- Email: [email protected]
High-resolution transverse sum rules for electrons scattered inelastically from light nuclei
Abstracts
of
Papers
to appear
in Future
Issues
Threshold Anomalies. PETER GRAVES-MORRIS, Department of Applied Mathematics and Theoretical Physics, Free School Lane, Cambridge, England. The characteristics of various threshold anomalies in cross-sections and phase shifts are investigated and categorized. The effects of including a particle of large real mass as a coupled channel are considered, and the usual resonant behavior of physical amplitudes is derived. Kf-Deuterium Scattering. R&MESH CHAND, Department of Physics, Wayne State University, Detroit, Michigan. In the multiple scattering formalism for KNN system, low-energy K+-d elastic and inelastic scattering cross sections, as functions of the I = 0, s-wave KN scattering length (Ye , and the K+-laboratory momentum k L , are calculated. Using the experimental values for the Z = 1, s-wave KN scattering parameters, al(O) = -0.29 F, TI - 0.5 F, we find that the limited experimental data on the K+-cl charge-exchange scattering can be explained by (Ye = =O.ll’_i:“,i F. It is also observed that, unlike the case for K+-p scattering, higher partial waves contribute significantly to the K+-d scattering for K+-laboratory momentum around 300 MeV/cycle or larger. High-Resolution Transverse Sum Rules for Electrons Scattered Inelastically W. CZYB, L. LE~NIAK, AND A. MAX.ECKI, Instytut Fizyki JBdrowej, Poland. A series of sum rules is proposed for inelastic electron scattering at taining contributions from transitions of a given multipolarity. This to study the form factors of the giant dipole resonance and the results the existing experimental data and the results of calculations based theory of the dipole vibrations in nuclei.
from Krakbw,
Light Nuclei. Bronowice,
0 = 180”, each conapproach is applied are compared with on the microscopic
Transverse Sum Rule for Electrons Scattered Inelastically with Large Momentum Transfers from Light Nuclei. W. CZYB, L. LE~NIAK, A. M.~~EcK~, Instytut Fizyki Jqdrowej, Krakbw, Bronowice, Poland. A sum rule for the cross sections of electrons inelastically scattered from nuclei is analyzed. This sum rule contains contributions only from the transverse electron-nucleus interactions only and is particularly suitable for analyzing the experiments of inelastic electron scattering at 0 = 180”. The sum rule is a function of the three-momentum transfer 9. A discussion of this sum rule for momentum transfers 0.5 f-1 5 p 5 2f-1 is presented. Strong dominance of the spin-current contribution seems to offer a vrey attractive possibility of measuring magnetic moments of nucleons bound in nuclei. The paper contains estimates of the short-range nucleon-nucleon correlation contributions to the sum rule. Theory of the Cnare Efect. HEIMO G. LATAL. Department of Physics, Illinois Institute of Technology, Chicago, Illinois The compression of magnetic fields to more than 2 MG by electrically imploded metal foils, recently demonstrated by E. C. Cnare, is investigated theoretically. The general features of this effect are worked out, and some modifications which may lead to still higher field-compression ratios are discussed. 176
of
Papers
to appear
in Future
Issues
Threshold Anomalies. PETER GRAVES-MORRIS, Department of Applied Mathematics and Theoretical Physics, Free School Lane, Cambridge, England. The characteristics of various threshold anomalies in cross-sections and phase shifts are investigated and categorized. The effects of including a particle of large real mass as a coupled channel are considered, and the usual resonant behavior of physical amplitudes is derived. Kf-Deuterium Scattering. R&MESH CHAND, Department of Physics, Wayne State University, Detroit, Michigan. In the multiple scattering formalism for KNN system, low-energy K+-d elastic and inelastic scattering cross sections, as functions of the I = 0, s-wave KN scattering length (Ye , and the K+-laboratory momentum k L , are calculated. Using the experimental values for the Z = 1, s-wave KN scattering parameters, al(O) = -0.29 F, TI - 0.5 F, we find that the limited experimental data on the K+-cl charge-exchange scattering can be explained by (Ye = =O.ll’_i:“,i F. It is also observed that, unlike the case for K+-p scattering, higher partial waves contribute significantly to the K+-d scattering for K+-laboratory momentum around 300 MeV/cycle or larger. High-Resolution Transverse Sum Rules for Electrons Scattered Inelastically W. CZYB, L. LE~NIAK, AND A. MAX.ECKI, Instytut Fizyki JBdrowej, Poland. A series of sum rules is proposed for inelastic electron scattering at taining contributions from transitions of a given multipolarity. This to study the form factors of the giant dipole resonance and the results the existing experimental data and the results of calculations based theory of the dipole vibrations in nuclei.
from Krakbw,
Light Nuclei. Bronowice,
0 = 180”, each conapproach is applied are compared with on the microscopic
Transverse Sum Rule for Electrons Scattered Inelastically with Large Momentum Transfers from Light Nuclei. W. CZYB, L. LE~NIAK, A. M.~~EcK~, Instytut Fizyki Jqdrowej, Krakbw, Bronowice, Poland. A sum rule for the cross sections of electrons inelastically scattered from nuclei is analyzed. This sum rule contains contributions only from the transverse electron-nucleus interactions only and is particularly suitable for analyzing the experiments of inelastic electron scattering at 0 = 180”. The sum rule is a function of the three-momentum transfer 9. A discussion of this sum rule for momentum transfers 0.5 f-1 5 p 5 2f-1 is presented. Strong dominance of the spin-current contribution seems to offer a vrey attractive possibility of measuring magnetic moments of nucleons bound in nuclei. The paper contains estimates of the short-range nucleon-nucleon correlation contributions to the sum rule. Theory of the Cnare Efect. HEIMO G. LATAL. Department of Physics, Illinois Institute of Technology, Chicago, Illinois The compression of magnetic fields to more than 2 MG by electrically imploded metal foils, recently demonstrated by E. C. Cnare, is investigated theoretically. The general features of this effect are worked out, and some modifications which may lead to still higher field-compression ratios are discussed. 176