Paper
28 January 2019 Intense nickel-K-photon irradiation from weakly-ionized linear plasma x-ray source with a zinc reflector
Eiichi Sato, Yasuyuki Oda, Yuichi Sato, Hodaka Moriyama, Osahiko Hagiwara, Hiroshi Matsukiyo, Toshiyuki Enomoto, Manabu Watanabe, Shinya Kusachi
Author Affiliations +
Proceedings Volume 11051, 32nd International Congress on High-Speed Imaging and Photonics; 110510G (2019) https://doi.org/10.1117/12.2524627
Event: International Conference on High-Speed Imaging and Photonics 2018, 2018, Enschede, The Netherlands
Abstract
The linear-plasma flash X-ray generator consists of a high-voltage power supply, a 200-nF high-voltage condenser, a turbomolecular pump, a trigger-pulse generator, and a demountable flash X-ray tube. In the flash X-ray generator, the condenser is charged up to 50 kV by the power supply, and flash X-rays are then produced by the vacuum discharging. The X-ray tube is a demountable triode with a rod-shaped nickel (Ni) target, a zinc (Zn) reflector and a trigger electrode, and the turbomolecular pump evacuates air from the tube at a pressure of approximately 1 mPa. The Ni-target evaporation leads to the formation of weakly ionized linear plasma, consisting of Ni ions and electrons, around the target. In the plasma, K-series characteristic X-ray photons (K photons) are produced, and bremsstrahlung photons with energies beyond the Ni-K-edge energy are absorbed by the plasma and converted into Ni-K photons. Subsequently, Zn-K photons from the Zn reflector are absorbed by the linear Ni plasma and converted into Ni-K photons. Thus, intense Ni-K photons (rays) are irradiated from the plasma axial direction by K-ray amplification by spontaneous emission of radiation (KASER).
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Eiichi Sato, Yasuyuki Oda, Yuichi Sato, Hodaka Moriyama, Osahiko Hagiwara, Hiroshi Matsukiyo, Toshiyuki Enomoto, Manabu Watanabe, and Shinya Kusachi "Intense nickel-K-photon irradiation from weakly-ionized linear plasma x-ray source with a zinc reflector", Proc. SPIE 11051, 32nd International Congress on High-Speed Imaging and Photonics, 110510G (28 January 2019); https://doi.org/10.1117/12.2524627
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KEYWORDS
Photons

X-rays

Plasma

Reflectors

Zinc

Nickel

Radiography

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