THE LICK OBSERVATORY IMAGE-DISSECTOR SCANNER
THE LICK OBSERVATORY IMAGE-DISSECTOR SCANNER
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DOI：
10.1086/129265
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发表时间：
1972-02
影响因子：
3.5
通讯作者：
L. Robinson;E. Wampler
中科院分区：
文献类型：
--
作者：
L. Robinson;E. Wampler
一种使用图像分解器扫描显像管输出屏幕的扫描仪已被证明是一种灵敏的线性探测器，可以探测微弱的天文光谱。图像管荧光粉屏幕充当短期存储元件，使系统接近理想的多通道光子计数器的性能。由单个光子产生的脉冲，由输出荧光粉发射并由图像分解器检测，触发放大鉴别器并在24位，4096字的循环存储器中计数。讨论了系统性能的各个方面，重点是线性度、动态范围、灵敏度、稳定性和散射光特性。
A scanner that uses an image dissector to scan the output screen of an image tube has proven to be a sensitive and linear detector for faint astronomical spectra. The image-tube phosphor screen acts as a short-term storage element and allows the system to approach the performance of an ideal multichannel photon counter. Pulses resulting from individual photons, emitted from the output phosphor and detected by the image dissector, trigger an amplifier-discriminator and are counted in a 24-bit, 4096-word circulating memory. Aspects of system performance are discussed, giving attention to linearity, dynamic range, sensitivity, stability, and scattered light properties.