نتایج جستجو برای: auger therapy
تعداد نتایج: 658328 فیلتر نتایج به سال:
The principal mechanisms of Auger recombination of nonequilibrium carriers in semiconductor heterostructures with quantum wells are investigated. It is shown for the first time that there exist three fundamentally different Auger recombination mechanisms of (i) thresholdless, (ii) quasi-threshold, and (iii) threshold types. The rate of the thresholdless Auger process depends on temperature only...
The absolute Auger rates, relative intensities and the angular anisotropy coefficients of Auger electrons have been calculated for the KLL Auger spectra of laser-excited sodium atoms. Where in closed-shell atoms the KLL Auger lines have to be isotropic this is no longer valid for certain Auger transitions in open-shell systems. To study the KLL Auger spectra of 3s → 3p excited sodium atoms we c...
Radioactive copper (II) (diacetyl-bis N4-methylthiosemicarbazone) (Cu-ATSM) isotopes were originally developed for the imaging of hypoxia in tumors. Because the decay of a (64)Cu atom is emitting not only positrons but also Auger electrons, this radionuclide has great potential as a theranostic agent. However, the success of (64)Cu-ATSM internal radiation therapy would depend on the contributio...
We have measured the M(2,3)VV Auger spectra of Cu(110) and studied the final state interaction following the Cu 3p core electron excitation. We have observed that the kinetic energy of the M(2,3)VV Auger electron shifts to an energy higher than that of the normal Auger electrons near the Cu 3p threshold, and it converges to the constant kinetic energy of the normal Auger electrons as the excita...
Recent experimental investigations on the reduction of internal quantum efficiency with increasing current density in (AlInGa)N quantum well structures show that Auger recombination is a significant contributor to the so-called "droop" phenomenon. Using photoluminescence (PL) test structures, we find Auger processes are responsible for at least 15 % of the measured efficiency droop. Furthermore...
Introduction: Now day Ionizing radiation has found increasing applications in cancer treatment. However, in the treatment different kinds and size of tumors especially metastatic and small size tumors, conventional methods of external radiation therapy are not common. In radionuclide therapy, the use of monoclonal antibodies has made it possible to achieve maximum dose to small size tumor and m...
All the different Auger decay paths of Argon 2p holes have been characterized using a time of flight spectrometer of the magnetic bottle type. All electrons (the photoelectron and up to three Auger electrons) are detected in coincidence and resolved in energy. Double Auger decay is shown to proceed either through a direct process or by intense cascade paths, implying highly excited autoionizing...
Auger photoelectron coincidence spectroscopy (APECS) confirms that a substantial part of the lowenergy tail of the L» VV Auger lines of the 3d transition metals is due to intrinsic initialand final-state shake-up/shake-off processes and not just secondary losses. Data were collected for the L» VV Auger lines of pure Cu, Co, and Ni. APECS enables a direct experimental measurement of the initial-...
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