位置灵敏Bragg探测器的研制

位置灵敏Bragg探测器的研制，是为实现戴光曦老师提出的设想：在Bragg探测器的内部实现对位置测量而进行的一项研究工作。这项工作的实现对中、低能重离子核反应完成对裂片的测量是很有意义的。本工作采用电阻串进行电荷分除来定位，这在近物所为第一次。试验中，同时测量位置，能量及电荷对~(252)C+源的α粒子可以达到：ΔE/E = 1.9%, ΔZ/Z = 1.6% ΔX好于9mm

Stability of Mo/Si multilayer structure used in Bragg-Fresnel optics

The thermal and chemical stabilities of Mo/Si multilayer structure used in Bragg-Fresnel optics were studied to get optimal technological parameters of pattern generation. Mo/Si multilayers were annealed at temperature ranging from 360 to 770 K, treated with acetone and 5 parts per thousand NaOH solution, and characterized by small-angle x-ray diffraction technique as well as x-ray photoelectron spectroscopy, and Olympus microscopy.