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

### From inside the book

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Page 31

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

elementary _ modes of excitation of a many - body system represent a

generalization of the idea of the normal modes of vibration of a classical system ,

in the

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

elementary _ modes of excitation of a many - body system represent a

generalization of the idea of the normal modes of vibration of a classical system ,

in the

**sense**that ...Page 159

... solution to the system which was started with the initial conditions of separation

. In that

momentum averages , will retain the values they had at separation for each

fragment .

... solution to the system which was started with the initial conditions of separation

. In that

**sense**all the other conserved quantities , like linear and angularmomentum averages , will retain the values they had at separation for each

fragment .

Page 163

In what

mechanical theory and how do we seek for quantum - mechanical information

from this approach ? Since we have an approximate many - body wave function

as a ...

In what

**sense**is this treatment to be taken to be a classical or quantum -mechanical theory and how do we seek for quantum - mechanical information

from this approach ? Since we have an approximate many - body wave function

as a ...

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### Contents

A BOHR Some aspects of rotational motion | 3 |

B R MOTTELSON Elementary excitations in the nucleus | 42 |

R BÉs and R A BROGLIA Nuclear superfluidity | 55 |

Copyright | |

28 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 considered 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 moments motion neutron Nucl nuclear nuclei nucleons observed obtained operator orbits oscillator pairing parameters particle particular peak Phys physical possible potential predictions present processes protons 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 structure surface symmetry theory tion transfer transition values vibrational wave functions