一、引言对于大多数应用者来说,紫外光谱区辐射的测量至今受地球大气吸收的限制。就地球大气内的观测而言,氧和氮的电离带使下限在约185毫微米,就地球外的测量而言,哈特利臭氧带使下限增到约280毫微米。由于有火箭和卫星装备的空间技术,无体物理学可能进入一个新的紫外光谱区,它包括除氦和氢的连续的强吸收(星际吸收)区以外的紫外区。真 I. INTRODUCTION For most applications, the measurement of the radiation in the ultraviolet spectral region has so far been limited by the absorption of the Earth’s atmosphere. For observations in the Earth’s atmosphere, the ionosphere of oxygen and nitrogen sets the lower limit to about 185 nm, while for the extraterrestrial measurements, the Hartley Ozone Strip increases the lower limit to about 280 nm. Due to the space technology of rockets and satellites, invisible physics may enter a new ultraviolet region that includes ultraviolet regions other than the continuous strong absorption (interstellar absorption) regions of helium and hydrogen. true