Determination of the temperature of bremsstrahlung photon generated by ultraintense laser using various thickness attenuators

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3553496· OSTI ID:22075441

Hasegawa, Shuichi; Takashima, Ryuta; Todoriki, Masaru; Kikkawa, Satoshi; Soda, Keita ^[1]; Takano, Kei ^[2]; Oishi, Yuji; Nayuki, Takuya; Fujii, Takashi; Nemoto, Koshichi ^[3]

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1. Department of Systems Innovation and Department of Quantum Engineering and Systems Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)
2. Department of Energy Sciences, Tokyo Institute of Technology, 4259 Nagatsuda-cho Midori-ku, Yokohama, Kanagawa-ken 226-8502 (Japan)
3. Central Research Institute of Electric Power Industry, 2-6-1 Nagasaka, Yokosuka-shi, Kanagawa-ken 240-0196 (Japan)

We evaluate the simplified method using the Lambert-Beer law to measure the temperature of bremsstrahlung photon generated by an ultraintense laser. Analytical values are compared to the results of the Monte Carlo calculation of GEANT4 and they agreed very well on the condition of the appropriate distance between the attenuator and the detector. We performed the experiment to measure the temperature of bremsstrahlung x-ray emitted from a metal target irradiated by a Ti:sapphire laser with 76 mJ, 72 fs, 2.2 x 10{sup 18} W/cm{sup 2}. For a Cu target of 30 {mu}m thick, the photon temperature was reasonably determined to be 0.18 MeV, which is in good agreement with previous studies.

• OSTI ID: 22075441
• Journal Information: Review of Scientific Instruments, Vol. 82, Issue 3; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BREMSSTRAHLUNG
LAMBERT LAW
LASERS
METALS
MEV RANGE
MONTE CARLO METHOD
PHOTON TEMPERATURE
PHOTONS
SAPPHIRE
TEMPERATURE MEASUREMENT
X-RAY EMISSION ANALYSIS