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

Eiichi Sato; Yuichi Sato; Sohei Yoshida; Kunihiro Yoshioka; Hodaka Moriyama; Manabu Watanabe

doi:10.1117/12.2526546

9 September 2019 Intense nickel-K-photon irradiation from weakly-ionized linear plasma x-ray source with a reflector

Eiichi Sato, Yuichi Sato, Sohei Yoshida, Kunihiro Yoshioka, Hodaka Moriyama, Manabu Watanabe

Proceedings Volume 11114, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXI; 111141E (2019) https://doi.org/10.1117/12.2526546
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

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).

Conference Presentation

Citation Download Citation

Eiichi Sato, Yuichi Sato, Sohei Yoshida, Kunihiro Yoshioka, Hodaka Moriyama, and Manabu Watanabe "Intense nickel-K-photon irradiation from weakly-ionized linear plasma x-ray source with a reflector", Proc. SPIE 11114, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXI, 111141E (9 September 2019); https://doi.org/10.1117/12.2526546

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