Luis O. Silva

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L aser-accelerated proton sources are under active study because of their potential application to radiotherapy of cancerous tumours 1,2 , radiography 3 , generation of short-lived isotopes needed in positron emission tomography 4 , injectors for conventional accelerators 5 , and inertial confinement fusion 6. The goal of this research is to produce a(More)
For a two-parameter family of Jacobi matrices exhibiting first-order spectral phase transitions, we prove discreteness of the spectrum in the positive real axis when the parameters are in one of the transition boundaries. To this end we develop a method for obtaining uniform asymptotics, with respect to the spectral parameter, of the generalized(More)
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