Volume-2 (National Conference on Current Advancements in Physics)
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Paper Type | : | Research Paper |
Title | : | Studies on Heavy Particle Decay from 216-226Fr using Different Nuclear Potentials |
Country | : | India |
Authors | : | Indu Sukumaran || K. P. Santhosh |
Abstract: The heavy particle decays from various isotopes of 216-226Fr have been studied by evaluating the decay half lives using the Coulomb and proximity potential model (CPPM) and also using the nuclear potentials, Bass 1973, Bass 1977, Bass 1980 and BW 1991. Comparing the calculated values with the available experimental data, it is observed that the calculations using CPPM and Bass potential, the Bass 1973, are in excellent agreement with the experimental value. All other nuclear potentials; Bass 1977, Bass 1980 and BW 1991; showed one order difference in half lives with the experimental value. The existence of the well established magic number.........
Keywords: Heavy particle radioactivity, Geiger-Nuttall law, Universal curve, Proximity potential.
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alpha decay, Soviet Journal of Particles and Nuclei, 11(6), 1980, 528-541.
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Physics, 59(2), 2007, 301-310.
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Paper Type | : | Research Paper |
Title | : | Evaporation residue cross section for the synthesis of superheavy element Fl in the reactions 242,244Pu+48Ca |
Country | : | India |
Authors | : | V. Safoora || K. P. Santhosh |
Abstract: Systematic calculations of the production cross section for the synthesis of superheavy elements 290,292Fl using the reactions 48Ca+242Pu and 48Ca+244Pu are performed. We have studied the interaction barriers for these reactions against the distance between the centers of the projectile and target by taking Coulomb and proximity potential as the scattering potential. The fusion probability and survival probability of excited compound nucleus are calculated...........
Keywords - Superheavy elements, Cross section, Coulomb and proximity potential, Evaporation residue.
[1]. B. B. Back, H. Esbensen, C. L. Jiang and K. E. Rehm, Recent developments in heavy-ion fusion reactions, Reviews
of Modern Physics, 86(1) 2014, 317 -360.
[2]. Yu. Ts. Oganessian, V. K. Utyonkov, Superheavy nuclei from 48 Ca-induced reactions, Nuclear Physics A, 944,
2015, 62-98.
[3]. S. Hofmann, S. Heinz, R. Mann, J. Maurer, G. Munzenberg, S. Antalic, W. Barth, H. G.Burkhard, L. Dahl, K.
Eberhardt, R.Grzywacz, J. H. Hamilton, R. A. Henderson, J. M.Kenneally, B. Kindler, I. Kojouharov, R. Lang, B.
Lommel, K. Miernik, D. Miller, K. J. Moody, K. Morita, K. Nishio, A. G. Popeko13, J. B. Roberto, J. Runke, K.
P.Rykaczewski, S. Saro, C. Scheidenberger, H. J. Schott, D. A. Shaughnessy, M. A. Stoyer,P. Thorle-Pospiech, K.
Tinschert, N. Trautmann, J. Uusitalo, and A. V. Yeremin, Review of even element super-heavy nuclei and search for
element 120, The European Physical Journal A, 52(4), 2016, 180-213.
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Paper Type | : | Research Paper |
Title | : | Ternary fission of 250,252Cf isotopes with 3H and 6He as light charged particle |
Country | : | India |
Authors | : | Sreejith Krishnan || K. P. Santhosh |
Abstract: The spontaneous cold ternary fission of 250,252Cf isotope with 3H and 6He as light charged particle with fragments in equatorial and collinear configuration have been studied using the Unified ternary fission model (UTFM). In both equatorial and collinear configuration, the fragment combinations with the highest relative yield are found to be the same. In the 3H accompanied ternary fission of 250Cf and 252Cf isotope, the highest relative yield is found for the ternary splitting 114Pd+3H+133Sb and 116Pd+3H+133Sb respectively.............
Keywords: Spontaneous fission, cold ternary fission, relative yield, unified ternary fission model.
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[2]. K. P. Santhosh, Sreejith Krishnan and B. Priyanka, Light charged particle accompanied ternary fission of 242Cm using the Coulomb and proximity potential, The European Physical Journal A, 50(4), 2014, 66.
[3]. K. P. Santhosh, Sreejith Krishnan and B. Priyanka, The emission probabilities of long range alpha particles from even-even 244-252Cm isotopes, Journal of Physics G: Nuclear and Particle Physics, 41(10), 2014, 105108.
[4]. K. P. Santhosh, Sreejith Krishnan and B. Priyanka, 34Si accompanied ternary fission of 242Cm in equatorial and collinear configuration, International Journal of Modern Physics E, 23(11), 2014, 1450071.
[5]. K. P. Santhosh, Sreejith Krishnan and B. Priyanka, Isotopic yield in alpha accompanied ternary fission of 252Cf, International Journal of Modern Physics E, 24(01), 2015, 1550001.
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Paper Type | : | Research Paper |
Title | : | Electron Pair in Low Lying Excited States in a Semimagnetic Quantum Dot |
Country | : | India |
Authors | : | K.Mari Raj || R. Muneesvaran || N.G. Prasanna || M.S.S.Saravanakumaar |
Abstract: Using the method of few-body physics, the solutions of ground state and some low-lying excited states[such as 1s -1s , 1s – 1p and 1s – 1d ] of electron pair in a semimagnetic quantum dot have been obtained. The dependence of the confined energies of the electron pair in a semimagnetic quantum dot is studied as a function of dot radius, different barrier height and inter electron distances. Our results are good in agreement with existing literatures..........
Keywords: Confined energy, semi magnetic quantum dot, variation principle
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Paper Type | : | Research Paper |
Title | : | Electronic, Optical and Vibrational analysis of Nitrobenzene Adsorbed on Silver Cluster |
Country | : | India |
Authors | : | U.Reeta Felscia || Beulah J.M.Rajkumar |
Abstract: Interaction between nitrobenzene and silver cluster is investigated using the Density Functional Theory (DFT) at the B3PW91 level of theory. Adsorption causes a variation in the structural parameters. The charge transfer from silver cluster to nitrobenzene is identified from the plot of the molecular electrostatic potential (MEP) surface and natural population analysis (NPA). A marked enhancement in the calculated polarizability values is also obtained. Enhancement in the first order hyperpolarizability of nitrobenzene-Ag3can find applications in the design of NLO devices. Red shift in C-N stretching vibration indicates that the nitrobenzene is attached to the cluster through the nitro group.
Keywords: DFT, Natural Population Analysis, Non Linear Optics, Nitrobenzene, Molecular Electrostatic Potential.
[1]. L.Zhang, Y.Cao, N.S. Colella, Y.Liang, J.L.Brédas, K. N. Houk and A.L. Briseno, Unconventional, Chemically Stable, and Soluble Two-Dimensional Angular Polycyclic Aromatic Hydrocarbons: From Molecular Design to Device Applications,Acc. Chem. Res. 48(3), 2015, 500–509.
[2]. Jayabharathi, J.,Thanikachalam,V., Jayamoorthy,K., Perumal,M.V.,Computational studies of 1,2-disubstituted benzimidazole derivatives,SpectrochimicaActa Part A, 97, 2012,131–136.
[3]. T.N. Rekha, M. Umadevi, B.J.M. Rajkumar,Structural and spectroscopic study of adsorption of naphthalene on silver, J. Mol. Struct. 1079,2015, 155–162.
[4]. E.D.D'silva,D.N.Rao,R.Philip,R.J.Butcher,Rajnikant,S.M.Dharmaprakash,Synthesis, growth and characterization of novel second harmonic nonlinear chalcone crystalJ.Phys.Chem.Solids.72(6), 2011, 824–830.
[5]. M.Karabacak,M.Cinar,M.Kurt,A.Poiyamozhi,N.Sundaraganesan,The spectroscopic (FT-IR, FT-Raman, UV and NMR) first order hyperpolarizability and HOMO–LUMO analysis of dansyl chloride. Spectrochim.Acta,PartA 117, 2014, 234–244.
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Paper Type | : | Research Paper |
Title | : | Conformational, Vibrational Spectroscopic and Quantum Chemical Studies on 5-formyl-1h-pyrrole-2-carboxylic acid: A DFT Approach |
Country | : | India |
Authors | : | S. Christopher Jeyaseelan || R. Mohamed Asath || R. Premkumar || A. Milton Franklin Benial |
Abstract: The potential energy surface (PES) scan was performed for 5-formyl-1h-pyrrole-2-carboxylic acid (FHPC) molecule and the most stable optimized molecular structure was predicted using DFT/B3LYP method with 6-31G basis set. The theoretical vibrational frequencies were calculated for the optimized FHPC molecule using DFT/B3LYP method with cc-pVTZ basis set by Gaussian 09 Program package. The vibrational frequencies were assigned on the basis of potential energy distribution (PED) calculation using VEDA 4.0 program. The molecular reactivity, stability, intramolecular charge transfer studies and the calculation of ionization energy, electron affinity..........
Keywords: 5-formyl-1 h-pyrrole-2-carboxylic acids, PES scan, Vibrational analysis, FMOs, bioactivity
[1] Varun Bhardwaj, Divya Gumber, Vikrant Abbot, Saurabh Dhimana and Poonam Sharma RSC Adv., 5, 2015, 15233-15266.
[2] M. S. Mohamed, S. A. Ali, D. H. A. Abdelaziz and Samar S. Fathallah , Biomed Research International, 2014.
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[4] R. Mohamed Asath, R.Premkumar, T. Mathavan, A. Milton Franklin Benial, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 175, 2017, 51-60.
[5] G. Mahalakshmi, V. Balachandran, Spectrochemica Acta Part A: Molecular and Biomolecular Spectroscopy, 2015, DOI: 10.1016/j.saa.2014.06.157
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Paper Type | : | Research Paper |
Title | : | DFT Studies on Structural Stability and Magnetic Properties of XTiSb (X=Fe,Co) |
Country | : | India |
Authors | : | R. Murugeswari || A.Milton Franklin Benial || R. Rajeswarapalanichamy |
Abstract: The structural stability of titanium based magnetic materials XTiSb (X=Fe,Co) is investigated by calculating the total energies for both magnetic and nonmagnetic phases by the first principles calculations based on density functional theory using Vienna ab-initio simulation package (VASP). The ground state parameters such as lattice constant, cell volume and bulk modulus are calculated. The calculated lattice parameters are in agreement with earlier reported values..........
Key Words: Ab-initio calculation, Electronic structure, Magnetic property, Mechanical properties.
[1]. Mitsuo Niinomi, Science and Technology of Advanced Materials 4, 2003, 445–454.
[2]. Kathy Wang, The use of titanium for medical applications in the USA, Materials Science and Engineering, A, 213, 1996, 134- 137.
[3]. John P.Perdew, Kieron Burke and Matthias Ernzerhof, Generalized Gradient Approximation Made Simple, Physical Review Letters 77 (18), 1996, 3865-3868.
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[5]. Bin Xu, Jing Zhang, Jianchu Liang, Guoying Gao and Lin Yi, Journal of Solid State Chemistry, 192, 2012, 351-355.
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Paper Type | : | Research Paper |
Title | : | First Principles Study of Structural Stability and Electronic Structure of 4d Transition Metal Carbides TMC2 (TM= Ru, Rh, Pd) |
Country | : | India |
Authors | : | M. Manikandan || M. Santhosh || A. Amudhavalli || R. Rajeswarapalanichamy || K. Iyakutti |
Abstract: Structural stability of 4d – transition metal dicarbides (TMC2) is analysed among the different phases, tetragonal (P4/mbm), fluorite (Fm3m), orthorhombic (Pnnm), pyrite (Pa-3), and hexagonal (P6/mmm) using first principles calculations. The most stable structure for these carbides is found to be hexagonal structure. The calculated formation enthalpy values show that these carbides can be easily synthesized at normal pressure. A structural phase transition is predicted under high pressure in these carbides. The electronic structure reveals that these carbides are metallic under ambient condition. The elastic constant calculations indicate that all these carbides are mechanically stable and ultra incompressible characterized by large bulk moduli.
Key Words: Electronic structure; First principles study; mechanical property; Phase transition
[1]. H. Holleck, Material selection for hard coatings, Journal of Vacuum Science & Technology A 4, 2661 (1986).
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Paper Type | : | Research Paper |
Title | : | Preparation and Characterization of ZnO Thin Films by Using Two Different Techniques |
Country | : | India |
Authors | : | S.Sivapriya || K.Balasubramanian |
Abstract: The ZnO thin films were deposited on glass substrate by Chemical Bath Deposition (CBD) and Successive Ionic Layer Adsorption and Reaction (SILAR) method. The prepared thin films were characterized by X-Ray Diffraction analysis (XRD), Scanning Electron Microscope (SEM), Energy Dispersive X-ray Analysis (EDXA) and UV-VIS Spectrophotometer. The XRD analysis shows the prepared thin films are polycrystalline nature and the average grain size of the films were calculated by using Debye Sherrie's formula. The study of surface morphology revels that the deposited ZnO films has Nano rod in shape.............
Keywords: ZnO, Thin film, CBD and SILAR.
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Paper Type | : | Research Paper |
Title | : | Studies on Molecular Interactions of Bromoform and Ethyl Bromide at Four Different Temperatures |
Country | : | India |
Authors | : | K. Umamakeshvari || U. Sankar |
Abstract: Refractive indices of Bromoform and benzene, Ethyl bromide and benzene with five different concentrations at four different temperatures are measured using Abbe's refractometer. The experimental values are compared with those estimated by the mixing rules Eyring-John (EJ), Gladstone-Dale (G-D), Newton (Nw) and Heller (H) methods. Comparison of various mixing rules has been expressed in terms of root mean square deviation (RMSD).
Keywords: Refractive index, Abbe's refractometer, Benzene, Bromoform, Binary Mixtures,Mixing Rules.
[1]. R.J.Sengwa, S. Sankhla, V.Khatri, S.Choudhary, Static permittivity and molecular interactions in binary mixtures of ethanolamine with alcohols and amides, Fluid Phase Equilib, 293 ,2010, 137-140.
[2]. C.P. Smyth,Dielectric anisotropy and electrical properties of the copper phthalocyanine (CuPc): 4-4'-n-Heptylcyanobiphenyl(7CB) composite liquid crystals, Molecular Interactions,Vol.II, John Wiley &Sons Ltd,1980.
[3]. V.A. Rana, H.A. Chaube,Relative permittivity, density, viscosity,refractive index and ultrasonic velocity of binary mixture of ethylene glycol, monophenylether and 1-hexanol at different temperatures, J.Mol. Liq.187 ,2013, 66-73.
[4]. Balamurugan D, Kumar S & Krishnan S, Dielectric relaxationstudies of higher order alcohol complexes with aminesJ Mol Liqs, 122 ,2005, 11.
[5]. C M Trivedi & V A Rana, Static permittivity, refractive index, density and related properties of binary mixtures of pyridine and 1-propanol at different temperatures, 52 ,2014, 183-191.
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Paper Type | : | Research Paper |
Title | : | Galvanic Corrosion Characteristics of Aluminium Alloy with Group II Metal |
Country | : | India |
Authors | : | Vijayarani K || VishnuDevan M || Natarajan R |
Abstract: The Electrochemical behavior of Al -Zn5% sacrificial anode with selected element (Sr) has been investigated in 3% sodium chloride solution. Corrosion experiment was mounted to determine the optimal effect of Sr on the efficiencies of the aluminium alloy anodes. The unexposed sample was subjected to micro structure characterization by SEM and XRD techniques. The impedance measurement and microscopic observation confirmed that better activity was realized with Al-Zn-Sr alloy compared with base Al-Zn5% alloy. The addition of Sr shifts open circuit potential (~ 50 mV) and corrosion potential (~ 60 mV) to a negative value...........
Keywords: Alkaline earth metal, aluminium alloy, efficiency, sacrificial anode and strontium.
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[3]. Reboul, M,, Gimenez P, Rameau J.J, (A proposed activation mechanism for Al– Zn-In anodes", aluminium pechiney, Centre de Recherches et de Development, France1982..
[4]. Li, B,. Logan, B.E., "The impact of ultraviolet light on bacterial adhesion to glass and metal oxide-coated surface". Colloids and Surfaces B: Biointerfaces, 41(2-3) 2005, 153-161. [5]. Shibli S.M.A, Gireesh V.S "Activation of aluminium alloy sacrificial anodes by selenium".Corrosion Science 47(8) 2005, 2091-2097.
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Paper Type | : | Research Paper |
Title | : | Nucleation kinetics and dielectric characterization of L-Proline Potassium Chloride (LPPC) single crystals |
Country | : | India |
Authors | : | V. Vasantha Kumari || P. Selvarajan |
Abstract: Semiorganic single crystals of L-proline potassium chloride (LPPC) were successfully grown from its aqueous solution by slow evaporation solution growth method at room temperature. The nucleation studies were carried out for the L-proline potassium chloride salt at room temperature. The critical nucleation parameters such as radius of critical nucleus, Gibbs' free energy change, and number of molecules in the critical nucleus were determined. Dielectric measurements for the grown L-proline potassium chloride crystals were carried out for different frequencies such as 1 kHz, 10 kHz, 100 kHz, 1 MHz, and different temperatures ranging from 30° to 120°C. It is found that the dielectric constant and dielectric loss increases with increase of temperature and decreases with increase of frequency whereas a.c conductivity increases with increase in temperature and frequency.
Keywords: Ac conductivity, critical radius, Dielectric constant, Dielectric loss, Nucleation
[1]. S. Myung, Pink, M.H. Baik and David Clemmer,DL-Proline, ActaCrystallography C, 61, 2005, 506-508.
[2]. S. Boomadevi and R.Dhanasekaran, Synthesis, crystal growth and characterization of L-pyrrolidone -2 -carboxylic acid (L-PCA) crystal, J. Crystal Growth, 261,2004, 70-76.
[3]. T. Uma Devi., N. Lawrence, R. Ramesh Babu and K.Ramamurthi, Growth and Characterization of L-prolinium picrate single crystal: A promising NLO crystal, J. Crystal Growth, 310,2008, 116-123.
[4]. J. Thomas Joseph Prakash and S. Kumararaman, Growth and characterization of L- proline cadmium chloridemonohydrate single crystals, Materials Letters, 62, 2008 4097-4099.
[5]. S.Suresh, A. Ramanand, D.Jayaraman and P.Mani, Dielectric studies of L-Prolinium Tartrate (LPT) NLO Single crystals, Journal of optoelectronics and Advanced materials, 4,2010, 1743-1746.
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Paper Type | : | Research Paper |
Title | : | Studies on Various Properties of Diglycine Lithium Sulfate Crystals Grown By Solution Method |
Country | : | India |
Authors | : | G.Emerson Robin || U.Sankar || T.Chithambarathanu || P.Selvarajan |
Abstract: Organic crystals are soft in nature, have low thermal stability, low hardness, low chemical stability and difficult to polish. To overcome these problems, a new class of organic-inorganic hybrid compounds known as semiorganic materials are considered by many researchers. In this work, a semiorganic crystal namely diglycine lithium sulphate was grown and characterized. Single crystals of diglycine lithium sulfate were grown by solution method. The harvested crystals were characterized by solubility studies, XRD studies, SHG studies, microhardness studies, LDT studies, photoconductivity studies and dielectric studies and the results are presented.
Keywords: Single crystal, solution growth, NLO material, Charactrization, semiorganic
[1]. C. Krishnan a, P. Selvarajan b, S. Pari, Current Applied Physics 10 (2010) 664–669.
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Paper Type | : | Research Paper |
Title | : | Characterization of Glycine Ammonium Sulphate Crystals grown by Slow Evaporation Technique |
Country | : | India |
Authors | : | N.Rathna || V.S.John || T.Chithambarathanu || P.Selvarajan |
Abstract: The search for new materials possessing high optical nonlinearity is an important task because of their practical applications in harmonic generation, switching and other optical signal processing devices. Some complexes of amino acids with inorganic salts are reported to be promising materials for optical second harmonic generation. An amino acid complex namely glycine ammonium sulphate was synthesized by dissolving glycine and ammonium sulphate in 1:1.5 molar ratio using double distilled water as the solvent by the free evaporation method...............
Keyword: Crystal growth, Dielectric crystal, Microhardness, Single crystal, SHG, TG/DTA, NLO
[1]. M. Narayan Bhat, S.M. Dharmaprakash, J. Cryst. Growth 235 (2002) 511.
[2]. A. Deepthy, H.L. Bhat, J. Cryst. Growth 226 (2001) 287.
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[5]. A.Deepthy and H.L.Bhat, J.Cryst.Growth 226 (2001) 287-293.
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Paper Type | : | Research Paper |
Title | : | Dielectric Constant Measurements of Pure and Nickel Sulphate Doped KDP Crystals grown by Gel Medium |
Country | : | India |
Authors | : | M.P.Rameela || Vinu Bharathi || T.H.Freeda || T. Asaithambi |
Abstract: Crystal growth is an interdisciplinary subject covering physics, chemistry, material science, chemical engineering, metallurgy, crystallography, mineralogy, etc. In past few decades, there has been a growing interest on crystal growth processes, particularly in view of the increasing demand of materials for technological applications. Optically good quality pure and metal doped KDP crystals have been grown by microbial free gel growth method at room temperature and their characterization have been studied. Gel method is a very simple method and can be utilized to synthesize crystals which are having low solubility............
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[3]. Bo Wang. Chang – ShuiFang,Sheng –Iai Wang, Xun Sun, Quing-tianGu,Yi-ping Li, Xin-guangXu, JianqinZhang,BingLiu, KDP doped with potassium carbonate as additives, .J.Cryst.Growth ,310, (2008) 5341-5346.
[4]. N.Pattanaboonmee, P.Ramasamy, P.Manyum, Procedings of Engineering., 32 (2012) 1019-1025.
[5]. Dongli Xu, Dongfeng Xue. J.Cryst. Growth .,310 (2008) 1385
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Paper Type | : | Research Paper |
Title | : | Spectral Characterization, Dielectric, Mechanical and SHG Studies of Thiourea Doped L-Alanine Cadmium Chloride Crystals |
Country | : | India |
Authors | : | M.Malathi || S.L.Rayar || P.Selvarajan |
Abstract: L-alanine cadmium chloride (LACC) crystals doped with thiourea were grown by slow evaporation technique. The solubility of the samples were determined gravimetrically at various temperatures in the range 30 - 50 oC. Single crystals of thiourea doped L-alanine cadmium chloride were tested for the crystal structure by single crystal XRD studies. The values of SHG efficiency and laser damage threshold were determined for the samples. Dielectric constant and loss factor of the grown crystals were determined at different frequencies and temperatures. Microhardness and third order NLO parameters were measured for the samples. Spectral studies were carried out for the grown crystals and the results are presented.
Keywords: Metal organic crystal, doping, XRD, SHG, LDT, Dielectric, Hardness
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Paper Type | : | Research Paper |
Title | : | Role of multipolarity–Six deformation parameter on exotic decay half-lives of Berkelium nucleus |
Country | : | India |
Authors | : | G. M. Carmel Vigila Bai || R. Nithya Agnes |
Abstract: Using Cubic plus Yukawa plus Exponential Model (CYEM), we have calculated the half lives of various clusters from neutron rich 238-252Bk parent nuclei. In our model, the zero point vibration energy is explicitly included without violating the conservation of energy and the nuclear inertia mass coefficient dependent on the centre of mass distance has been used. We have made our calculations by considering Coulomb, Yukawa plus exponential potential as interacting barrier for separated fragments and cubic potential for the overlapping region..........
Keywords: Exotic decay, Q-value, spontaneous fission and Deformation,
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