Open AccessDynamic range of X-ray streak camera affected by space charge effect
Author(s) -
Yuan Yong-Teng,
Hao Yi-Dan,
Zili Zhao,
Hou Lifei,
Miao Wen-Yong
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.6963
Subject(s) - streak camera , streak , physics , range (aeronautics) , photocathode , electron , space charge , optics , computational physics , laser , materials science , nuclear physics , composite material
x ray streak camera is an important equipment for time resolved measurement in the field of inertial confinement fusion. Its dynamic range indicates the ability that effectively measuring the intensity of incidence x ray. The photoelectron pulse will be broaden in passing through the photocathode-to-mesh region because of space charge effect. This limits the dynamic range of the streak camera. This paper adopts a fluid model, making use of particle conservation, momentum conservation, and Poisson equations to deduce the widening of the electron pulse and derive the change in the electron density distribution. The results can be used to evaluate the dynamic range of the streak camera.