- Tytuł:
- Advances in High Intensity e-Beam Diode Development for Flash X-Ray Radiography
- Autorzy:
-
Oliver, B.
Hahn, K.
Johnston, M.
Portillo, S. - Powiązania:
- https://bibliotekanauki.pl/articles/1807904.pdf
- Data publikacji:
- 2009-06
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
41.75.Fr
41.75.Ht
41.50.+h
52.59.Mv
87.59.B- - Opis:
- Recent experiments at Sandia National Laboratories have demonstrated an electron beam diode X-ray source capable of producing >350 rad at one meter with 1.7 mm FWHM X-ray source distribution, with a 50 ns pulse-width and X-ray photon endpoint energy spectrum in the 6-7 MeV range. The diode operates at current densities of ≈1 MA/$cm^{2}$. The intense electron beam rapidly ( ≈ 5 ns) heats the X-ray conversion anode/target, liberating material in the form of low density ion emission early in the pulse and high density plasma later. This environment gives rise to beam/plasma collective effects which dominate the diode and beam characteristics, affecting the radiation properties (dose and spot-size). A review of the diode operation, the measured source characteristics and the simulation methods and diagnostics used to guide its optimization is given.
- Źródło:
-
Acta Physica Polonica A; 2009, 115, 6; 1044-1046
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł