Search for cosmic dark matter by means of planar inorganic scintillator

研制了一种用于宇宙暗物质探测的薄而广域的NaI(Tl)闪烁体。NaI(Tl)对宇宙暗物质的候选者具有很好的敏感性。闪烁体尺寸为0.5 cm×15 cm×15 cm。采集了薄边四端的闪烁光子，测试了能量分辨率和能量阈值。在60keV下，能量分辨率为20%。能量阈值低至3keV。这些表现适合于宇宙暗物质的探索。

A thin and wide area NaI(Tl) scintillator for cosmic dark matter search was developed. The NaI(Tl) has a good sensitivity for the candidates for cosmic dark matter. The dimension of the scintillator was 0.5cm×15cm×15cm. The scintillation photons were collected at the four ends of thinner edges.The energy resolution and energy threshold were tested. The energy resolution was 20% in full-width-half-maximum at 60keV. The energy threshold was as low as 3keV. These performances were suitable for cosmic dark matter search.