Spectral tomographic analysis of Bremsstrahlung X-rays generated in a laser-produced plasma. (17th October 2016)

• Record Type: Journal Article
• Authors: Rhee, Y.J.; Nam, S.M.; Peebles, J.; Sawada, H.; Wei, M.; Vaisseau, X.; Sasaki, T.; Giuffrida, L.; Hulin, S.; Vauzour, B.; Santos, J.J.; Batani, D.; McLean, H.S.; Patel, P.K.; Li, Y.T.; Yuan, D.W.; Zhang, K.; Zhong, J.Y.; Fu, C.B.; Hua, N.; Li, K.; Zhang, Y.; Zhu, J.Q.; Kim, I.J.; Jeon, J.H.; Jeong, T.M.; Choi, I.W.; Lee, H.W.; Sung, J.H.; Lee, S.K.; Nam, C.H.;
• Is Part Of: Laser and particle beams. Volume 34:Number 4(2016)
• Page Start: 645
• Page End: 654
• Publication Date: 2016-10-17
• Subjects: Bremsstrahlung X-ray, -- Filter stack spectrometer, -- Laser-produced plasma, -- Spectral reconstruction, -- X-ray spectrometer; Laser beams -- Periodicals; Particle beams -- Periodicals; 535.5
• DOI: 10.1017/S0263034616000604
• Languages: English
• ISSNs: 0263-0346

Abstract

Abstract: A new approach is proposed to analyze Bremsstrahlung X-rays that are emitted from laser-produced plasmas (LPP) and are measured by a stack type spectrometer. This new method is based on a spectral tomographic reconstruction concept with the variational principle for optimization, without referring to the electron energy distribution of a plasma. This approach is applied to the analysis of some experimental data obtained at a few major laser facilities to demonstrate the applicability of the method. Slope temperatures of X-rays from LPP are determined with a two-temperature model, showing different spectral characteristics of X-rays depending on laser properties used in the experiments.