## Proceedings of the International School of Physics "Enrico Fermi.", Volume 69N. Zanichelli, 1977 - Nuclear physics |

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Page 31

B . R . MOTTELSON Nordita - Blegdamsvej 17 , 2100 København Ø . The

elementary _

generalization of the idea of the normal

in the sense that ...

B . R . MOTTELSON Nordita - Blegdamsvej 17 , 2100 København Ø . The

elementary _

**modes**of excitation of a many - body system represent ageneralization of the idea of the normal

**modes**of vibration of a classical system ,in the sense that ...

Page 48

For

OY , ) , , of which the first is just the density oscillations considered previously .

The two

the ...

For

**modes**with natural parity there are the two possibilities | Fo Y , , ( 44 ) F « (OY , ) , , of which the first is just the density oscillations considered previously .

The two

**modes**( 44 ) are coupled by interactions that are linear in the spin , asthe ...

Page 260

isovector

the latter gives by far the largest contribution . The contribution from high -

frequency octupole vibrations can be estimated by using the model [ 1 ] which is ...

isovector

**modes**) other than the present 3 - state must be also included , thoughthe latter gives by far the largest contribution . The contribution from high -

frequency octupole vibrations can be estimated by using the model [ 1 ] which is ...

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### Contents

Rotational degrees of freedom Deformation and | 3 |

86 | 8 |

the framework of a course such as the present The topics selected by | 10 |

Copyright | |

41 other sections not shown

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### Common terms and phrases

addition angular momentum appears approximation associated backbending band calculated closed collective compared comparison components configurations consider contributions corresponding coupling cross-sections deformation density dependence describe determined discussed distribution effects electron equations estimate evidence example excitation energy expected experiment experimental expression fact factor field given gives ground Hamiltonian hole included increase indicate inertia interaction Lett levels limit mass matrix elements measured modes motion neutron Nucl nuclear nuclei nucleons observed obtained operator orbits oscillator pairing parameters particle particular peak Phys physical possible potential predictions present processes proton quadrupole reaction region relation relative resonance respect rotational rule scattering seen shape shell model shown in fig shows simple single single-particle space spectra spectrum strength strong structure surface symmetry theory tion transfer transition values vibrational wave functions