C
Chandika Amarasinghe
Researcher at University of Missouri
Publications - 15
Citations - 197
Chandika Amarasinghe is an academic researcher from University of Missouri. The author has contributed to research in topics: Beam (structure) & Excited state. The author has an hindex of 7, co-authored 14 publications receiving 141 citations. Previous affiliations of Chandika Amarasinghe include Lawrence Berkeley National Laboratory.
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Journal ArticleDOI
Finite slice analysis (FINA)-A general reconstruction method for velocity mapped and time-sliced ion imaging.
TL;DR: A new numerical method is developed that reconstructs the underlying central slice of the 3D particle distribution through the use of radial basis functions and has the further advantage that it neither requires nor enforces full cylindrical symmetry of the data.
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Intrabeam Scattering for Ultracold Collisions
TL;DR: A method to probe cold and ultracold chemistry in a single molecular beam by implementing a dual-slit chopper that can separately fix the velocities of the two species at the interaction region to establish the relative velocity is demonstrated.
Journal ArticleDOI
Finite slice analysis (FINA) of sliced and velocity mapped images on a Cartesian grid.
James O. F. Thompson,Chandika Amarasinghe,Casey D. Foley,N. Rombes,Zhi Gao,Sjoerd N. Vogels,S. Y. T. van de Meerakker,Arthur G. Suits +7 more
TL;DR: This work presents a variant of the finite slice analysis method in which the FinA approach is performed in a cylindrical coordinate system (Cartesian in the image plane) rather than a spherical polar coordinate system, and shows superior resolution for fine structure in the differential cross sections.
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State-to-state scattering of highly vibrationally excited NO at broadly tunable energies.
Chandika Amarasinghe,Hongwei Li,Chatura A. Perera,Matthieu Besemer,Junxiang Zuo,Changjian Xie,Changjian Xie,Ad van der Avoird,Gerrit C. Groenenboom,Hua Guo,Jacek Kłos,Arthur G. Suits +11 more
TL;DR: The use of stimulated emission pumping is described to prepare NO molecules in arbitrary single rotational and parity states of v = 10 for inelastic scattering studies, testing the theoretical gold standard in a regime not found in nature.
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Differential Cross Sections for State-to-State Collisions of NO( v = 10) in Near-Copropagating Beams.
Chandika Amarasinghe,Hongwei Li,Chatura A. Perera,Matthieu Besemer,Ad van der Avoird,Gerrit C. Groenenboom,Chengjian Xie,Hua Guo,Arthur G. Suits +8 more
TL;DR: State-to-state differential cross sections for rotationally inelastic collisions of vibrationally excited NO with Ar have been measured in a near-copropagating crossed beam experiment at collision energies of 530 and 30 cm-1.