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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 either 2 (d-boson) or 0 (s-boson). They correspond to a quintuplet and singlet, i.e. 6 states.

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}

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

History [ edit ]

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 [ edit ]

• Liquid drop model
• Nuclear shell model

References [ edit ]

• Arima, A.; Iachello, F. (1975-10-20). "Collective Nuclear States as Representations of a SU(6) Group". Physical Review Letters . 35 (16). American Physical Society (APS): 1069?1072. Bibcode : 1975PhRvL..35.1069A . doi : 10.1103/physrevlett.35.1069 . ISSN   0031-9007 .
• Iachello, F; Arima, A. (1987). The Interacting Boson Model . Cambridge: Cambridge University Press. ISBN   978-0-511-89551-7 . OCLC   776970502 .
• Arima, A; Iachello, F (1976). "Interacting boson model of collective states I. The vibrational limit". Annals of Physics . 99 (2). Elsevier BV: 253?317. Bibcode : 1976AnPhy..99..253A . doi : 10.1016/0003-4916(76)90097-x . ISSN   0003-4916 .
• Arima, A; Iachello, F (1978). "Interacting boson model of collective nuclear states II. The rotational limit". Annals of Physics . 111 (1). Elsevier BV: 201?238. Bibcode : 1978AnPhy.111..201A . doi : 10.1016/0003-4916(78)90228-2 . ISSN   0003-4916 .
• Scholten, O; Iachello, F; Arima, A (1978). "Interacting boson model of collective nuclear states III. The transition from SU(5) to SU(3)". Annals of Physics . 115 (2). Elsevier BV: 325?366. Bibcode : 1978AnPhy.115..325S . doi : 10.1016/0003-4916(78)90159-8 . ISSN   0003-4916 .
• Arima, A; Iachello, F (1979). "Interacting boson model of collective nuclear states IV. The O(6) limit". Annals of Physics . 123 (2). Elsevier BV: 468?492. Bibcode : 1979AnPhy.123..468A . doi : 10.1016/0003-4916(79)90347-6 . ISSN   0003-4916 .
• Arima, A; Iachello, F (1981). "The Interacting Boson Model" . Annual Review of Nuclear and Particle Science . 31 (1). Annual Reviews: 75?105. Bibcode : 1981ARNPS..31...75A . doi : 10.1146/annurev.ns.31.120181.000451 . ISSN   0163-8998 .
• Talmi, Igal (1993). Simple models of complex nuclei : the shell model and interacting boson model . Chur, Switzerland Langhorne, Pa., U.S.A: Harwood Academic Publishers. ISBN   978-3-7186-0550-7 . OCLC   25706648 .

Further reading [ edit ]

• Evolution of shapes in even?even nuclei using the standard interacting boson model

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