A pulse stretcher providing a 5.2 keV quasi-continuous beam has been developed for use with a pulsed slow-positron beam generated by an electron linear accelerator operated with a repetition frequency of 50 Hz. Pulses of positrons, of width 1.2 µs, were trapped in a Penning–Malmberg trap and then gradually released downstream, stretching the pulse width to nearly 20 ms.

中文翻译：

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一种用于基于LINAC的脉冲慢正电子束的脉冲扩展器，可提供能量为5.2 keV的准连续束

已经开发了提供5.2 keV准连续光束的脉冲展宽器，以与由电子线性加速器产生的脉冲慢正电子束一起使用，该电子线性加速器以50 Hz的重复频率工作。宽度为1.2 µs的正电子脉冲被捕获在Penning–Malmberg阱中，然后逐渐释放到下游，从而将脉冲宽度扩展到将近20 ms。