Physics:Interacting boson model

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The interacting boson model (IBM) is a model in nuclear physics in which nucleons (protons or neutrons) pair up, essentially acting as a single particle with boson properties, with integral spin of 0, 2 or 4.

It is sometimes known as the Interacting boson approximation (IBA).[1]:7

The IBM1/IBM-I model treats both types of nucleons the same and considers only pairs of nucleons coupled to total angular momentum 0 and 2, called respectively, s and d bosons.

The IBM2/IBM-II model treats protons and neutrons separately.

Both models are restricted to nuclei with even numbers of protons and neutrons.[1]:9

Regions of differently shaped nuclei, as predicted by the Interacting Boson Approximation[2]

The model can be used to predict vibrational and rotational modes of non-spherical nuclei.[2]

History

This model was invented by Akito Arima and Francesco Iachello in 1974.[1]:6 while working at the Kernfysisch Versneller Instituut(KVI) in Groningen, Netherlands. KVI is now property of Universitair Medisch Centrum Groningen (https://umcgresearch.org/).

See also

References

  1. 1.0 1.1 1.2 Walter Pfeifer (1998). An Introduction to the Interacting Boson Model of the Atomic Nucleus. ISBN 978-3-7281-2520-0. https://arxiv.org/ftp/nucl-th/papers/0209/0209039.pdf. 
  2. 2.0 2.1 Kratz, J. V. (5 September 2011). "The Impact of Superheavy Elements on the Chemical and Physical Sciences". 4th International Conference on the Chemistry and Physics of the Transactinide Elements. http://tan11.jinr.ru/pdf/06_Sep/S_1/02_Kratz.pdf. Retrieved 27 August 2013. 

Further reading