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Proceedings Paper

Intense nickel-K-photon irradiation from weakly-ionized linear plasma x-ray source with a reflector
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Paper Abstract

The linear-plasma flash X-ray generator consists of a high-voltage power supply, a 200-nF high-voltage condenser, a turbomolecular pump, 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 and a Ni reflector. 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, Ni-K photons from the Ni reflector easily penetrate the linear Ni plasma. Thus, intense Ni-K photons (rays) are irradiated from the plasma axial direction by K-ray amplification by spontaneous emission of radiation (KASER).

Paper Details

Date Published: 9 September 2019
PDF: 6 pages
Proc. SPIE 11114, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXI, 111141E (9 September 2019);
Show Author Affiliations
Eiichi Sato, Iwate Medical Univ. (Japan)
Yuichi Sato, Iwate Medical Univ. Hospital (Japan)
Sohei Yoshida, Iwate Medical Univ. (Japan)
Kunihiro Yoshioka, Iwate Medical Univ. (Japan)
Hodaka Moriyama, Toho Univ. Ohashi Medical Ctr. (Japan)
Manabu Watanabe, Toho Univ. Ohashi Medical Ctr. (Japan)


Published in SPIE Proceedings Vol. 11114:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXI
Ralph B. James; Arnold Burger; Stephen A. Payne, Editor(s)

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