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

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Page 266

The lowest - order anharmonic terms in the octupole energy spectrum are the

phonon - phonon interactions , represented by the fourth - order diagrams [ 3 ] in

the particle - vibration coupling .

12 .

The lowest - order anharmonic terms in the octupole energy spectrum are the

phonon - phonon interactions , represented by the fourth - order diagrams [ 3 ] in

the particle - vibration coupling .

**Examples**of these diagrams are shown in fig .12 .

Page 310

For

section some measure of the intrinsic strength of the transition , such as a B ( EL )

reduced transition probability or a « deformation parameter » Bu , which ideally is

a ...

For

**example**, we are concerned with obtaining from an experimental cross -section some measure of the intrinsic strength of the transition , such as a B ( EL )

reduced transition probability or a « deformation parameter » Bu , which ideally is

a ...

Page 432

As an

27 Al and states of 26 Al as obtained with a 15 MeV ( He , * He ) experiment [ 44 ]

and a 35 MeV ( p , d ) experiment [ 45 ] . The detailed state - by - state features ...

As an

**example**, table II shows a comparison of spectroscopic factors connecting27 Al and states of 26 Al as obtained with a 15 MeV ( He , * He ) experiment [ 44 ]

and a 35 MeV ( p , d ) experiment [ 45 ] . The detailed state - by - state features ...

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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 | |

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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