Magnetic circular dichroism measurements of benzene in the 9-eV region with synchrotron radiation

摘要

The magnetic circular dichroism and absorption spectra of gaseous benzene were measured using the four meter normal incidence monochromator and the Aladdin storage ring at the Synchrotron Radiation Center, University of Wisconsin-Madison. This is an extension of benzene magnetic circular dichroism measurements to higher energies than was previously possible. The magnetic circular dichroism gives additional information about the electronic structure of benzene. An initial interpretation of the magnetic circular dichroism results are presented and compared to proposed assignments. Various methods for extending to higher energies circular dichroism and other measurements that need a source of intense variably polarized electromagnetic radiation are summarized. Plans for extension of measurements to higher energies are also described.