Yan Zhang

Date of Award


Degree Name

Master of Arts



First Advisor

Dr. Dean Halderson

Second Advisor

Dr. Alvin Rosenthal

Third Advisor

Dr. Michitoshi Soga

Access Setting

Masters Thesis-Open Access


The reaction H(γη)2H* is studied using the impulse approximation. A recent fit to the H(γη)2H* elementary amplitude is employed in the calculation. The n-p final state is described by Reid's soft core potentials. The calculation shows very different cross sections for the final isospin 0 and isospin 1 break-up channels. The S11 resonance is demonstrated to dominate the eta cross sections in the 740 MeV photon laboratory energy region. Fermi motion in the deuteron does not significantly spread the effect of the S11 . All these results demonstrate that the reaction H(γη)2H* may provide a signature for the isospin components of the S11 electromagnetic transition amplitude. Measurement of this reaction will complement the earlier 2H(γη)2H* data.

Included in

Nuclear Commons