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The (e,a) cross section in Zr has been measured at incident electron energies from 13.5 MeV to 66.5 MeV for a particles between 6.9 and 16.8 MeV. The (y,a) cross section was deduced from it assuming both E1 interaction and E2 interaction. The angular distribution of the (y,ao) cross section and an experiment using the bremsstrahlung plus electron beam make it clear that the E1 interaction is dominant over all the present energy range. The (y,a) cross section extracted by using E1 virtual photon spectra has a large bump above the excitation energy of 30 MeV in addition to a bump in the giant dipole resonance region. The (y,a()) cross section also has a bump at the giant dipole resonance which exhausts most of the (y,a) cross section in that region. The compound nucleus model was used successfully to explain the bump at the giant dipole resonance. The cross section above 30 MeV is discussed in terms of the pre-equilibrium a emission process combined with the quasi-deuteron model. NUCLEAR REACTIONS Zr(e, e), E~= 13.5 66.5 MeV; measured d(T(e, &)/dQ, deduced doh', &)/dQ and da(p, &p)/dg. Angular distributions; (p, &p) at g~= 17.5 MeV and (e, e) at E =40.0 MeV, 6 =45-135 . Experiment using electron plus bremsstrahlung at E = 60.0 MeV. Calculations, compound nucleus model, andpre-equilibrium exciton model combined with quasi-deuteron model.

More than 400nm broadband luminescence was obtained from 3 layered InAs/InP QDs array waveguides. InAs QDs were grown by Stranski‐Krastanov grown mode using selective MOVPE growth and double cap procedure. The selective MOVPE was performed using 16 stripe mask array with a wide mask at one side of the array. The heights of the QDs were controlled vertically by changing the first‐cap layer thickness during the double‐cap procedure. Furthermore, we have tried to control the emission energy of QDs by changing the Ga composition of GaxIn1‐xAs buffer layer under the QDs. By using these techniques, we have fabricated the broadband emission devices. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)