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Teplofizika vysokikh temperatur, 2010, Volume 48, Issue 6, Pages 810–815
(Mi tvt864)
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This article is cited in 1 scientific paper (total in 1 paper)
Plasma Investigations
Radiograph X-ray source based on interaction of femtosecond laser pulse with solid-state targets in an air medium
S. A. Pikuzab, O. V. Chefonovab, S. V. Gasilovab, P. S. Komarovab, A. V. Ovchinnikovab, I. Yu. Skobelevab, S. I. Ashitkovab, M. B. Agranatab, A. Ya. Faenovab a Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region
b Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow
Abstract:
We study the charcteristics of X-ray radiation of a laser plasma generated in the interaction of a femtosecond pulse with solid targets in an air medium and conside the possibility of using it for radiography. We show that the mechanism for generating X-ray radiation in the interaction of short, powerful laser pulses with solid targets in a gas atmosphere is related to the generation of fast electrons in the gas breakdown region. We prove experimentally that under such conditions, even under relatively low laser radiation densities $<10^{15}$ W/cm$^2$, a copper target quite effectively emits photons with energies of up to $10$ keV. We measure the spectrum of such an X-ray source containing the expressed Cu $K_\alpha$ and Cu $K_\beta$ lines and moderate bremsstrahlung. We demonstrate that the source can be used to obtain micron-resolution absorption images of low-contrast objects in an air medium, and in the same way, open possibilities for studies of medical-biological objects in vivo.
Received: 13.05.2010
Citation:
S. A. Pikuz, O. V. Chefonov, S. V. Gasilov, P. S. Komarov, A. V. Ovchinnikov, I. Yu. Skobelev, S. I. Ashitkov, M. B. Agranat, A. Ya. Faenov, “Radiograph X-ray source based on interaction of femtosecond laser pulse with solid-state targets in an air medium”, TVT, 48:6 (2010), 810–815; High Temperature, 48:6 (2010), 772–776
Linking options:
https://www.mathnet.ru/eng/tvt864 https://www.mathnet.ru/eng/tvt/v48/i6/p810
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