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The status of pionic single and double charge exchange reactions on nuclei is reviewed.
The present data base extending from very low pion energies up to 550 MeV reveals many …

We introduce a choice of reference wave functions that allows multichannel quantum defect
theory (MQDT) to describe ultracold collisions involving high-partial-wave quantum numbers …

For use in applications such as pion photoproduction and inelastic exclusive pion scattering
studies, a first-plus-second-order pion-nucleus optical potential is constructed by fitting the …

An isospin-invariant optical-potential framework is used to make a coordinated analysis of
low-energy pion elastic and single-and double-charge-exchange scattering to isobaric …

The Krell–Ericson transformation provides a local potential that is exactly equivalent to the
nonlocal Kisslinger-type potential. The associated scattering wave functions are related by a …

Coherent control of interfering one-and two-photon processes has for decades been the
subject of research to achieve the redirection of photocurrent. The present study develops …

Pion-nucleus scattering has been analyzed using an equivalent local potential to calculate
the differential cross sections for pions elastically scattered from 12 C, 16 O, 28 Si, and 4 0, 4 …

Data are presented for pion double charge exchange on targets of Ca 44, Fe 56, Ni 58, Se
80, Zr 90, and Sn 118. These and earlier data are used to examine the mass dependence of …

The theory of heavy ion double charge exchange (DCE) reactions proceeding by effective
rank-2 isotensor interactions is presented. Virtual pion–nucleon charge exchange …