American Journal of Physics and Applications

Volume 12, Issue 4, August 2024

  • Research Article

    Thermal Vacuum Synthesis: Physical Processes in Nanomaterial Production

    Volodymyr Kutovyi*

    Issue: Volume 12, Issue 4, August 2024
    Pages: 69-77
    Received: 12 October 2024
    Accepted: 4 November 2024
    Published: 26 November 2024
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    Abstract: The thermovacuum process offers an efficient and cost-effective method for producing nanomaterials by ensuring the continuous flow of dispersed material inside a spiral heating element. This is achieved by introducing the material into the heating element's cavity along with air, forming a two-phase gas-solid particle system. The material moves upw... Show More
  • Research Article

    The Mechanism of Formation of the Vibrational-Rotational Spectrum of the HCL Molecule

    Gulshan Nurmurodova*, Gulomhon Murodov, Utkir Khujamov

    Issue: Volume 12, Issue 4, August 2024
    Pages: 78-87
    Received: 20 September 2024
    Accepted: 16 October 2024
    Published: 3 December 2024
    DOI: 10.11648/j.ajpa.20241204.12
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    Abstract: In this work, the harmonic and anharmonic vibrational frequencies of the HCl molecule have been determined by using the density functional theory method. Calculations have been performed at the B3LYP/6-311++G (3dp, 3df) levels of theory. Transitions between energy levels are analyzed in terms of wavenumber. The rotational constants of the HCl molec... Show More