Looking for atomic energy level database

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Discussion Overview

The discussion focuses on finding a database for atomic energy level diagrams, specifically for the element Cadmium (Cd). Participants explore methods for calculating energy levels and seek assistance in identifying specific energy levels from computational results.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • One participant inquires about a database that provides energy level diagrams for atoms, mentioning the NIST Atomic database as insufficient for their needs.
  • Another participant suggests that energy levels can typically be calculated using quantum chemistry software like Gaussian, indicating that manual calculations may be challenging.
  • A participant reports using Gaussian to calculate atomic orbitals for Cadmium, noting the presence of 24 energy levels but expressing uncertainty about identifying specific levels such as 3s and 4d.
  • Another reply recommends checking the generated logfiles from Gaussian, suggesting they may contain information about the orbitals and their corresponding energy levels.

Areas of Agreement / Disagreement

Participants generally agree on the utility of quantum chemistry software for calculating energy levels, but there is no consensus on the identification of specific energy levels from the results obtained.

Contextual Notes

The discussion does not resolve the specific identification of energy levels from the Gaussian output, and there may be limitations in the available databases or software outputs that are not fully addressed.

einstein1921
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Hello,everyone! I want to know if there is database which can tell me the energy level diagram of atom. I have consulted NIST Atomic database,but I can't find energy level diagram. so anybody can help me ? I WANT to get the energy leverl diagram like hydrogen atom in modern books(potential energy is 0 at infinite) Thank you!
ps: I want to get the energy level diagram of Cd
I want to know the energy of 1s electron if we set infinite potential energy to zero!
 
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Usually it can be calculated using quantum chemistry softwares like Gaussian. Without software it is tough.
 
Kholdstare said:
Usually it can be calculated using quantum chemistry softwares like Gaussian. Without software it is tough.
Thank you for your reply! take Cd example, I calculate the atomic orbital with Gaussian! there are 24 energy level,but I don't know which energy level is 3s, which is 4d and so on! would you please to help! Thank you!
 

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einstein1921 said:
Thank you for your reply! take Cd example, I calculate the atomic orbital with Gaussian! there are 24 energy level,but I don't know which energy level is 3s, which is 4d and so on! would you please to help! Thank you!

Have you tried to read the generated logfiles? Those may contain information regarding orbitals and energy.
 

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