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

### From inside the book

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Page 48

At the present time , we are only beginning to gain some understanding of the

collective modes associated with spin - dependent

in eqs . ( 43 ) and ( 44 ) . We are in fact overwhelmed by questions which we

cannot ...

At the present time , we are only beginning to gain some understanding of the

collective modes associated with spin - dependent

**fields**like those written downin eqs . ( 43 ) and ( 44 ) . We are in fact overwhelmed by questions which we

cannot ...

Page 110

A

excitation play the role of the free

takes place through the particle - vibration coupling vertices [ 6 , 54 , 55 ) . This

theory ...

A

**field**theory can be formulated in which the nuclear elementary modes ofexcitation play the role of the free

**fields**and in which their mutual interweavingtakes place through the particle - vibration coupling vertices [ 6 , 54 , 55 ) . This

theory ...

Page 141

The answer to this question may be in the generalization to time - dependent

mean

goes as follows : the static mean -

is ...

The answer to this question may be in the generalization to time - dependent

mean

**fields**made long ago by DIRAC [ 6 ] . There is a line of argument whichgoes as follows : the static mean -

**field**approximation works because the densityis ...

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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