用于国家点火装置射线照相的短持续时间背光照相针孔的研制。

Development of a short duration backlit pinhole for radiography on the National Ignition Facility.

作者信息

Huntington C M, Krauland C M, Kuranz C C, Drake R P, Park H-S, Kalantar D H, Maddox B R, Remington B A, Kline J

机构信息

Atmospheric, Oceanic, Space Science, University of Michigan, 2455 Hayward Rd., Ann Arbor, Michigan 48103, USA.

出版信息

Rev Sci Instrum. 2010 Oct;81(10):10E536. doi: 10.1063/1.3496984.

DOI:10.1063/1.3496984

PMID:21034063

Abstract

Experiments on the National Ignition Facility (NIF) will require bright, short duration, near-monochromatic x-ray backlighters for radiographic diagnosis of many high-energy density systems. This paper details a vanadium pinhole backlighter producing (1.8±0.5)×10(15) x-ray photons into 4π sr near the vanadium He-like characteristic x-ray energy of 5.18 keV. The x-ray yield was quantified from a set of Ross filters imaged to a calibrated image plate, with the Dante diagnostic used to confirm the quasimonochromatic nature of the spectrum produced. Additionally, an x-ray film image shows a source-limited image resolution of 26 μm from a 20 μm diameter pinhole.

摘要

在国家点火装置（NIF）上进行的实验将需要明亮、持续时间短、近单色的X射线背光源，用于对许多高能量密度系统进行射线照相诊断。本文详细介绍了一种钒针孔背光源，它在钒类氦特征X射线能量5.18keV附近向4π立体角发射(1.8±0.5)×10(15)个X射线光子。通过一组成像到校准成像板上的罗斯滤光片对X射线产额进行了量化，并用丹特诊断法来确认所产生光谱的准单色性质。此外，一张X射线胶片图像显示，直径20μm的针孔产生的源受限图像分辨率为26μm。