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Predicting atomic properties of superheavy element 121

Kuipers, Stefan (2018) Predicting atomic properties of superheavy element 121. Bachelor's Thesis, Physics.


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In the last 80 years, the heaviest element in the periodic table has changed from Uranium, element 92, to Oganesson, element 118. However, there may exist even more elements beyond that. This thesis attempts to predict the ionization potential and ground state of element 121, which has not been discovered yet. To predict the energy of element 121 and its lighter homologues with their ionized and double ionized version, the Coupled Cluster method was used in combination with the relativistic Dirac-Coulomb Hamiltonian. Due to relativistic effects, the ground state of element 121 is expected to be [E118]8s^28p_{1/2}2P_{1/2} unlike its lighter homologues, which have a ground state of the form ns^2(n−1)d_{3/2}2D_{3/2}. The predicted ionization potential for element 121 is 4.51977 electronvolt, while its second ionization potential is predicted to be 12.5102 electronvolt. Since the model used for the prediction is not perfect, this prediction could be 0.1 or 0.2 electronvolt off from the real value.

Item Type: Thesis (Bachelor's Thesis)
Supervisor name: Borschevsky, A.
Degree programme: Physics
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 20 Jul 2018
Last Modified: 23 Jul 2018 13:01

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