A Study of the 7-Li(p,n)7-Be Excitation Function at Intermediate Energies Using Residual Activity

This work was supported by National Science Foundation Grants PHY 76-84033A01, PHY 78-22774, and Indiana Universit

A Study of the 7-Li(p,n) 7-Be Excitation Function at Intermediate Energies Using Residual Activity

Supported by the National Science Foundation and Indiana Universit

The Isospin Makeup of the Giant Resonances from (p,n) Reaction Studies at Intermediate Energies

This work was supported by National Science Foundation Grant PHY 75-00289 and Indiana Universit

Gamow-Teller Resonances Observed in 90,92,94-Zr(p,n) at 120 and 160 MeV

Supported by the National Science Foundation and Indiana Universit

General Features of the Gamow-Teller Resonances

This work was supported by the National Science Foundation Grant NSF PHY 78-22774 A02 & A03 and by Indiana Universit

Strong Spin-Flip Transitions in (p,n) Reactions

This work was supported by National Science Foundation Grant PHY 76-84033 and Indiana Universit

Energy Systematics of the Giant Gamow-Teller Resonance and a Charge-Exchange Dipole Spin-Flip Resonance

This work was supported by the National Science Foundation Grant NSF PHY 78-22774 A02 & A03 and by Indiana Universit

Determination of the Gamow-Teller Quenching Factor from Charge Exchange Reactions on 90Zr

Double differential cross sections between 0-12 degrees were measured for the 90Zr(n,p) reaction at 293 MeV over a wide excitation energy range of 0-70 MeV. A multipole decomposition technique was applied to the present data as well as the previously obtained 90Zr(p,n) data to extract the Gamow-Teller (GT) component from the continuum. The GT quenching factor Q was derived by using the obtained total GT strengths. The result is Q=0.88+/-0.06 not including an overall normalization uncertainty in the GT unit cross section of 16%.Comment: 11 papes, 4 figures, submitted to Physics Letters B (accepted), gzipped tar file, changed content

Mechanisms for reactions of α-particles on 28Si at Eα = 65 MeV leading to three-body final states

A kinematically complete measurement has been made of all charged particles produced by 65 MeV a-particles on Si. Singles, coincidence and projected energy spectra are presented. The following processes have been identified: (i) quasi-free projectile breakup; (ii) binary breakup due to the inelastic excitation of the projectile to an unbound excited state; (iii) charged particle decay of the residual nucleus following mass-transfer reactions; (iv) pickup processes to Li unbound states with the subsequent decay into a and either p, d or t; (v) coincident proton evaporation. The cross section for process (i) is at least one order of magnitude smaller than the corresponding process induced by 3He at the same beam velocity. It has been found that the selectivity for populating states in a final nucleus is almost independent of the reaction leading to that nucleus