skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Measurement of heating laser injection time to imploded core plasma by using x-ray framing camera

Abstract

A simultaneous measurement of imploded core plasma and injection time of heating laser is conducted by using an x-ray framing camera (XFC). The experiments are performed using Gekko XII laser system for implosion of the deuterated polystyrene (CD) plastic shell target and Peta Watt (PW) laser system for heating. The time of PW laser injection is observed as the bright zone in the XFC image. The measured x-ray intensity profiles fit the Gaussian profiles well. The calculations of microchannel plate by using dynode model explain these broadened temporal profiles qualitatively. The peak position of fitted x-ray intensity profile is almost in agreement with the time when the high energy x ray is observed by x-ray streak camera. Moreover, the peak position is delayed corresponding to the delayed setting of PW laser injection time. From these results, it is concluded that we can estimate the heating laser injection time with resolution of the order of 10 ps by using XFC.

Authors:
; ; ; ; ; ;  [1]
  1. Institute of Laser Engineering, Osaka University, Osaka 565-0871 (Japan)
Publication Date:
OSTI Identifier:
21266571
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 79; Journal Issue: 10; Conference: HTPD08: 17. topical conference on high-temperature plasma diagnostics, Albuquerque, NM (United States), 11-15 May 2008; Other Information: DOI: 10.1063/1.2968105; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; IMAGES; IMPLOSIONS; LASERS; MICROCHANNEL ELECTRON MULTIPLIERS; PEAKS; PLASMA; PLASMA DIAGNOSTICS; PLASMA HEATING; POLYSTYRENE; RESOLUTION; STREAK CAMERAS; X RADIATION; ZONES

Citation Formats

Koga, Mayuko, Fujiwara, Takashi, Sakaiya, Tatsuhiro, Lee, Myongdok, Shigemori, Keisuke, Shiraga, Hiroyuki, and Azechi, Hiroshi. Measurement of heating laser injection time to imploded core plasma by using x-ray framing camera. United States: N. p., 2008. Web. doi:10.1063/1.2968105.
Koga, Mayuko, Fujiwara, Takashi, Sakaiya, Tatsuhiro, Lee, Myongdok, Shigemori, Keisuke, Shiraga, Hiroyuki, & Azechi, Hiroshi. Measurement of heating laser injection time to imploded core plasma by using x-ray framing camera. United States. https://doi.org/10.1063/1.2968105
Koga, Mayuko, Fujiwara, Takashi, Sakaiya, Tatsuhiro, Lee, Myongdok, Shigemori, Keisuke, Shiraga, Hiroyuki, and Azechi, Hiroshi. Wed . "Measurement of heating laser injection time to imploded core plasma by using x-ray framing camera". United States. https://doi.org/10.1063/1.2968105.
@article{osti_21266571,
title = {Measurement of heating laser injection time to imploded core plasma by using x-ray framing camera},
author = {Koga, Mayuko and Fujiwara, Takashi and Sakaiya, Tatsuhiro and Lee, Myongdok and Shigemori, Keisuke and Shiraga, Hiroyuki and Azechi, Hiroshi},
abstractNote = {A simultaneous measurement of imploded core plasma and injection time of heating laser is conducted by using an x-ray framing camera (XFC). The experiments are performed using Gekko XII laser system for implosion of the deuterated polystyrene (CD) plastic shell target and Peta Watt (PW) laser system for heating. The time of PW laser injection is observed as the bright zone in the XFC image. The measured x-ray intensity profiles fit the Gaussian profiles well. The calculations of microchannel plate by using dynode model explain these broadened temporal profiles qualitatively. The peak position of fitted x-ray intensity profile is almost in agreement with the time when the high energy x ray is observed by x-ray streak camera. Moreover, the peak position is delayed corresponding to the delayed setting of PW laser injection time. From these results, it is concluded that we can estimate the heating laser injection time with resolution of the order of 10 ps by using XFC.},
doi = {10.1063/1.2968105},
url = {https://www.osti.gov/biblio/21266571}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 79,
place = {United States},
year = {2008},
month = {10}
}