M. A. Punyasena

ORCID: 0000-0003-3963-4230
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Research Areas
  • Nuclear physics research studies
  • Solar-Powered Water Purification Methods
  • Traumatic Ocular and Foreign Body Injuries
  • Quantum Mechanics and Non-Hermitian Physics
  • High-Velocity Impact and Material Behavior
  • Atomic and Molecular Physics
  • Nuclear Physics and Applications
  • Forensic Fingerprint Detection Methods
  • Particle physics theoretical and experimental studies
  • Plant Water Relations and Carbon Dynamics
  • Solar and Space Plasma Dynamics
  • Structural Response to Dynamic Loads
  • Solar Thermal and Photovoltaic Systems
  • Quantum Information and Cryptography
  • Nonlinear Waves and Solitons
  • Geophysical Methods and Applications
  • Quantum Chromodynamics and Particle Interactions
  • Particle accelerators and beam dynamics
  • Solar Radiation and Photovoltaics
  • Nuclear reactor physics and engineering
  • Cold Atom Physics and Bose-Einstein Condensates
  • Astronomical and nuclear sciences
  • Aeolian processes and effects
  • Electrohydrodynamics and Fluid Dynamics
  • Quantum chaos and dynamical systems

University of Kelaniya
2003-2022

University of Ilorin
2013

University of Alberta
1997-1999

Using the asymptotic iteration method (AIM), we have obtained analytical approximations to ℓ-wave solutions of Schrödinger equation with Manning–Rosen potential. The energy eigenvalues and corresponding wavefunctions been explicitly. Three different Pekeris-type approximation schemes used deal centrifugal term. To show accuracy our results, calculated numerically for arbitrary quantum numbers n ℓ some diatomic molecules (HCl, CH, LiH, CO). It is found that results are in good agreement other...

10.1139/cjp-2012-0330 article EN Canadian Journal of Physics 2013-01-01

Cross sections have been measured up to 35 MeV excitation for the ${}^{76}$Se($n,p$)${}^{76}$As reaction at five laboratory angles between $0\ifmmode^\circ\else\textdegree\fi{}$ and $15\ifmmode^\circ\else\textdegree\fi{}$. The incident neutron energy was 198 MeV. distribution of Gamow-Teller (GT) strength energies less than 10 deduced by carrying out a multipole decomposition data. GT below 6 found be 0.9 units, in qualitative agreement with quasiparticle random-phase approximation...

10.1103/physrevc.55.2802 article EN Physical Review C 1997-06-01

${}^{12}\mathrm{C}(\stackrel{\ensuremath{\rightarrow}}{p},d{\ensuremath{\pi}}^{+}{)}^{11}\mathrm{B}$ has been investigated in the quasifree region at energies of 370 and 500 MeV. For each energy, measurements were made four angle combinations $({\ensuremath{\theta}}_{d,\mathrm{left}},{\ensuremath{\theta}}_{\ensuremath{\pi},\mathrm{right}})$ equal to (15\ifmmode^\circ\else\textdegree\fi{}, 30\ifmmode^\circ\else\textdegree\fi{}), 55\ifmmode^\circ\else\textdegree\fi{}),...

10.1103/physrevc.58.964 article EN Physical Review C 1998-08-01

Official journal of the Institute Physics - Sri Lanka. Full text articles are available. The also has a website at http://www.ip-sl.org/sljp/The new email for Editor is eic.ipsl@gmail.com.

10.4038/sljp.v13i1.4212 article EN cc-by Sri Lankan Journal of Physics 2012-07-19
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