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• Open Access   Article

  Evidence for Chiral Doublet Structure in 122Cs

  Rajesh Kumar

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.7 , Issue.1 , pp.76-79, Feb-2019

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v7i1.7679

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  Abstract
  High-spin states in 122Cs have been studied using 107Ag(19F, p3n)122Cs fusion evaporation reaction at beam energy of 93 MeV. A previously known πh11/2⊗νh11/2 yrast band was confirmed along with a side band which is based on the same configuration. Properties of the chiral doublet bands of the 122Cs nucleus built on the πh11/2⊗νh11/2 configuration are investigated and discussed. The existence of these bands have been discussed in terms excitation energies, B(E2) and B(M1). Linear polarization measurements were performed using the Clover detectors to assign the unknown spins and parities of a few bands. The observed two πh11/2⊗νh11/2 bands are proposed to be a pair of chiral doublet bands based on the systematic comparison with those in the neighbouring odd–odd Cs isotopes.

  Key-Words / Index Term
  γ-γ coincidence, spin-parity, fusion evaporation reaction, Electromagnetic transitions, γ-transitions and level energy, chiral bands

  References
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  Citation
  Rajesh Kumar, "Evidence for Chiral Doublet Structure in 122Cs," International Journal of Scientific Research in Physics and Applied Sciences, Vol.7, Issue.1, pp.76-79, 2019

• Open Access   Article

  Study of blue shift in Iron (Fe) doped ZnO Nanoparticles at different Molarities by Wet Chemical Method

  Anup Kr Kalita, Sanjib Karmakar

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.7 , Issue.1 , pp.80-82, Feb-2019

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v7i1.8082

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  Iron (Fe) doped Zinc Oxide (ZnO) nanoparticle is a very important topic of study in the field of nanoscience and nanotechnology. We have prepared Iron doped ZnO nanoparticles by Wet chemical method. We report the optical properties of Iron (Fe) doped ZnO nanoparticles at different molarities (0.025M, 0.05M and 0.1M). The band gaps of all nanoparticles prepared at different molarities are calculated with the intercept on Y-axis of Tauc plot from UV absorption spectra using UV-Vis Absorption spectroscopy. It has been observed that band gap decreases as the molarity increases. At 0.025M, 0.05M and 0.1M band gap are found to be 4.9eV, 4.89eV and 2.7eV respectively. This reduction in band gap suggest that the band gap of prepared nanoparticles are shifted towards lower energy. This shifting in band gap the blue region gives the idea of blue shift quite well. This blue shift is dependent on the particle size of the nanoparticles.

  Key-Words / Index Term
  Blue shift, Band Gap, Optical proerties, Wet Chemical technique, Molarity

  References
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  Citation
  Anup Kr Kalita, Sanjib Karmakar, "Study of blue shift in Iron (Fe) doped ZnO Nanoparticles at different Molarities by Wet Chemical Method," International Journal of Scientific Research in Physics and Applied Sciences, Vol.7, Issue.1, pp.80-82, 2019

• Open Access   Article

  Analysis of different brands Ayurvedic Drug (Tamra Bhasma) by Non Destructive Technique using NaI(Tl) Scintillation Detector

  Ashwini A, B.R. Kerur

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.7 , Issue.1 , pp.83-87, Feb-2019

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v7i1.8387

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  In the present work ayurvedic drug Tamra bhasma (TB) of different brands were procured, the pellets of different thickness of TB was prepared, by employing the non destructive technique, X-ray mass attenuation coefficients of Tamra bhasma have been measured using the variable energy X-ray source Am241 as a source of characteristic X-rays of low energy (17.781, 22.581, 32.890 and 44.216 keV). These X-rays were used for interaction process with the sample (Tamra bhasma) and incident and transmitted photons are collected by a NaI(Tl) scintillation X-ray detector. The mass attenuation coefficients values are determined by following all procedure such as counting times, background intensities, error involved in counting statistics and good geometry is maintained for the counting of photon beams. The experimentally obtained values are compared with the theoretically calculated values, using the WinXcom data program. From obtained results, it reveals that, the variation in percentage deviation (PD) of experimental and theoretical calculated values of mass attenuation coefficient corresponds to the amount of bioenhancers, incorporated in Tamra bhasma during preparation process. Here variation in percentage deviation reflects drugs as the admixture of elements other than the pharmaceutical active ingredients (here in Tamra bhasma Cu is the Active Pharmaceutical Ingredient) which focuses on the purity and also change in quality of medicines.

  Key-Words / Index Term
  Ayurvedic drug, X-ray Mass attenuation coefficient, Tamra bhasma, NaI(Tl) scintillation/X-ray Detector

  References
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  Citation
  Ashwini A, B.R. Kerur, "Analysis of different brands Ayurvedic Drug (Tamra Bhasma) by Non Destructive Technique using NaI(Tl) Scintillation Detector," International Journal of Scientific Research in Physics and Applied Sciences, Vol.7, Issue.1, pp.83-87, 2019

• Open Access   Article

  Spontaneous Absorption, Einstein’s Rate Equation Approximation and Zero Point Energy

  J. Saikia and G.D. Baruah

  Review Paper | Isroset-Journal (IJSRPAS)

  Vol.7 , Issue.1 , pp.88-91, Feb-2019

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v7i1.8891

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  Abstract
  Einstein’s derivation of Planck’s black body energy distribution law has been examined with the inclusion of the process of spontaneous absorption. It has been shown that the inclusion of the term of spontaneous absorption does not affect the distribution law but leads to an equation which was derived by Max Plank in 1911.The idea of relating spontaneous absorption to zero point energy is discussed in its historical prelude. We have observed that in the steady state temperature T, inclusion of the term of spontaneous absorption with some arbitrarily chosen value of transition probability results in the same distribution law for the black body as derived by Einstein in 1917, plus an additional term which points to the universal, uniform, all-pervasive phenomenon of zero point energy. The physics of zero point energy is well known but the zero point energy that originates from the term of spontaneous absorption is completely new. It is reasonable to believe that spontaneous is non-zero for a ground state which is not perfectly vacuum.

  Key-Words / Index Term
  Spontaneous absorption, Spontaneous emission, Zero point energy, Transition probability

  References
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  Citation
  J. Saikia and G.D. Baruah, "Spontaneous Absorption, Einstein’s Rate Equation Approximation and Zero Point Energy," International Journal of Scientific Research in Physics and Applied Sciences, Vol.7, Issue.1, pp.88-91, 2019

• Open Access   Article

  Nonlinear Fiber Bragg Grating Based Optical Switching and Transistor Characteristics

  Poornima Rawat, Santosh Pawar and Tryambak Hiwarkar

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.7 , Issue.1 , pp.92-95, Feb-2019

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v7i1.9295

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  Abstract
  The present research work provides a very simple analytical analysis of optical switching and transistor characteristics of nonlinear fiber Bragg grating. The nonlinear coupled mode equations have been solved to analyze the wave propagation in grating that exhibit attractive nonlinear optical property that makes them suitable for all-optical communication system. We derived the solutions for both forward and backward propagating field amplitudes considering the propagation of a high intense beam. Using the expression of reflectivity derived under nonlinear regime we examine the nonlinear switching and optical transistor behavior of fiber Bragg grating. We also obtained the expression for peak reflectivity of the grating under nonlinear Kerr regime. Using these expressions we have studied the peak reflectivity as a function of grating length at different input intensities.

  Key-Words / Index Term
  Optical Switching, Optical Transistor, Peak Reflectivity, fiber Bragg Grating, Nonlinear Coupled Mode Equation

  References
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  Citation
  Poornima Rawat, Santosh Pawar and Tryambak Hiwarkar, "Nonlinear Fiber Bragg Grating Based Optical Switching and Transistor Characteristics," International Journal of Scientific Research in Physics and Applied Sciences, Vol.7, Issue.1, pp.92-95, 2019