Ebook: Spin Excitations in Nuclei

This volume contains the proceedings of the "International Conference on Spin Excitations in Nuclei" held in Telluride, Colo­ rado, March 25-27, 1982. The motivation for the conference was, in a large part due to the recent development of new variable energy accelerators which produce high quality beams of electrons, protons, and pions that are providing the first precise information on spin excitations in nuclei over a large range of spin and mass. In the past such data had been restricted primarily to light nuclei and were generally resolution limited. Perhaps, the most exciting new result has been the clear observation of the elusive spin-dipole strength (Gamow­ Teller and Ml) in medium and heavy mass nuclei through the use of the (p,n) and (p,p') reactions at or near zero degrees with 100-200 MeV incident protons. Energy dependence in the isovector parts of the nucleon-nucleon interaction make the 100-200 MeV energy region particularly appropriate for such studies. The clean data from (e,e'), ('IT,'IT'), (p,p'), and (p,n) on high spin "stretched" states which have particularly simple structure has also been quite impor­ tant. The recent results contain important new information on the nature of the spin dependent forces in nuclei. These in turn are inherently related to the properties of the nuclear mesonic field and the underlying quantum chromodynamics.

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Content:
Front Matter....Pages i-xii
Opening Remarks: Basic Quark Considerations....Pages 1-5
Shell Model Picture of Nuclear Magnetic Moments....Pages 7-26
Spin-Isospin Response Functions in Nuclei....Pages 27-46
The Search for M1 Strength....Pages 47-64
Charge Exchange Reactions and Spin Modes....Pages 65-89
Observation of M1 Strength in Medium-Heavy Nuclei via the (p,p?) Reaction....Pages 91-109
Nucleus as a Chiral Filter: The Role of the ? (1232)....Pages 111-130
Magnetic Moments Revisited....Pages 131-141
The Experimental Evidence for Gamow-Teller Quenching....Pages 143-160
Evidence for ?-h Components from Pion Reactions....Pages 161-172
Constraints on Pion Condensates and Precursors from Nuclear Spin-Isospin Excitations....Pages 173-192
Renormalization of Axial ? and Magnetic ? Transitions with ??=1 and the Related Giant Resonances....Pages 193-199
Lorentz-Lorenz Quenching for the Gamow-Teller Sum Rules....Pages 201-204
The Nucleon-Nucleon Interaction and Nucleon-Nucleus Scattering....Pages 205-231
Meson Exchange Models for Effective Interactions....Pages 233-248
Comments: ? Versus Core Polarization....Pages 249-252
Implications of Density Dependence in the Effective Interaction for the Excitation of Spin Modes....Pages 253-265
Models for Pion-Nucleus Reactions....Pages 267-289
Spin Excitations in Pion Inelastic Scattering....Pages 291-309
Spin Flip 1+ Excitations by Inelastic Hadron Scattering....Pages 311-321
Studies of Spin Excitations with Electromagnetic and Hadronic Probes....Pages 323-353
Spin Observables in Nucleon-Nucleus Scattering....Pages 355-369
Studies of Spin Excitations Using Polarized Protons....Pages 371-390
High-Spin States in the (p,n) Reaction....Pages 391-401
Background Calculations for (p,n)-Reactions at Intermediate Energies....Pages 403-414
Damping of Spin Resonances....Pages 415-425
Spin Modes in the Low-Energy (p,n) Reaction....Pages 427-436
Spin Flip 1+ Strength in N=28 Isotones by Proton Inelastic Scattering at 65 MeV....Pages 437-444
Dynamical Theory of Spin Excitations....Pages 445-474
Spin Excitations in 208Pb....Pages 475-494
Transverse Contributions to Natural Parity Excitations....Pages 495-505
Convection Current Contributions to Spin Excitations....Pages 507-522
Can We Learn About the Spin Flip Giant Dipole Resonances with Pions?....Pages 523-538
Future Possibilities for (n,p) Studies at Intermediate Energies....Pages 539-558
Isovector Spin States Oberved in Radiative Pion Capture in Flight and at Rest: Recent Results from SIN....Pages 559-577
0- to 0+ Beta Decay in A = 16....Pages 579-586
Gamow-Teller Strength Distributions in Astrophysics....Pages 587-603
Gamow-Teller Strength Functions and Neutrino Problems....Pages 605-626
Experimental Perspective....Pages 627-632
Unresolved Theoretical Problems....Pages 633-642
Back Matter....Pages 643-658

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Content:
Front Matter....Pages i-xii
Opening Remarks: Basic Quark Considerations....Pages 1-5
Shell Model Picture of Nuclear Magnetic Moments....Pages 7-26
Spin-Isospin Response Functions in Nuclei....Pages 27-46
The Search for M1 Strength....Pages 47-64
Charge Exchange Reactions and Spin Modes....Pages 65-89
Observation of M1 Strength in Medium-Heavy Nuclei via the (p,p?) Reaction....Pages 91-109
Nucleus as a Chiral Filter: The Role of the ? (1232)....Pages 111-130
Magnetic Moments Revisited....Pages 131-141
The Experimental Evidence for Gamow-Teller Quenching....Pages 143-160
Evidence for ?-h Components from Pion Reactions....Pages 161-172
Constraints on Pion Condensates and Precursors from Nuclear Spin-Isospin Excitations....Pages 173-192
Renormalization of Axial ? and Magnetic ? Transitions with ??=1 and the Related Giant Resonances....Pages 193-199
Lorentz-Lorenz Quenching for the Gamow-Teller Sum Rules....Pages 201-204
The Nucleon-Nucleon Interaction and Nucleon-Nucleus Scattering....Pages 205-231
Meson Exchange Models for Effective Interactions....Pages 233-248
Comments: ? Versus Core Polarization....Pages 249-252
Implications of Density Dependence in the Effective Interaction for the Excitation of Spin Modes....Pages 253-265
Models for Pion-Nucleus Reactions....Pages 267-289
Spin Excitations in Pion Inelastic Scattering....Pages 291-309
Spin Flip 1+ Excitations by Inelastic Hadron Scattering....Pages 311-321
Studies of Spin Excitations with Electromagnetic and Hadronic Probes....Pages 323-353
Spin Observables in Nucleon-Nucleus Scattering....Pages 355-369
Studies of Spin Excitations Using Polarized Protons....Pages 371-390
High-Spin States in the (p,n) Reaction....Pages 391-401
Background Calculations for (p,n)-Reactions at Intermediate Energies....Pages 403-414
Damping of Spin Resonances....Pages 415-425
Spin Modes in the Low-Energy (p,n) Reaction....Pages 427-436
Spin Flip 1+ Strength in N=28 Isotones by Proton Inelastic Scattering at 65 MeV....Pages 437-444
Dynamical Theory of Spin Excitations....Pages 445-474
Spin Excitations in 208Pb....Pages 475-494
Transverse Contributions to Natural Parity Excitations....Pages 495-505
Convection Current Contributions to Spin Excitations....Pages 507-522
Can We Learn About the Spin Flip Giant Dipole Resonances with Pions?....Pages 523-538
Future Possibilities for (n,p) Studies at Intermediate Energies....Pages 539-558
Isovector Spin States Oberved in Radiative Pion Capture in Flight and at Rest: Recent Results from SIN....Pages 559-577
0- to 0+ Beta Decay in A = 16....Pages 579-586
Gamow-Teller Strength Distributions in Astrophysics....Pages 587-603
Gamow-Teller Strength Functions and Neutrino Problems....Pages 605-626
Experimental Perspective....Pages 627-632
Unresolved Theoretical Problems....Pages 633-642
Back Matter....Pages 643-658
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