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

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Page 154

One could possibly look at the

initial state of the system the two colliding nuclei are in their ground states , their

rest frame wave functions are by convention real , and they carry only a common

...

One could possibly look at the

**distribution**of single - particle momenta . In theinitial state of the system the two colliding nuclei are in their ground states , their

rest frame wave functions are by convention real , and they carry only a common

...

Page 281

We shall see below that , because of approximate selection rules , a given

excitation mechanism may not be able to excite all the levels of the spectrum ( 2 )

equally strongly , so that the excitation strength is

way .

We shall see below that , because of approximate selection rules , a given

excitation mechanism may not be able to excite all the levels of the spectrum ( 2 )

equally strongly , so that the excitation strength is

**distributed**in a very restrictedway .

Page 298

The angular

L = 1 + 2 ( see fig . 13 ) ; we see that we expect the relative importance of L = 1

and L = 2 to vary strongly with angle . zEx ( MeV ) 22 20 - 30 28 26 24 18 16 14

12 ...

The angular

**distribution**of the whole peak is consistent with the expectations forL = 1 + 2 ( see fig . 13 ) ; we see that we expect the relative importance of L = 1

and L = 2 to vary strongly with angle . zEx ( MeV ) 22 20 - 30 28 26 24 18 16 14

12 ...

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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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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