CAJ | 학술논문

真空紫外波段存在几个可用于研究电离层物理现象的重要光谱，其中135.6 nm的夜气辉是重要的探测谱段，通过对该波段辐射强度的探测可反演出电离层电子密度（T EC ）及F2层峰值电子密度。夜气辉发射线中，130.4 nm的发射线与135.6 nm光谱间隔很近，发射强度与135.6 nm强度相当，因此，要实现对135.6 nm夜气辉探测需要抑制130.4 nm气辉辐射。分别对0.5和1 mm厚的真空紫外级别的氟化钡晶体窗口透过率随温度变化特性进行研究，结果表明，氟化钡晶体的短波截止波长随温度的升高向长波方向偏移，在一定温度范围内，氟化钡晶体可以很好地抑制130.4 nm辐射，并在135.6 nm波段有较高的透过率。与国外相关文献所报道的通过加热SrF2晶体来抑制130.4 nm辐射的方式相比，利用氟化钡晶体作为短波截止滤光片，可以将130.4 nm的杂散光完全抑制，同时可以降低仪器功耗，对于电离层光学遥感探测有着重要的意义。
진공자외파단존재궤개가용우연구전리층물리현상적중요광보，기중135.6 nm적야기휘시중요적탐측보단，통과대해파단복사강도적탐측가반연출전리층전자밀도（T EC ）급F2층봉치전자밀도。야기휘발사선중，130.4 nm적발사선여135.6 nm광보간격흔근，발사강도여135.6 nm강도상당，인차，요실현대135.6 nm야기휘탐측수요억제130.4 nm기휘복사。분별대0.5화1 mm후적진공자외급별적불화패정체창구투과솔수온도변화특성진행연구，결과표명，불화패정체적단파절지파장수온도적승고향장파방향편이，재일정온도범위내，불화패정체가이흔호지억제130.4 nm복사，병재135.6 nm파단유교고적투과솔。여국외상관문헌소보도적통과가열SrF2정체래억제130.4 nm복사적방식상비，이용불화패정체작위단파절지려광편，가이장130.4 nm적잡산광완전억제，동시가이강저의기공모，대우전리층광학요감탐측유착중요적의의。
Two VUV-grade BaF2 windows with 0.5 mm-thick and 1 mm-thick respectively were selected to study the transmit-tance variety with the temperature .The results show that the cutoff wavelength of BaF2 crystals will shift towards the long wave with the increase in temperature .In a certain temperature range ,BaF2 crystals can depress 130 .4nm radiation well ,and also has a high transmittance at 135.6 nm .Compared with the reported method in which SrF2 crystals can be applied to suppress 130.4 nm stray light by heating ,BaF2 crystal can inhibit the 130.4 nm emission line completely ,and thus reduce the power consump-tion of the device at the same time .This indicates that BaF2 crystals can play an important role in the ionosphere optical remote sensing detection .