SPECTROSCOPY OF DEFECTS IN NEUTRON IRRADIATED AMMONO-THERMAL GaN BY COMBINING PHOTOIONIZATION, PHOTOLUMINESCENCE AND POSITRON ANNIHILATION TECHNIQUES

In this work, pulsed photoionization as well as photoluminescence and positron annihilation spectroscopy were combined to detect different species of defects. The GaN crystals, grown by the ammono-thermal method, doped with Mn as well as Mg impurities and irradiated with different fluences of reactor neutrons, were examined to clarify the role of the technological and radiation defects. The evolution of the prevailing photoactive centres was examined by pulsed photoionization spectroscopy. Positron annihilation spectroscopy was applied to reveal vacancy-type defects.Peer reviewe

Selling sucks: how to stop selling and start getting prospects to buy

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Selling sucks: how to stop selling and start getting prospects to buy!

xii, 163 hlm.: 22 c

Selling Sucks: how to stop selling and start getting prospects to buy

ready to join the ranks of the top sales pros? buy selling sucks.apply its lessons.then watch your result go thorough the roo