We report our recent progress using a high-power, picosecond CO2 laser for Thomson scattering and ion acceleration experiments. These experiments capitalize on certain advantages of long-wavelength CO2 lasers, such as their high number of photons per energy unit and beneficial wavelength- scaling of the electrons' ponderomotive energy and critical plasma frequency. High X-ray fluxes produced in the interactions of the counter-propagating laser- and electron-beams for obtaining single-shot, high-contrast images of biological objects. The laser, focused on a hydrogen jet, generated a monoenergetic proton beam via the radiation-pressure mechanism. The energy of protons produced by this method scales linearly with the laser's intensity. We present a plan for scaling the process into the range of 100- MeV proton energy via upgrading the CO2 laser. This development will enable an advance to the laser-driven proton cancer therapy.
Pogorelsky, I., Babzien, M., Polyanskiy, M., Yakimenko, V., Dover, N., Palmer, C., et al. (2011). Lasers as particle accelerators in medicine: From laser-driven protons to imaging with Thomson sources. In 21st International Conference on Application of Accelerators in Research and Industry, CAARI 2010 (pp.386-390) [10.1063/1.3586126].
Lasers as particle accelerators in medicine: From laser-driven protons to imaging with Thomson sources
CARPINELLI, Massimo;
2011
Abstract
We report our recent progress using a high-power, picosecond CO2 laser for Thomson scattering and ion acceleration experiments. These experiments capitalize on certain advantages of long-wavelength CO2 lasers, such as their high number of photons per energy unit and beneficial wavelength- scaling of the electrons' ponderomotive energy and critical plasma frequency. High X-ray fluxes produced in the interactions of the counter-propagating laser- and electron-beams for obtaining single-shot, high-contrast images of biological objects. The laser, focused on a hydrogen jet, generated a monoenergetic proton beam via the radiation-pressure mechanism. The energy of protons produced by this method scales linearly with the laser's intensity. We present a plan for scaling the process into the range of 100- MeV proton energy via upgrading the CO2 laser. This development will enable an advance to the laser-driven proton cancer therapy.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.