Effective Atomic Number Dependence of Radiological Parameters of Some Organic Compounds at 122 KeV Gamma Rays

 

• Mohinder SinghDepartment of Basic and Applied Sciences, Punjabi university, Patiala, 147002.
• Akash TondonDepartment of Physics, Punjabi university, Patiala, 147002.
• Bhajan SinghDepartment of Physics, Punjabi university, Patiala, 147002.
• B. S. SandhuDepartment of Physics, Punjabi university, Patiala, 147002.

DOI: https://doi.org/10.15415/jnp.2018.52027

Keywords: Effective atomic number, mass-energy absorption coefficient, mass attenuation coefficient, HVL, CT number

Abstract

Mass attenuation coefficient is a fundamental parameter of radiation interaction, from which the other radiological parameters like half Value Layer [HVL], tenth Value Layer [TVL], total atomic and electronic cross-sections, mass energy absorption coefficient, KERMA, CT number and effective atomic number are deduced. These parameters are extensively required in a number of fields such as diagnostic radiology, gamma ray spectroscopy, fluorescence analysis and reactor shielding. In the present work, mass attenuation coefficients are determined experimentally for some organic compounds at 122 keV incident photons using narrow-beam transmission geometry to establish a relation between effective atomic number (Zeff) and other deduced parameters. The experimental data for all these parameters are compared with the values deduced from WinXcom software package and are found to agree within experimental estimated errors. This study gives some insight about the photon interaction in some organic compounds whose effective atomic numbers match with some human body fluids.

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Issue

Vol 5 No 2 (2018)

How to Cite

Mohinder Singh; Akash Tondon; Bhajan Singh; B. S. Sandhu. Effective Atomic Number Dependence of Radiological Parameters of Some Organic Compounds at 122 KeV Gamma Rays . J. Nucl. Phy. Mat. Sci. Rad. A. 2018, 5, 299-310.

Determination of Cu, Zn, Mn & Fe Metals in Soil Employing the EDXRF & FAAS Techniques and Comparative Study of Results

VIRENDRA SINGH1,* , DIWAKAR PADALIA2 , KAMAL DEVLAL3

1 Department of Physics, G. B. Pant University of Ag. & Tech., Pantnagar, U.S.Nagar 263145, India

2 Department of Physics, K.R Mangalam University, Gurgaon 122103, India

3 Department of Physics, School of Science, Uttarakhand Open University, Haldwani 263139, India

Abstract Two analytical spectroscopic techniques viz. EDXRF and FAAS were employed in analyzing the four heavy metals i.e. Cu, Zn, Mn and Fe in 24 soil samples. The heavy metals in understudy soil were found to have very low to high concentration range and so both techniques were compared for a broader range of concentrations. Two methods, open vessel digestion and microwave oven digestion, were used to prepare the liquid samples for FAAS analysis. The results of both of the EDXRF and FAAS techniques were found comparable when high concentration element Fe was determined. However, for the low concentration values, the results were dissimilar. Some statistical methods like regression and Levene’s test are used to compare the results of both the techniques.

DOI: https://doi.org/10.15415/jnp.2017.42032

LINK: http://dspace.chitkara.edu.in/jspui/bitstream/1/829/4/42033_JNP_varindra.pdf

Binary Fission fragmentation of 184 466,476X

S. SUBRAMANIAN1,2, C. KARTHIKRAJ3 , AND S. SELVARAJ1

1 Department of Physics, The M. D. T. Hindu College Tirunelveli - 627010, Tamilnadu, India.

2 Department of Physics, V. O. Chidambaram College Tuticorin - 628008, Tamilnadu, India.

3 Department of Physics, Nanjing University Nanjing - 210093, People’s Republic of China.

Email: ssmanian73@gmail.com

Abstract Based on the statistical theory of fission, we discuss here the binary fission fragmentation of these giant nuclear systems formed in low energy U + U collisions. Here, the mass and charge distribution of fragments from the binary fission of these systems are studied at T = 1 and 2 MeV. From our results at T = 1 MeV, fragments in the near-asymmetric and near-symmetric regions pronounce higher yield values. However, at T = 2 MeV, our results are grossly different. Furthermore, the binary fragmentation with the largest yield consists of at least one closed shell nucleus. Different possible binary fission modes are presented to look for U + Ugiant nuclear systems.

DOI: https://doi.org/10.15415/jnp.2017.42032

LINK: http://dspace.chitkara.edu.in/jspui/bitstream/1/828/4/42032_JNP_Subramanian.pdf

Understanding the Basics of Final Unification With Three Gravitational Constants Associated With Nuclear, Electromagnetic and Gravitational Interactions

U. V. S. SESHAVATHARAM1 AND S. LAKSHMINARAYANA2

1 Honorary Faculty, I-SERVE, Survey no-42, Hitex road, Hitech city, Hyderabad-84, Telangana, India.
2 Department of Nuclear Physics, Andhra University, Visakhapatnam-03, AP, India

Email: seshavatharam.uvs@gmail.com

Abstract With three fundamental gravitational constants assumed to be associated with strong interaction, electromagnetic interaction and gravity, we review the basics of final unification.

DOI:https://doi.org/10.15415/jnp.2017.42031

LINK: http://dspace.chitkara.edu.in/jspui/bitstream/1/827/4/42031_JNP_Seshavatharam.pdf

Possible Alpha and 14C Cluster Emission From Hyper Radium Nuclei in The Mass Region A = 202-235

K. P. SANTHOSH AND C. NITHYA

School of Pure and Applied Physics, Kannur University, Swami Anandatheertha Campus, Payyanur 670327, INDIA

Email: drkpsanthosh@gmail.com

Abstract The possibilities for the emission of 4 He and 14C clusters from hyper 202 235 - Λ Ra are studied using our Coulomb and proximity potential model (CPPM) by including the lambda-nucleus potential. The predicted half lives show that hyper Λ 202 231 - Ra nuclei are unstable against 4 He emission and 14C emission from Λ 217 229 - Ra are favorable for measurement. Our study also show that hyper Λ 202 235 - Ra are stable against hyper Λ 4 He and Λ 14C emission. The role of neutron shell closure (N = 126) in Λ 213Rn daughter and role of proton and neutron shell closure (Z = 82, N = 126) in Λ 209Pb daughter are also revealed. As hyper nuclei decays to normal nuclei by mesonic/non-mesonic decay and since most of the predicted half lives for 4 He and 14C emission from normal Ra nuclei are favorable for measurement, we presume that alpha and 14C cluster emission from hyper Ra nuclei can be detected in laboratory in a cascade (two-step) process..

DOI: https://doi.org/10.15415/jnp.2017.42030

LINK: http://dspace.chitkara.edu.in/jspui/bitstream/1/826/4/42030_JNP_Santosh01.pdf