## Proceedings of the International School of Physics "Enrico Fermi.", Volume 23N. Zanichelli, 1963 - Nuclear physics |

### From inside the book

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Page 99

A very simple example is in the treatment of the absorption of dipole radiation,

where one separates the nuclear co-ordinates into the centre-of-mass co-

ordinate R and the internal co-ordinates \i = xi — R. The coupling with the

can be ...

A very simple example is in the treatment of the absorption of dipole radiation,

where one separates the nuclear co-ordinates into the centre-of-mass co-

ordinate R and the internal co-ordinates \i = xi — R. The coupling with the

**y**-**ray**can be ...

Page 129

Let us suppose that a

particle-hole line in the 9 - tte.dim.ti S./.F. - XXIH. following way:

Effect of a. COLLECTIVE MOTION AND THE APPLICATION OF MANY-BODY ...

Let us suppose that a

**y**-**ray**is absorbed at t -- 0. This then involves joining theparticle-hole line in the 9 - tte.dim.ti S./.F. - XXIH. following way:

**Y**-**ray**V: 'ig. 27. -Effect of a. COLLECTIVE MOTION AND THE APPLICATION OF MANY-BODY ...

Page 130

following way:

upwards in time, we see that the first process amounts to creation responds to

annihilation of a particle-hole pair already present in the ground state of the

nucleus.

following way:

**Y**-**ray**V: 'ig. 27. - Effect of a ground-state correlation. As we goupwards in time, we see that the first process amounts to creation responds to

annihilation of a particle-hole pair already present in the ground state of the

nucleus.

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### Contents

Lectures | 1 |

G E Brown Collective motion and the application of manybody | 99 |

T Ep icson The compound nucleus and the random phase approximation | 142 |

Copyright | |

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### Common terms and phrases

amplitude approximation assume calculated closed shells coefficients commutation compound configuration consider corresponding coupling cross-section define deformed describe determined diagonal dipole dipole strength discuss eigenfunctions eigenstate eigenvalues electron equation excitation energy expectation value experimental factor force gives Green's function ground Hamiltonian harmonic oscillator Hartree-Fock hermitian adjoint hole hyperfine-structure intrinsic irreducible representation isobaric spin isospin isotope shift large number lecture levels linear magnetic matrix elements Ml transitions Mottelson multipole neutron nuclear charge distribution nucleon nucleus number of particles obtained one-particle operator operator F optical potential orbitals orthogonal pair parameters particle-hole interaction perturbation theory Phys physical problem proton quadrupole qualitative quantum number quasi-particle random relation residual interaction resonant rotation rotation group scattering self-consistent shell-model shown single-particle solution spectrum spherical symmetry time-dependent tion total angular momentum two-body two-particle unperturbed variation vector vibrations wave function wave-functions width y-ray zero