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利用自制的单光子计数装置,测定了氦、氪在α粒子激励下的发射光谱,在370.0~720.0um波长范围内,辨认出5条Hel,1条KrⅠ和6条KrⅡ的光谱线,并在α粒子激励下观察到氦的分子谱带。实验研究了谱线强度随气体压强的变化规律,对α粒子激励下氦、氪可能的激发机理进行了探讨。
The emission spectra of helium and krypton under α-particle excitation were measured by a self-made single-photon counting device. Five Hel, one KrI and six KrII spectral lines were identified in the wavelength range from 370.0 to 720.0um , And the helium molecular band was observed under the excitation of α particle. The variation of spectral line intensity with the gas pressure was experimentally studied, and the possible excitation mechanism of helium and krypton under α-particle excitation was discussed.