Laser Plasma Section

List of Papers published in International Journals (since 2010)

  1. Study of high-order harmonic generation from nanoparticles H. Singhal, R.A. Ganeev, P.A. Naik, A.K. Srivastava, A. Singh, R. Chari, R.A. Khan, J.A. Chakera, and P.D. Gupta Journal of Physics B : Atomic, Molecular and Optical Physics 43, 025603 (2010)

  2. Flux of multiple charged metal ions of high energy from plasma produced by a moderate energy laser pulse
    I.V. Romanov, A.V. Brantov, A.A. Rupasov, A.S. Shikhanov, V.L. Paperny, A. Moorti, R.K. Bhat, P.A. Naik, and P.D. Gupta
    Journal of Physics D : Applied Physics, 43, 035201 (2010)2

  3. Generation of high collimated, monoenergetic electron beam from laser-driven plasma-based acceleration
    S.R. Bobbili, A.Moorti, P.A. Naik, and P.D. Gupta
    New Journal of Physics 12, 045011 (2010)

  4. Enhanced harmonic generation in C60-containing plasma plumes
    R.A. Ganeev, H. Singhal, P.A. Naik, J.A. Chakera, A.K. Shrivastava, T.S. Dhami, M.P. Joshi, P.D. Gupta
    Applied Physics B-100, 581-585 (2010)

  5. Fast ion generation in the cathode plasma jet of a multi-picosecond laser-triggered vacuum discharge
    A. Moorti, P.A. Naik, and P.D. Gupta
    Review of Scientific Instruments 81, 033504 (2010)

  6. Particular Features of Higher Harmonics Generation in Nanocluster-Containing Plasmas Using Single-and Two-Colour Pumps
    R.A. Ganeev, H. Singhal, P.A. Naik, J.A. Chakera, M. Tayyab, A.K. Shrivastava, T.S. Dhami, M.P. Joshi, A. Singh, R. Chari, S.R. Kumbhare, R.P. Kushwaha, R.A. Khan, R.K. Bhat, and P.D. Gupta
    Optics and Spectroscopy Vol. 108, No. 5, 787 (2010)

  7. Chirped pulse shadowgraphy for single shot time resolved plasma expansion measurements
    Y.B.S.R. Prasad, S. Barnwal, P.A. Naik, J.A. Chakera, R.A. Khan, and P.D. Gupta
    Applied Physics Letters, Vol. 96, 221503 (2010)

  8. Optimization of single layer sol-gel anti-reflection coatings on KDP crystals in quadrature geometry for second harmonic conversion of high power Nd: glass lasers
    R.Pareek, M.N. Kumbhare, A.S. Joshi, Arup Banerjee, and P.D. Gupta
    Optical Engineering 49 (9), 091010 (2010)

  9. Formation of metal nanoparticles of various sizes in plasma plumes produced by Ti:sapphire laser pulses
    U. Chakravarty, P.A. Naik, C. Mukherjee, S.R. Kumbhare, and P.D. Gupta
    Journal of Applied Physics 108, 053107 (2010)

  10. A novel technique for measurement of self generated magnetic fields and the plasma density in laser produced plasmas from the Faraday rotation using two color probes
    A. S. Joshi, P. A. Naik, S. Barnwal, Y.B.S.R. Prasad, and P.D.Gupta
    Optics Communication 283, 4713, (2010)

  11. Fourth-order harmonic generation during parametric four-wave mixing in the filaments in ambient air
    R.A. Ganeen, H. Singhal, P.A. Naik, J.A. Chakera, M. Kumar, and P.D. Gupta
    Phys. Rev. A 82, 043812 (2010)

  12. High-order harmonic generation in plasma plume of in situ laser-produced silver nanoparticles
    H. Singhal, R.A. Ganeev, P.A. Naik, J.A. Chakera, U. Chakravarty, H.S. Vora, A.K. Srivastava
    Phys. Rev. A 82, 043821 (2010)

  13. Generation of synchronized signal and pump pulses for an optical parametric chirped pulse amplification based on multi-terawatt Nd: glass laser syste
    M. Raghuramiah, R.K. Patidar, R.A. Joshi, P.A. Naik and P.D. Gupta
    Pramana Journal of Physics Vol. 75, No.5, 869 (2010)

  14. Development of Raman-shifted probe laser beam for plasma diagnosis using polaro-interferometer
    M.P. Kamath, A.P. Kulkarni, S. Jain, P.K. Tripathi, A.S. Joshi, P.A. Naik and P.D. Gupta
    Pramana Journal of Physics Vol. 75, No.5, 883 (2010)

  15. Ultrahigh Intensity Laser-Matter Interaction Studies at RRCAT, Indore
    P.D. Gupta, P.A. Naik, J.A. Chakera, R. Ganeev, H. Singhal, B.S. Rao, V. Arora, U. Chakravarty, and R.A. Khan
    AIP Conference proceedings, 1308, 51-62 (2010)

  16. Optimization of laser hole drilling process on thick gold spherical hohlraums for intense x-ray generation
    S.R. Patwa, S. Jain, P.K. Tripathi, A.S. Joshi, and P.D. Gupta
    Pramana Journal of Physics Vol. 75, No.6, 1203 (2010)

  17. Study of 2ω and 3/2 ω harmonics in ultrashort high-intensity laser plasma interaction
    V. Arora, P.A. Naik, J.A. Chakera, R.A. Khan, and P.D. Gupta
    Pramana Journal of Physics Vol. 75, No.6, 1175 (2010)

  18. Systematic studies of two-colour pump-induced high-order harmonic generation in plasma plumes
    R.A. Ganeev, H. Singhal, P.A. Naik, J.A. Chakera, H.S. Vora, R.A. Khan and P.D. Gupta
    Physical Review A 82, 053831 (2010)

  19. Energy distribution of highly charged ions escaping from a plasma via a low-voltage laser-induced discharge
    I.V. Romanov, A.A. Rupasov, A.S. Shikhanov, V.L. Paperny, A. Moorti, R.K. Bhat, P.A. Naik and P.D. Gupta
    J. Phys. D: Appl. Phys. 43, 465202 (2010)

  20. High order harmonic generation in carbon nanotube-containing plasma plumes
    R.A. Ganeev, P.A. Naik, H. Singhal, J.A. Chakera, M. Kumar, M.P. Joshi, A.K. Srivastava, and P .D. Gupta
    Phys. Rev. A. 83, 013820, (2011)

  21. Carbon aerogel plumes as an efficient medium for higher harmonic generation in the 40-90 nm range
    R.A. Ganeev, P.A. Naik, J.A. Chakera, H. Singhal, Nimai C. Pramanik, Poovakulathu A. Abraham, Narayanapanicker Rani Panicker, Mukund Kumar, and P .D. Gupta
    J. Opt. Soc. Am. B Vol 28, No.3, 360 (2011)

  22. X-ray enhancement in a nanohole target irradiated by intense ultrashort laser pulses
    U. Chakravarty, V. Arora, J.A. Chakera, P.A. Naik, H. Srivastava, P. Tiwari, A. Srivastava, and P.D. Gupta
    Journal of Applied Physics 109, 053301 (2011)

  23. Resonance enhancement of single even harmonic of laser radiation in tin-containing plasma using intensity variation of two-colour pump
    R.A. Ganeev, J.A. Chakera, P.A. Naik, H. Singhal, R.A. Khan, and P .D. Gupta
    J. Opt. Soc. Am. B Vol 28, No.5, 1055 (2011)

  24. Nano-ripple formation on different band-gap semiconductor surfaces using femtosecond pulses
    U. Chakravarty, R.A. Ganeev, P.A. Naik, J.A. Chakera, M. Babu, and P.D. Gupta
    Journal of Applied Physics 109, 0844347 (2011)

  25. Generation of intense soft x-rays from capillary discharge plasmas Y.B.S.R. Prasad, S. Nigam, K. Aneesh, S. Barnwal, P.K. Tripathi, P.A. Naik, C.P. Navathe, and P.D. Gupta Sadhna Vol. 36, Part 3, 349-355 (2011)

  26. Enhanced soft x-ray emission from carbon nanofibers irradiated with ultra-short laser pulses
    U. Chakravarty, P.A. Naik, B.S. Rao, V. Arora, H. Singhal, G.M. Bhalerao, A.K. Sinha, P. Tiwari, and P.D. Gupta
    Applied Physics B, 103, 571 (2011)

  27. Simple electro-optic technique to generate temporally flat-top laser pulses
    A.K. Sharma, R.K. Patidar, M. Raghuramiah, P.A. Naik and P.D. Gupta
    Optics Communication, 284, 4596 (2011)

  28. Chirped pulse interferometry for time resolved density and velocity measurements of laser produced plasmas
    Y.B.S.R. Prasad, S. Barnwal, P.A. Naik, J.A. Chakera, and P.D. Gupta
    Journal of Applied Physics, 110, 023305, (2011)

  29. Laser Applications in Indian Nuclear Power Programme
    P.D. Gupta
    Energy Procedia 7, 560, 2011

  30. Laser wake-field acceleration in pre-formed plasma channel created by pre-pulse pedestal of terawatt laser pulse
    B.S. Rao, J.A. Chakera, P.A. Naik, Mukund Kumar, and P.D. Gupta
    Physics of Plasmas 18, 093104 (2011)

  31. A diagnostic system for electrical faults in a high current discharge plasma setup
    S. Nigam, K. Aneesh, C.P. Navathe, and P.D. Gupta
    Review of Scientific Intruments 82, 024702 (2011)

  32. Conversion efficiency and spectral broadening of the K- x-ray line emitted from planar titanium targets irradiated with ultrashort laser pulses of high intensity
    V. Arora, H. Singhal, P.A. Naik and P.D. Gupta
    Journal of Applied Physics 110, 083305 (2011)

  33. Study of self-generated magnetic fields in laser produced plasmas using a three-channel polaro-interferometer
    Y.B.S.R. Prasad, S. Barnwal, P.A. Naik, M.P. Kamath, A.S. Joshi, S.R. Kumbhare, R.A. Rupasov, and P .D. Gupta
    Review of Scientific Instruments 82, 123506 (2011) Also in Virtual Journal of Ultrafast Science

  34. Use of Carbon-containing materials for efficient high-order harmonic generation of laser radiation
    R.A. Ganeev, P .A. Naik, H. Singhal, J.A. Chakera, M. Kumar, U. Chakravarty, and P .D. Gupta
    Optics Communications, 285, 2934, (2012)

  35. A comparative study of the ionic keV X-ray line emission from plasma produced by the femtosecond, picosecond and nanosecond duration laser pulses
    V. Arora, P.A. Naik, B.S. Rao, and P.D. Gupta
    Pramana – Journal of Physics, Vol. 78, No.2, 277 (2012)

  36. Three-dimensional simulation of laser-plasma based electron acceleration
    A. Upadhyay, K. Patel, B.S. Rao, P.A. Naik, and P.D. Gupta
    Pramana – Journal of Physics Vol. 78, No. 4, 613 (2012)

  37. A study on wavelength dependence and dynamic range of the quadratic response of commercial grade light emitting diodes
    A.K. Sharma, R.K. Patidar, M. Raghuramaiah, A.S. Joshi, P.A. Naik, and P.D. Gupta
    Optics Communication 285, 3300, (2012)

  38. Electric Field Enhancement at Multiple Densities in Laser Irradiated Nano-tube Plasma”
    Uday Chakravarthy, P.A. Naik, and P .D. Gupta
    Pramana – Journal of Physics, Vo. 79, No.3, 443 (2012)

  39. Enhancement of K emission through efficient hot electron generation in carbon nanotubes on intense laser pulse irradiation
    U. Chakravarty, V. Arora, P.A. Naik, J.A. Chakera, H. Srivastava, A. Srivastava, G.D. Varma, S.R. Kumbhare, and P .D. Gupta
    Journal of Applied Physics 112, 053301 (2012)

  40. Study of fast electron jet produced from interaction of intense laser beam with solid target at oblique incidence
    B.S. Rao, Vipul Arora, P.A. Naik, and P.D. Gupta
    Physics of Plasmas 19, 113118 (2012)

  41. Design and characterization of 50 kW solid-state RF amplifier
    Akhilesh Jain, P.R. Hannurkar, D.K. Sharma, A.K. Gupta, A.K. Tiwari, M. Lad, R. Kumar, P.D. Gupta and S.K. Pathak
    International Journal of Microwave and Wireless Technologies, 2012, 4(6), 595.

  42. Laser induced shock studies at RRCAT, Indore
    P.A. Naik, V. Arora, S. Bagchi, Y.B.S.R. Prasad, S. Barnwal, and P.D. Gupta
    Journal of Physics : Conference Series 377 (2012), 012052

  43. Modular 20 kW solid state RF amplifier for Indus-2 synchrotron radiation source
    Akilesh Jain, P .R. Hannurkar, D.K. Sharma, A.K. Gupta, A.K. Tiwari, M. Lad, R. Kumar, M.K. Badapanda, and P.D. Gupta
    Nuclear Instruments and Methods in Physics Research A 676, (2012), 74

  44. Restoratioin of absolute diffraction efficiency and blaze angle of carbon contaminated gratings by ultraviolet cleaning
    Mukund Kumar, Mohd. Hussain Modi, Himanshu Singhal, S. Sendhil Raja, Juzer Ali Chakera, Raj Kumar Gupta, Prasad Anant Naik, Gyanendra Singh Lodha, and Parshotam Dass Gupta
    Applied Optics, Vol. 52, No. 8, 1725 (2013)

  45. Simple and sensitive technique for alignment of the pinhole of a spatial filter of a high-energy, high-power laser system
    A.K. Sharma, R.K. Patidar, Deepak Daiya, A.S. Joshi, P.A. Naik and P.D. Gupta
    Applied Optics, Vol. 52, No. 12, 2546 (2013)

  46. Synchrotron-induced EDXRF determination of uranium and thorium in mixed uranium-thorium oxide pellets
    N.L. Mishra, M.K. Tiwari, S. Sanjay Kumar, Sangita Dhara, Ajit Kumar Singh, G.S. Lodha, S.K. Deb, P.D. Gupta, and S.K. Aggarwal
    X-ray Spectrom, Vol. 42, 4-7 (2013)

  47. Theoretical and experimental studies on single tiled grating pulse compressor
    Deepak Daiya, Avnish K. Sharma, A.S. Joshi, P.A. Naik and P.D. Gupta
    Optics Communications 309, 15-20 (2013)

  48. Theoretical studies on optimization of a broadband optical parametric amplifier for enhanced output stability
    A.K. Sharma, R.K. Patidar, P.A. Naik, and P .D. Gupta
    Optics Communications 309, 139-147 (2013)

  49. Dispersion-less spectrograph for absolute measurement of multi keV x-ray flux from high intensity laser produced plasma
    V. Arora, H.S. Vora, J.A. Chakera, M. Tayyab, P.A.Naik and P.D. Gupta
    Journal of Instrumentation, 8, P01010 (2013)

  50. Effect of chirp on self-modulation and laser wakefield electron acceleration in the regime of quasimonoenergetic electron beam generation
    B.S. Rao, A. Moorti, P.A. Naik, P.D. Gupta
    Physical Review Special Topics – Accelerators and Beams 16, 091301 (2013)

  51. A compact 10 kW, 476 MHz solid state radio frequency amplifier for pre-buncher cavity of free electron laser injector linear accelerator
    Praveen Mohania, Ashish Mahawar, Purushottam Shrivastava, and P.D. Gupta
    Review of Scientific Instruments, 84, 094703 (2013)

  52. Observation of neutrons in the interaction of high intensity laser pulses with solid targets
    M. Tayyab, J.A. Chakera, P.A.Naik, M. Kumar and P.D. Gupta
    EPJ Web of Conferences 59, 17008 (2013)

  53. High quality electron beam from laser wake-field acceleration in laser produced plasma plumes
    B.S. Rao, Anand Moorti, Ranjana Rathore, Juzer Ali Chakera, Prasad Anant Naik, and Parshotam Dass Gupta
    Applied Physics Letters 102, 231108 (2013)

  54. Enhanced water window x-ray emission from in-situ formed carbon clusters irradiated by intense ultra-short laser pulses
    Uday Chakravarty, B.S. Rao, V. Arora, A. Upadhyay, H. Singhal, P .A. Naik, J.A. Chakera, C. Mukherjee, and P.D. Gupta
    Applied Physics Letters 103, 054 107 (2013)

  55. Study of strain propagation in laser irradiated silicon crystal by time-resolved diffraction of K-α x-ray probe of different photon energies
    V. Arora, S. Bagchi, M. Gupta, J. A. Chakera, A. Gupta, P. A. Naik, P.Chaddah, and P.D. Gupta
    J. Appl. Physics 114, 023302 (Aug. 2013)

  56. Study of the spatial coherence of high order harmonic radiation generated from pre-formed plasma plumes
    M. Kumar, H. Singhal, J.A. Chakera, P.A. Naik, R.A. Khan, and P .D. Gupta
    J. Appl. Physics 114, 023302 (2013)

  57. Development of a two arm, high energy, high power laser for plasma research in India
    A.S. Joshi, M.P. Kamath, A.K. Sharma, M. Raghuramaiah, R.K. Patidar, M.S. Ansari, N. Sreedhar, R. Chandra, C.P. Navathe, P.A. Naik and P .D. Gupta
    Europ. Phys. J. : WoC. 59, 08001 (2013)

  58. Synchrotron -XRF study on compositional uniformity of uranium-thorium oxide pellets prepared by different processes.
    N.L. Mishra, M.K. Tiwari, Bal Govind Vats, S. Sanjay Kumar, Ajit Kumar Singh, G.S. Lodha, S.K. Deb, P.D. Gupta, and S.K. Aggarwal
    X-ray Spectrom, Vol. 43, Issue 3, 152-156, (2014)

  59. A comparative study of the inner-shell and the ionic line radiation from ultra-short laser-produced magnesium plasma
    Vipul Arora, Prasad A Naik, Uday Chakravarty, Himanshu Singhal, B.S. Rao, J.A. Chakera, M.P. Singh, and P.D. Gupta
    Physics Scripta, Vol. 89, No.11, (2014)

  60. Laser-matter interaction studies with a 10 TW (45 fs) Ti:sapphire laser
    P.A. Naik, B.S. Rao, V. Arora, M. Tayyab, H. Singhal, S. Bagchi, B. Ramakrishna, M. Kumar, T. Mandal, A. Moorti, J.A. Chakera, and P.D. Gupta
    ISRAPS Bulletin, Vol. 26, Issue No. 1 (2014)

  61. Measurement of the figure of merit of indigenously developed Nd-doped phosphate laser glass rods for use in high power lasers
    A.P. Kulkarni, S. Jain, M.P. Kamath, A.S. Joshi, P.A.Naik, P.D. Gupta, K. Annapurna, A.K. Mandal, B. Karmarkar, and R. Sen
    Pramana, Vol. 82, No.1, pp 159-163 (2014)

  62. Enhanced coherent XUV emission through high order harmonic generation from plasma plumes containing nano-particles [Theory]
    H. Singhal, P.A. Naik, M. Kumar, J.A. Chakera, and P.D. Gupta
    J. Appl. Phys. 115, 033104 (2014)

  63. Characterization of the 46.9 nm soft x-ray laser beam from a capillary discharge
    S. Barnwal, Y.B.S.R. Prasad, S. Nigam, K. Aneesh, M.L. Sharma, R.P. Kushwaha, P.K. Tripathi, P.A.Naik, J.A. Chakera, C.P. Navathe and P.D. Gupta
    Applied Physics B: Lasers & Optics, 2014

  64. Study of 1-8 keV K- x-ray emission from high intensity femtosecond laser produced plasma
    V. Arora, P.A. Naik, J.A. Chakera, S. Bagchi, M. Tayyab, and P.D. Gupta
    AIP Advances 4, 047106 (2014)

  65. Spectral analysis of K-shell X-ray emission of magnesium plasma produced by ultrashort high-intensity laser pulse irradiation.
    V. Arora, U. Chakravarty, Manoranjan P. Singh, J.A. Chakera, P.A. Naik and P.D. Gupta
    Pramana – Journal of Physics, Vol. 82, No. 2, 365, (2014)

  66. High quality stable electron beams from laser wakefield acceleration in high density plasma
    B.S. Rao, A. Moorti, R. Rathore, J.A. Chakera, P.A. Naik and P .D. Gupta
    Physical Review Special Topics – Accelerators and Beams 17, 011301, 2014

  67. Estimation of electron density and temperature of semiconductor surfaces excited by ultra-short laser pulses
    U. Chakravarty, P.A. Naik, J.A. Chakera, A. Upadhyay, P .D. Gupta
    Appl. Phys. A, 1457-1467, (2014)

  68. Role of target material in proton acceleration from thin foils irradiated by ultrashort laser pulses
    M. Tayyab, S. Bagchi, B. Ramakrishna, T. Mandal, R. Ramis, J.A. Chakera, P.A. Naik and P.D. Gupta
    Physical Review E 90 (2), 023103, 2014

  69. Study of fast electron transport in thin foil targets irradiated by ultrashort intense laser pulses
    T. Mandal, V. Arora, M. Tayyab, S. Baghchi, R. Rathore, B. Ramakrishna, C. Mukherjee, J.A. Chakera, P.A. Naik, and P.D. Gupta
    Applied Physics B. Laser & Optics, 281, (2015)

  70. Multi-MeV quasi-mono-energetic electron beam generation from interaction of ultra-intense laser pulse with solid target at grazing incidence
    B.S. Rao, A. Moorti, G. Pathak, J.A. Chakera, P.A. Naik, and P.D. Gupta
    Applied Physics B: Lasers and Optics, 149, (2015)

  71. Calculation of Self-Generated Magnetic Fields in Laser Produced Plasmas
    Y.B.S.R. Prasad, S. Barnwal, P.A. Naik, P.D. Gupta, E.A. Bolkhovitinov, and A.A. Rupasov
    Journal of Russian Laser Research, Vol. 36, Number 4, 395-402, July 2015

  72. Enhancement of conversion efficiency and spatial coherence of high order harmonics generated from pre-formed plasma plumes using aperture laser beam
    Mukund Kumar, U. Chakravarty, Ranjana Rathore, J.A. Chakera, P.A. Naik, and P.D. Gupta
    Journal of Physics B: Atomic, Molecular and Optical Physics, 10209, (2015)

  73. Filament control and collimation of laser accelerated MeV protons
    B. Ramakrishna, M. Tayyab, S. Bagchi, T. Mandal, Ajit Upadhyay, J.A. Chakera, P.A. Naik, Su-Ming Weng, M. Murakami, T. Cowan and P.D. Gupta
    Plasma Physics and Controlled Fusion 57 (12), 125013, (2015)

  74. Micrometer-sized negative-ion accelerator based on ultrashort laser pulse interaction with transparent solids
    S. Bagchi, M. Tayyab, B. Ramakrishna, A. Upadhyay, T. Mandal, J.A. Chakera, P.A. Naik and P.D. Gupta
    Physical Review E 92 (5), 051103 (2015)

  75. Study of shock wave propagation in soda lime glass using optical shadowgraphy
    Y.B.S.R. Prasad, S. Barnwal, P.A. Naik, Y. Yadav, R. Patidar, M.P. Kamath, A Upadhyay, S. Bagchi, A.Kumar, A.S.Joshi, and P.D. Gupta
    Accepted for publication in Pramana J. Phys. (Sept 2015)

  76. Enhancement of conversion efficiency and spatial coherence of high order harmonics generated from pre-formed plasma plumes using aperture laser beam
    Mukund Kumar, Uday Chakravarty, Ranjana Rathore, J.A. Chakera, P.A. Naik and P.D. Gupta
    Journal of Physics B: Atomic, Molecular and Optical Physics, 102096, (2016)

  77. Effect of the rate of rise in in discharge current on the output of a 46.9 nm soft x-ray laser based on capillary discharge.
    S. Barnwal, S. Nigam, K. Aneesh, Y.B.S.R. Prasad, P.A. Naik, C.P. Navathe, and P.D. Gupta
    Applied Physics B (2016) 122:169

  78. Tunable terahertz radiation generation by nonlinear photo-mixing of cosh-Gaussian pulses in corrugated magnetized plasma.
    P. Varshney, V. Sajal, A. Upadhyay, J. A. Chakera and R. Kumar
    Laser and Particle Beams, 35, 2017

  79. Quasi-monoenergetic electron beams from a few terawatt laser driven plasma acceleration using a Nitrogen gas jet
    B. S. Rao, A. Moorti, J. A. chakera, P. A. Naik and P. D. Gupta
    Plasma Phys. Control. Fus., 59, 2017

  80. Experimental and numerical study of ultra-short laser produced collimated Cu K-α X-ray sources
    R. Rathore, V. Arora, H. Singhal, T. Mandal, J. A. Chakera and P. A. Naik
    Laser and Particle Beams, 35, 2017

  81. Shape and collision frequency effect on heating of femtosecond laser pulse irradiated nano-structures
    Uday Chakravarty and Usha Chakaravarty
    Int. Res. J. of Eng. & Tech., 4, June 2017

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