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Title The effects of intermolecular interactions on the overall partition functions of elementary particle
Journal International journal of Engineering And Applied Science
Publisher Faculty of Engineering, Nnamdi Azikiwe University, Awka Nigeria.
Issue 1
ISSN 1119-8109
Pages 88 - 98
Subject Thermodynamics
Date of Publication 2014

AUTHOR(S) Ndukwe Okoro Agha, Sam Nna Omenyi

ABSTRACT

Elementary particles are atomic or sub-atomic particles that make up all kinds of matter. They are classified into two main groups, namely: bosons and fermions. In other words, bosons and fermions are found in all states of matter, viz: solids, liquids and gases. Fermions are constituents of matter while bosons are force carriers. Bosons are particles that transmit interactions or the constituents of radiation. In this work, the canonical ensemble partition functions were determined including the effects on intermolecular interactions. By using hydrogen, helium, bosons and fermions, the partition functions and the thermodynamic properties of internal energy, Helmholtz free energy and entropy were calculated. The partition functions of all systems considered, hydrogen, helium, bosons and fermions were shown to increase in the presence of intermolecular forces, the increase was more pronounced at increased temperatures in some cases. It was also determined that while the internal energies for fermions and bosons decreased, Helmholtz free energies for the particles decreased with temperature. It was found that, at ultra cold condition of below about 200 K, the entropy of bosons is 1.15x10-21 J/K while that of the fermions is 0.435x 10-21 J/K. This is understandable since the bosons condense at ultra cold conditions so their Entropy is lower.


Keywords: Intermolecular Interactions, Canonical Ensemble Partition Function, Elementary Particles, bosons, fermions




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