Acta Phys. -Chim. Sin. ›› 1996, Vol. 12 ›› Issue (05): 400-405.doi: 10.3866/PKU.WHXB19960504

• ARTICLE • Previous Articles     Next Articles

Study on the Curium I Odd-Parity Energy Levels Using Pattern Recognition Techniques

Cao Xiao-Wei,Liu Hong-Lin,Chen Nian-Yi   

  1. Shanghai Institute of Metallurgy,Chinese Academy of Sciences,Shanghai 200050
  • Received:1995-09-18 Revised:1995-11-27 Published:1996-05-15
  • Contact: Liu Hong-Lin

Abstract:

A new pattern recognition technique PCA-BPN(principal component analysis-back propagation network) has been used to assign the unknown electronic configurations of odd-parity energy levels of the first spectrum of curium (Cm I ). The obtained results show that (1) most previous predictions given by KNN(K nearest neighbours) and CPN(counter propagation network) are further confirmed;(2) several energy levels, which could not be clearly assigned by KNN etc., are predicted to be in good agreement with the assignments of the CPN;(3) two energy levels which were wrongly predicted by the CPN are now corrected using the PCA-BPN and the new assignments are supported by the traditional pattern recognition technique, PCA-NLM(principal component analysis nonlinear mapping).

Key words: Cm I odd parity spectrum, Classification of energy levels, Pattern recognition, PCA-BP neural network, Nonlinear mapping