| 1. |
- Gagin, Anton, et al.
(författare)
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Eigen Energies and the Statistical Distributions of the Rovibrational Levels of the Bosonic van der Waals Argon Trimer
- 2009
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Ingår i: Journal of Physical Chemistry A. - : American Chemical Society (ACS). - 1089-5639 .- 1520-5215. ; 113:52, s. 14979-14986
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Tidskriftsartikel (refereegranskat)abstract
- The eigen energies and the statistical distributions of the rovibrational levels (J = 0-2) of the bosonic van der Waals argon trimer were calculated using a full angular momentum three-dimensional finite element method. The influence of interatomic potentials on the vibrational levels and statistical properties of the trimer was discussed.
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| 2. |
- Salci, Moses, 1977-
(författare)
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A Theoretical Study of Atomic Trimers in the Critical Stability Region
- 2006
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- When studying the structure formation and fragmentation of complex atomic and nuclear systems it is preferable to start with simple systems where all details can be explored. Some of the knowledge gained from studies of atomic dimers can be generalised to more complex systems. Adding a third atom to an atomic dimer gives a first chance to study how the binding between two atoms is affected by a third. Few-body physics is an intermediate area which helps us to understand some but not all phenomena in many-body physics.Very weakly bound, spatially very extended quantum systems with a wave function reaching far beyond the classical forbidden region and with low angular momentum are characterized as halo systems. These unusual quantum systems, first discovered in nuclear physics may also exist in systems of neutral atoms.Since the first clear theoretical prediction in 1977, of a halo system possessing an Efimov state, manifested in the excited state of the bosonic van der Waals helium trimer 42He3, small helium and different spin-polarised halo hydrogen clusters and their corresponding isotopologues have been intensively studied the last three decades.In the work presented here, the existence of the spin-polarized tritium trimer ground state, 31H3, is demonstrated, verifying earlier predictions, and the system's properties elucidated. Detailed analysis has found no found evidence for other bound states and shape resonances in this system. The properties of the halo helium trimers, 42He3 and 42He2-32He have been investigated. Earlier predictions concerning the ground state energies and structural properties of these systems are validated using our three-dimensional finite element method. In the last part of this work we present results on the bound states and structural properties of the van der Waals bosonic atomic trimers Ne3 and Ar3. We believe to be the first to find evidence of a possible shape resonance just above the three-body dissociation limit of the neon trimer.
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| 3. |
- Salci, Moses, et al.
(författare)
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A theoretical study of the rovibrational levels of the bosonic van der Waals neon trimer
- 2008
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Ingår i: Journal of Chemical Physics. - : AIP Publishing. - 0021-9606 .- 1089-7690. ; 129:13, s. 134304-
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Tidskriftsartikel (refereegranskat)abstract
- The eigenenergies and root mean square radii of the rovibrational levels (J=0-3) of the weakly bound bosonic van der Waals neon trimer were calculated using a full angular momentum three-dimensional finite element method. The differing results of three previous studies for zero angular momentum are discussed, explained, and compared with the results presented here.
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| 4. |
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| 5. |
- Salci, Moses, et al.
(författare)
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Finite element investigation of the ground states of the helium trimers 4He3 and 4He2–3He
- 2007
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Ingår i: International Journal of Quantum Chemistry. - : Wiley Periodicals. - 0020-7608 .- 1097-461X. ; 107:7, s. 464-468
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Tidskriftsartikel (refereegranskat)abstract
- A three-dimensional finite element method is applied to the ground states of the symmetric and asymmetric atomic helium trimers 4He3 and 4He2–3He. Three different He–He interaction potentials of hard-core nature were studied. Two extrapolation procedures based on the convergence properties of the finite element method are investigated.
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| 6. |
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| 7. |
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