Atomic and Molecular Physics

Atomic and molecular physics is the study of atoms and molecules and it is also the field of specialization in the physics. Atomic physicists study single ions and atoms while molecular physicists even investigates very small molecules that are in their gaseous form. Atomic physicists study isolated and separated ions as well as atoms along with the excitation and electron arrangements. Addition to this the electronic excitation states which are known from the atoms and molecules which are able to rotate and as well as to vibrate. These kind of rotations and vibrations are quantized so that, there are also discrete energy levels. Therefore, the smallest energy differences exist between the different rotational states and the pure rotational spectra are far from the infrared region in which the wavelength is about 30 - 150 µm of the electromagnetic spectrum. Vibrational spectra are near to the infrared which is about 1 - 5 µm and thus the spectra resulting from electronic transitions which are mostly the ultraviolet regions.

Atomic physics is the field of atomic and molecular physics that studies the atoms as an isolated system of electrons and also as the atomic nucleus. While molecular physics is the major study of the physical properties of molecules. The term atomic physics is mostly studied about the nuclear power and nuclear bombs. Atomic and molecular physics is an area of specialization in the field of physics, and the atomic physicists study isolated  separated ions and atoms along with electron arrangements and excitation. Molecular physicists only investigate about the molecules that have several atoms. They only look at the molecules chemical bonding such as nuclei and electrons when the molecule is in gas phase. Many experiments and theories also tackle the fundamental chemical physics processes and reactions that occur in the cold reaches of interstellar clouds in space. Atomic and molecular physics studies about the fundamental importance in an education in physics. And moreover the fundamentals of atomic and molecular structure is only on the basics for all that we know about matter of physics.

  • Atomic spectroscopy
  • Atomic optical science
  • Molecular optical sciences
  • Klein-Gordon theory
  • Dirac theory
  • Nuclear wave theory
  • Photo-ionization
  • Field quantization
  • Rotations and vibrations

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