https://doi.org/10.1016/j.nimb.2009.08.021
- 9. Mishra R, Sapra BK, Mayya YS (2015) Emerging trends in 222Rn and 220Rn decay products detection. Solid State Phenom 238:134–139. https://doi.org/10.4028/www.scientific.net/SSP.238.134
- 10. Nikezic D, Janicijevic A (2002) Bulk etching rate of LR115 detectors. Appl Radiat Isot 57:275–278
- 11. Porstendörfer J (1984) Behaviour of radon daughter products in indoor air. Radiat Prot Dosim 7:107–113
- 12. Ramola RC, Singh M, Singh S, Virk HS (1987) Measurement of indoor radon concentration using LR-115 plastic track detector. Indian J Pure Appl Phys 25:127–129
- 13. Ramola RC, Prasad M, Rawat M et al (2015) Comparative study of various techniques for environmental radon, thoron and progeny measurements. Radiat Prot Dosim 167:22–28. https://doi.org/10.1093/rpd/ncv215
- 14. Tokonami S, Sun Q, Yonehara H, Yamada Y (2002) A simple measurement technique of the equilibrium equivalent thoron concentration with a CR-39 detector. Jpn J Health Phys 37(1):59–63
- 15. UNSCEAR (2000) Sources and effects of ionizing radiation. United Nations Scientific Committee on the Effects of Atomic Radiation UNSCEAR 2000 Report to the General Assembly, with Scientific Annexes
- 16. Wilson CK (1982) The jumping spark counter and its development as an aid to measuring alpha activity in biological and environmental samples. Nucl Tracks Radiat Meas 6:129–139
- 17. Yip CWY, Ho JPY, Koo VSY et al (2003) Effects of stirring on the bulk etch rate of LR 115 detector. Radiat Meas 37:197–200. https://doi.org/10.1016/s1350-4487(03)00045-3
- 18. Yu KN, Nikezic D (2011) Long-term determination of airborne radon progeny concentrations using LR 115 solid-state nuclear track detectors. Radiat Meas 46:1799–1802. https://doi.org/10.1016/j.radmeas.2011.04.025
- 19. Zhuo W, Tokonami S, Yonehara H, Yamada Y (2002) A simple passive monitor for integrating measurements of indoor thoron concentrations. Rev Sci Instrum 73:2877. https://doi.org/10.1063/1.1493233
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Bibliografia
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